Response
stringlengths 8
2k
| Instruction
stringlengths 18
2k
| Prompt
stringlengths 14
160
|
|---|---|---|
Short answer: 9000 is not a lot, you're good to go. However, I would advise you to write a benchmark to see for yourself.I checked node-schedule's source and sure enough, it delegates scheduling tosetTimeoutfor date-based tasks. This means that your jobs are scheduled using node.js internal event loop.This code is very efficient, as node.js is tailored to handle several thousands of requests simultaneously.Regardless of the number of pending jobs, node.js will only care about the next task and sleep until its date (unless an async I/O interrupts it), so scheduling a task is essentially O(1).
|
In this Node app I'm working on, it's possible for users to book appointments.
When an appointment is booked, the users will later get a reminder by mail X hours before the actual appointment.I'm thinking about using Node-schedule for this task.For each appointment: Set up a future Date, send the reminder mail once and the delete this particular scheduled jobBut... there might be ALOT of appointments booked when the app grows, and this means there will be ALOT of Node-schedule processes simultaneously sleeping and waiting to fire...On a regular day, lets pretend we have 180 appointments booked for the future per clients, and lets pretend the app right now has 50 clients. This gives us around 9000 scheduled tasks sleeping and waiting to fire.Question:Is this perfectly OK? ... or will all these simultaneously scheduled task be to much/many?
|
How many simultaneous scheduled Jobs can I have in Node
|
You need shell to runcdcommand. In your crontab defineshorbashas SHELL.SHELL=/bin/sh
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
MAILTO="[email protected]"
# m h dom mon dow command
41 15 * * * /usr/bin/python /home/atweb/Documents/opengrok/setup_and_restart.py > /home/atweb/Documents/opengrok/restart_log.txt 2&>1Or open shell as subprocess in python.
|
I have this crontab configuration setup and the following script.MAILTO="[email protected]"
41 15 * * * /usr/bin/python /home/atweb/Documents/opengrok/setup_and_restart.py > /home/atweb/Documents/opengrok/restart_log.txt 2&>1And the python script is as thisimport subprocess
import os
from time import gmtime, strftime
def main():
print(strftime("%a, %d %b %Y %X +0000", gmtime()))
print('Running opengrok index..')
subprocess.call(["cd", "/home/atweb/Documents/opengrok"])
subprocess.call(["./stop_website"])
print('Stopped website...')
subprocess.call(["./index_opengrok"])
print('finished indexing...')
subprocess.call(["./setup_opengrok"])
print('setup finished...')
subprocess.call(["./start_website"])
print('Finished opengrok index..')
if __name__ =='__main__':main()And this is the output logTue, 27 Aug 2013 22:41:01 +0000
Running opengrok index..For some reason the script has begun running but other parts of the script are not finished.
I am not sure if its OS fault or cron fault or python. The script by itself runs fine when I invoke it from command line.Does anyone know why is this happening?
|
crontab: python script being run but does not execute OS Commands
|
The main difference between the two methods in my opinion would be the level at which you want to schedule job. When usingcrontabyour jobs are scheduled by thecrondaemon that runs on the system.node-cronon the other hand is a pure JavaScript implementation of cron. So system is not responsible for running jobs but your V8 engine which executes it. Jobs will be run as long as your js application runs.So why would you use one or other ?That depends on the purpose of your job, where is it best tethered . If job is a maintenance job for system run it via crontab. If you want to run a function in node.js periodically use node-cron. If you want to run a bash script you would want to use crontab. So how you want to do it via system (bash) or JavaScript is upto you.
|
I'm building a tool where users can enter a number of items they are interested in. Every 24 hours I want to run a script that checks certain JSON responses from external sources for these topics.My question is: why would you make a script and run it using crontab rather than making a module using thenode-cronplugin and include it in your app.js file. Or would you never do this?Basically want to go for best practice on this one.
|
Nodejs cron plugin vs running nodejs script from crontab
|
If the path contains spaces, then wrap it in quotes"C:\Path\to\php.exe" -f "C:\Path\to\file.php"the same way you do with the file to execute
|
i know there are a lot of posts about scheduled task and a fair few about executing PHP files but i have looked and tried to figure it out but still coming up short.I am still learning a lot of the ways of Windows server so please, if something needs to be pointed out let me know.So i set up a scheduled task that would execute at 1am and in all fairness this worked a charm, however i didn't realise that it would just open the file in notepad (Because that is the application that php files are associated with).So i did my research and found a lot people saying that i needed to pass the php.exe file in with it, these people were also providing i add this to the task:C:\Path\to\php.exe -f "C:\Path\to\file.php"So i put it in the action tab like so. please note that there is an error in the screen shot, i forgot to put \php.exe at the end of the sting.When i click OK i get asked thisAs you can see from the picture it only lists "C:\Program"I've tried moving things around and had nothing, i've tried wrapping the first part in quotes as well.So can someone tell me what i need to do or what i'm doing wrong here?Thanks for your time.
|
Executing PHP file with Windows server 2008 Scheduled Task
|
You will have to use two expressions; One for saturdays, one for all other days:0 0/20 * * * SUN-FRI command
0 0/20 0-9,14-23 * * SAT command
|
Is it possible to create a CronExpression with:
"fire every day every 20min but not on Saturday between 10:00 and 14:00"?Something like "0 0/20 * ? * MON-SAT" is clear, but it is not the same...
|
Cronexpression to exclude hours of a specific day
|
Use the full path to node:#!/usr/bin/env /home/mailmark/node/bin/node
|
I am attempting to execute this code in a cron job:a=`/home/mailmark/node/bin/forever list`; if [ "$a" == "No forever processes running" ]; then forever start /api.js; fiThe file in question, 'forever' contains this shebang:#!usr/bin/env nodeIt returns this response:/usr/bin/env: node: No such file or directoryBut I have this code on the last line of the .bashrc file:export PATH=/home/mailmark/node/bin:$PATHWhat should I do to make my cron work?
|
Condition supplied in cron job returns "No such file or directory"
|
Fromcronyou should be running the script asscript_name.pyand your script meets the following criteria:Executable bit is setThe script's hash-bang is set correctly eg.#!/usr/bin/env pythonit is accessible from thePATHe.g. place it in/usr/local/bin/or/opt/local/bin/(and they are accessible to your systemPATH.)If these conditions are met, you should be able to run it from anywhere on your local system asscript_name.py
|
I have a python script that I'd like to add to cron.The script has +x permission on it.How shall I add it to crontab? (say, I want it to run every minute).Important: when I navigate (using the shell) to the script's folder, I cannot run it using "./script_name.py"; it doesn't work. Yet, when I run it using "Python script_name.py", everything works.
|
Running a Python Script using Cron?
|
You can use forking. The startup script would load all the default configurations and initializations, then fork child processes to do the processing. It could then monitor the processes to see if they are still running.http://php.net/manual/en/function.pcntl-fork.php
|
I have a few scripts that need to run concurrently as separate processes. My plan is to have a cron job that executes multiple instances of these scripts at a set interval. Is this a good idea? What are the pros/cons to this approach? Are there any other options I need to consider?Bottomline: I'm trying to mimic multithreading. Any race conditions will be handled via code (e.g. setting statuses in DB, etc.). The scripts are supposed to do processing intensive tasks (e.g. creating thumbnails, etc.).
|
PHP Concurrency via Cron
|
I faced this problem as well when I deployed my application to production. It turns out that Bull.js doesn't automatically allow a redis connection over TLS, especially the fact that the production environment is already running over TLS. So what fixed it for me was settingtlstotrue, andenableTLSForSentinelModetofalsein the Redis options of my queue. Here's a sample code:const myQueue = new Queue('my_queue', YOUR_REDIS_URL, {
redis: { tls: true, enableTLSForSentinelMode: false },
...other queue options
})
|
I am using npm bull to add my queue job to handle about sending mail for my project. It runs no problems for a long time, but recently, it shows this error:Error while handling task collect-metrics: Reached the max retries per request limit (which is 10). Refer to "maxRetriesPerRequest" option for details.error logAnd I checked in redis-cli: key *, it didn't show any key.
The bull module support @bull-monitor/express to monitor the job, but since the error shows, I couldn't access the monitorbull admin panelhere is my code
|
Bull - Reached the max retries per request limit
|
If you run the scheduled job in spring the record must be as mentioned in first link:0 0 23 * *This will run the job at 23:00:00 every day
|
I want to schedule a method to run every 24 hours and with the settings I have it is executing every 24 minutes.I have referred below URL's which has different suggestionsLink 1suggests<second> <minute> <hour> <day-of-month> <month> <day-of-week> <year> <command>Link 2suggestsminute hour day(month) month day(week)Below are the cron settings put in the application.yml of my Spring Boot application.cron:
job:
expression: 0 0 23 * * ?Could someone help on what are the correct source of information and what can be the settings with the requirements at hand.
|
I want schedule a task for every 24 hours by using cron expression settings
|
Tilde~resolution is a bash feature. However your cronjob is not executed through Bash (You could do it explicitly if you want). However you can use$HOMEto refer to the user home independently of the shell.Refer toBash reference manualfor more info.
|
This question already has an answer here:Why is a tilde in a path not expanded in a shell script?(1 answer)Closed6 years ago.I had the following lines in my crontab:PY=/home/schemelab/install/miniconda/bin/python
ST=~/prg/surgetrader
# SURGE TRADER
00 * * * * cd $ST/src/ ; $PY download.py; $PY scan.py --buy 1And when it ran the error message in my email was:X-Cron-Env: <GT=~/prg/gridtrader>
X-Cron-Env: <AGT=~/prg/adsactly-gridtrader>
X-Cron-Env: <PY=/home/schemelab/install/miniconda/bin/python>
X-Cron-Env: <ST=~/prg/surgetrader>
X-Cron-Env: <SHELL=/bin/sh>
X-Cron-Env: <HOME=/home/schemelab>
X-Cron-Env: <PATH=/usr/bin:/bin>
X-Cron-Env: <LOGNAME=schemelab>
Date: Sun, 30 Jul 2017 09:50:02 -0400 (EDT)
/bin/sh: 1: cd: can't cd to ~/prg/surgetrader/src/
/home/schemelab/install/miniconda/bin/python: can't open file 'takeprofit.py': [Errno 2] No such file or directoryHowever, the path certainly does exist. I think that the tilde is not being expanded or something.
|
Why is a valid path with a tilde not expanding in this cron job? [duplicate]
|
You could use a locking mechanism, using something like redis. Basically it would work like this.script wakes up, first thing it does, is try and get the lock. If it gets the lock, then it moves forward, if something else has the lock, then exit. Do what the script does, and then release the lock.Since only one script can get the lock at a time, it will only allow the script to run once.It is important to remove the lock when the script is done, and also add a TTL to the lock so that if the script dies before releasing the lock, the lock will automatically open up after the TTL expires.Here is some docs on how to use Redis as a distributed lock.https://redis.io/topics/distlock
|
Currently, I have an app running on one server. There's a crontab set up so according to specified rules, there are tasks being run at certain times.Now, I'm thinking about migrating my app into docker container so I'm able to run multiple instances of my app independently. The thing I'm wondering how to do isHow to schedule tasks across multiple docker containers.Let's say I have a php command that every hour fetches new data from 3rd party app via API. Currently, I would use a cron to schedule it like this:0 */1 * * * php /some/path/index.php mycommand. There can be multiple similar commands launched at different frequencies.I cannot simply pack crontab into my docker image as the command would be launched 5 times when there are 5 containers running. I want to launch it only once independently on running containers count.What would be the ideal solution to achieve this?
|
What's the best approach to schedule tasks across docker cluster?
|
This is because the environment variables you have on the command line are not set when crond executes you code. The usual suspects arePATH,LD_LIBRARY_PATH, and aliases that are set when you login.You can see what crond does: usingcrontab -e* * * * * set > /tmp/setvalscreate the above entry. let it run for a while. Go back intocrontab -eand remove that new entry.Compare what is in/tmp/setvalswith what your shell gives you when you issue thesetcommand on the command line. You can then take steps to modify things for your cron job's environment.
|
My script uses mysql, tiny_tds, fileutils, and net/ftp. Running on ruby 1.9.3. It works perfectly fine when I run it from inside the folder.However, when I add it to cron tab, tiny_tds constantly fails. I dont know if any of the other gems fail as I can't get passed this error:require': no such file to load -- tiny_tds (LoadError)I tried executing it from the same shell that crontab would use, and I get that error.The entire script is just 1 file.I'm new to ruby so my knowledge is limited in setting up the environment the right way.In the head of the file I have#!/usr/bin/ruby
require "mysql"
require "fileutils";
require "tiny_tds"
require "net/ftp"In short, I get a list of Jobs from mysql, compare that against MsSQL, FTP files over and update mysql again when jobs are done.And I need to run this from cron.After researching for a bit, I tried to set set the gems as global, however, I think that may not have worked.Thanks in advance for any help!
|
Execute ruby script from cron
|
Because an error in node-cron module. I already send apull requestthat will fix it. You can change this lines in your local copy of this module.You also can use several function parameters to initialize cronJob instead of one object:var cronJob = require('cron').CronJob;
var cronJ = new cronJob("00 29 16 6 * *", function() {
console.log("Tick");
}, undefined, true, "America/Los_Angeles");
console.log(cronJ);
|
i have anode(v0.7.3-pre) server withnode-cron(0.3.2) andnode-time(0.8.2):var cronJob = require('cron').CronJob;
var cronJ = new cronJob({
cronTime: "00 29 16 6 * *",
onTick: function() {
console.log("Tick");
},
start:true,
timeZone: "America/Los_Angeles"
});
console.log(cronJ);it runs, but the Cron is allways working with the server time(UTC), and the returned cron is:{ _callbacks: [ [Function] ],
onComplete: undefined,
cronTime:
{ source: '00 29 16 6 * *',
zone: undefined,
second: { '0': true },
minute: { '29': true },
hour: { '16': true },
dayOfWeek:
...thezoneis set asundefined, am i missing something?
|
node-cron with timezones
|
L ("last") - has different meaning in each of the two fields in which it is allowed. For example, the value "L" in the day-of-month field means "the last day of the month" - day 31 for January, day 28 for February on non-leap years. If used in the day-of-week field by itself, it simply means "7" or "SAT". But if used in the day-of-week field after another value, it means "the last xxx day of the month" - for example "6L" means "the last friday of the month". When using the 'L' option, it is important not to specify lists, or ranges of values, as you'll get confusing results.You can use this to specify instead of specifying 30 in your corn job directly.http://www.quartz-scheduler.org/documentation/quartz-1.x/tutorials/crontriggerCheck for Special characters.Thanks.
|
I'm trying to write a simple cron expression for quartz scheduler. I want the job to run every month on day 30 at 3am.0 0 3 30 JAN-DEC ? *I wonder what happens for the month of February? Will the job run or not run?I'm not looking for a last day of month solution, I need the user to select the day of month when the job will run (ideally once for all months).
|
Quartz cron - what if the day of month does not exist?
|
You probably just have 2 versions installed, one of which is broken. If your cron is just directly callingpythoninstead of a specific path, yourPATHprobably contains/usr/binbefore/usr/local/bin(which is typical) - so in your cron, specify which python to use, or remove the existing one in/usr/binand symlink/path/to/good/pythonto/usr/bin/python.Edit: scratch that, just re-read and saw that it works fine from the command line.python-devis probably the way to go. Sorry!
|
I have python 2.7 installed on my linux box, and I'm trying to schedule a python script via crontab. The script works fine from the command line, however when running via cron I get:Traceback (most recent call last):
File "/usr/local/lib/python2.7/site.py", line 553, in <module>
main()
File "/usr/local/lib/python2.7/site.py", line 535, in main
known_paths = addusersitepackages(known_paths)
File "/usr/local/lib/python2.7/site.py", line 268, in addusersitepackages
user_site = getusersitepackages()
File "/usr/local/lib/python2.7/site.py", line 243, in getusersitepackages
user_base = getuserbase() # this will also set USER_BASE
File "/usr/local/lib/python2.7/site.py", line 233, in getuserbase
USER_BASE = get_config_var('userbase')
File "/usr/local/lib/python2.7/sysconfig.py", line 535, in get_config_var
return get_config_vars().get(name)
File "/usr/local/lib/python2.7/sysconfig.py", line 434, in get_config_vars
_init_posix(_CONFIG_VARS)
File "/usr/local/lib/python2.7/sysconfig.py", line 298, in _init_posix
raise IOError(msg)
IOError: invalid Python installation: unable to open /usr/include/python2.7/pyconfig.h (No such file or directory)I see that/usr/include/python2.7does't exist, but/usr/local/include/python2.7/does. Did I make a mistake while installing python?
|
Problem running python from crontab - "invalid Python installation"
|
Your cron is probably set up wrong.You can use wget or curl, which is effectively the same as running the cron "by hand". Something like this:5 * * * * wget http://example.com/cron.phpYou are probably using drupal.sh, which claims that you should use "http://default/cron.php as the URI." This will break the $base_url handling. The followingmightwork with drupal.sh.5 * * * * /path/to/drupal.sh --root /home/site/public_html/ http://example.com/cron.phpWhen using drush, you might have to supply the --uri argument:drush --uri=http://example.com cronYou could also just set the $base_url variable in settings.php (which is a perfectly valid way to do it, not a hack).
|
How to get $base_url to show the correct url for my Drupal site when I'm running a cron job? Do I have to set the global $base_url manually for that to happen? Do I have to run the cron job as a registered user?When I run mysite.com/cron.php by hand everything seems to work fine: $base_url is set to the correct url. However, when I run a similar command via cron or drush, $base_url is set to a generic "http://default".The funny thing is that when I run cron manually as a registered user from inside Drupal (using devel, for instance), $base_url aways points to the right url.Any suggestions?Thanks in advance,Leo
|
How to get Drupal's $base_url to work on a cron job?
|
Adding an init process to the container (init: trueindocker-compose.yml) solved the problem.EDIT: I read thishttps://blog.thesparktree.com/cron-in-dockerto understand the issues and solutions around running cron in Docker. From this article:"Finally, as you’ve been playing around, you may have noticed that it’s difficult to kill the container running cron. You may have had to use docker kill or docker-compose kill to terminate the container, rather than using ctrl + C or docker stop.Unfortunately, it seems like SIGINT is not always correctly handled by cron implementations when running in the foreground.After researching a couple of alternatives, the only solution that seemed to work was using a process supervisor (like tini or s6-overlay). Since tini was merged into Docker 1.13, technically, you can use it transparently by passing --init to your docker run command. In practice you often can’t because your cluster manager doesn’t support it."Since my original post and answer, I've migrated to Kubernetes, soinitin docker-compose.yml won't work. My container is based on Debian Buster, so I've now installedtiniin the Dockerfile, and changed the ENTRYPOINT to["/usr/bin/tini", "--", "/usr/local/bin/entrypoint.sh"](my entrypoint.sh finally doesexec cron -f)
|
I'm trying to understand why my Docker container does not stop gracefully and just times out. The container is runningcrond:FROM alpine:latest
ADD crontab /etc/crontabs/root
RUN chmod 0644 /etc/crontabs/root
CMD ["crond", "-f"]And thecrontabfile is:* * * * * echo 'Working'
# this empty line required by cronBuilt withdocker build . -t periodic:latestAnd run withdocker run --rm --name periodic periodic:latestThis is all good, but when I try todocker stop periodicfrom another terminal, it doesn't stop gracefully, the time out kicks in and is killed abruptly. It's likecrondisn't responding to the SIGTERM.crondis definitely PID 1/ # ps
PID USER TIME COMMAND
1 root 0:00 crond -f
6 root 0:00 ash
11 root 0:00 psHowever, if I do this:docker run -it --rm --name shell alpine:latest ashanddocker exec -it shell crond -fin another terminal, I can killcrondfrom the first shell with SIGTERM so I know it can be stopped with SIGTERM.Thanks for any help.
|
'docker stop' for crond times out
|
This is not real scheduling, but you can fake it in certain situations if you don't need the scheduling to be totally accurate, i.e. in your case run the job once a day:class WeatherJob < ApplicationJob
def perform
reschedule_job
do_work
end
def do_work
# ...
end
def reschedule_job
self.class.set(wait: 24.hours).perform_later
end
endenqueuing jobs to run in the future using ActiveJob should work with DelayedJob or Sidekiq, might not be supported in all active job backends?
|
I'm doing a weather API which will get, process and save data from another API. In order to get the daily updates (request URL info, get the JSON/XML data, construct my data and save it to my database) I think the most proper way is to use an ActiveJob.I want to schedule the job to run periodically. I would like something like UNIX cron or Spring @Scheduled annotation for Java.I have seen another questions on Stack Overflow(this one) about scheduling jobs but they use external gems like whenever. I have been looking for a backend that allows to execute the job in the Rails API (Backends), but it seems that none of the available allows scheduling a job.Is there anything on the Rails framework (version 5) that allows me to do what I'm trying to? Or I must use an external gem?Thank you so much.Edit
If is useful for anyone, here is the schema for the job:class ImportDailyDataJob < ApplicationJob
queue_as :default
def perform(*args)
# Do something later
end
private
def prepare_request
# return the request object
end
def request_data
# Get the data from external API.
end
def process_data
# Process the data
end
def save_processed_data
# Saves the data to the database
end
end
|
Schedule an ActiveJob in Rails
|
Use a priority queue (with the priority based on the next execution time) to hold the tasks to execute. When you're done executing a task, you sleep until the time for the task at the front of the queue. When a task comes due, you remove and execute it, then (if its recurring) compute the next time it needs to run, and insert it back into the priority queue based on its next run time.This way you have one sleep active at any given time. Insertions and removals have logarithmic complexity, so it remains efficient even if you have millions of tasks (e.g., inserting into a priority queue that has a million tasks should take about 20 comparisons in the worst case).There is one point that can be a little tricky: if the execution thread is waiting until a particular time to execute the item at the head of the queue, and you insert a new item that goes at the head of the queue, ahead of the item that was previously there, you need to wake up the thread so it can re-adjust its sleep time for the item that's now at the head of the queue.
|
Imagine you're building something like a monitoring service, which has thousands of tasks that need to be executed in given time interval, independent of each other. This could be individual servers that need to be checked, or backups that need to be verified, or just anything at all that could be scheduled to run at a given interval.You can't just schedule the tasks via cron though, because when a task is run it needs to determine when it's supposed to run the next time. For example:schedule server uptime check every 1 minutefirst time it's checked the server is down, schedule next check in 5 seconds5 seconds later the server is available again, check again in 5 seconds5 seconds later the server is still available, continue checking at 1 minute intervalA naive solution that came to mind is to simply have aworkerthat runs every second or so, checks all the pending jobs and executes the ones that need to be executed. But how would this work if the number of jobs is something like 100 000? It might take longer to check them all than it is the ticking interval of the worker, and the more tasks there will be, the higher the poll interval.Is there a better way to design a system like this? Are there any hidden challenges in implementing this, or any algorithms that deal with this sort of a problem?
|
What is a good way to design and build a task scheduling system with lots of recurring tasks?
|
There could be several things caused this. Here are ways to debug your crons:Run it manually from shell:php yourcron.phpAdd logging from your cron file, maybe by adding error_log('check if running'); to see if it is indeed running.As suggested above it could be permission issue too. Add execute permission to your cron:chmod 755 yourcron.php
|
I have cron jobs in cPanel that are scheduled every night. Yesterday, I noticed that these cron jobs haven't run since 2 days ago. I checked thecronlog in/var/log/cron, and it shows me errors when trying to access the file.Errors:Nov 6 11:25:01 web2 crond[17439]: (laptoplc) ERROR (failed to change user)
Nov 6 11:25:01 web2 crond[17447]: (projecto) ERROR (failed to change user)
Nov 6 11:25:01 web2 crond[17446]: (CRON) ERROR (setreuid failed): Resource temporarily unavailable
Nov 6 11:25:01 web2 crond[17446]: (laptoppa) ERROR (failed to change user)What could be the problem?
|
Cpanel does not run my cron jobs
|
CronMakeris a utility which helps you to build cron expressions. CronMaker usesQuartzopen source scheduler. Generated expressions are based on Quartz cron format.This expressions defines thestartof a task. It does not define itsduration(it belongs to the task).-used to specify ranges. For example, "10-12" in the hour field means "the hours 10, 11 and 12"CronTrigger Tutorial
|
Execute the job on Monday until Saturday from 7pm until 9am and the whole day for Sunday.I try to input multiple expressions of cron, but it's not working. Can anyone get me the solution for this?1. " * * 19-8 ? * MON,TUE,WED,THU,FRI,SAT "
2. " * * * ? * SUN "
|
How to write multiple cron expression
|
It seems like cron requires an empty line an the end of crontab. I accidentally left such line and viola! both tasks executed.
|
I'm trying to setup several cron jobs on VPS under centos/whm.
I've added to /var/spool/cron/root following lines:*/5 * * * * find /some-dir/* \( ! -iname ".ht*" \) -delete
*/10 * * * * find /some-other-dir/* \( ! -iname ".ht*" \) -deletebut only the first line executed ( for /some-dir/). If I swap lines - /some-other-dir/ executed, /some-dir/ - not. I've tried to put semicolons at the end of each line, to put spaces, tabs, change file encoding - nothing.How can I make cron process both tasks?here is the /var/log/cron output:Sep 18 11:05:01 host crond[3302]: (root) CMD (find /some-dir/* \( ! -iname ".ht*" \) -delete)
Sep 18 11:10:01 host crond[3303]: (root) RELOAD (/var/spool/cron/root)thanks!
|
Crontab executes only first line
|
I know this thread is very old, but here's how I handled a similar task.The "trick" is to take the custom PHP code you have created, and embed it into an article within your Joomla website.I did this by using the JUMI extension, that allows custom PHP code to be stored within the Joomla repository and embedded, as required, within an article.Then, create a CRON task that will activate the appropriate URL for the page containing the code you want to run.
|
I wrote a custom component in Joomla! that pulls in content from an XML feed and stores it in the Joomla database. I want the admin URL (/administrator/index?option=com_mycomp) to run via cron once every night to run the component. I can't figure out how to make this work, though, since the component is an administrator task and you have to be logged in to run it.How do I get by this? I tried including my user/pw in the url (http:admin:[email protected]/joomla/administrator....) but it doesn't work. Is there anyway other way to send login credentials, or any other way to do this?
|
how to run an admin task in joomla with a cron job?
|
If PyWikipediaBot is too heavy, try the Python modulemwclient.You can login, view a page’s current content, make your change and then view it in less than 10 lines(example).import mwclient
site = mwclient.Site('en.wikipedia.org')
site.login('Pfctdayelise','password')
page = site.Pages['User:Pfctdayelise/Test']
text = page.edit()
print text.encode('utf-8')
newtext = "\n\nTesting the write api without logging in.\n"
page.save(text+newtext,summary='testing write api')
|
Hi
I have a cron job which collects some statistics about a service. I need the cron job to update a media wiki page (append to the page) programmatically.
I am using python for the cron so what are my best options, are there any examples of mediawiki/python libraries or does Media wiki expose any HTTP/REST apis which I can use (may be through an extension).Thanks
|
Updating a media wiki article using Python?
|
Take a look athttp://rufus.rubyforge.org/rufus-scheduler/rufus-scheduler is a Ruby gem for scheduling pieces of code (jobs). It understands running a job AT a certain time, IN a certain time, EVERY x time or simply via a CRON statement.
rufus-scheduler is no replacement for cron/at since it runs inside of Ruby.
|
I would like to do a cron job every 10 minutes, but my system only does 1 hour. So I'm looking for a method to do this. I've seenTimerandsleepbut I'm not sure how to do this or even better yet a resource for achieving this.
|
How to make Ruby run some task every 10 minutes?
|
There are two ways to create a crontab -- per user or globally. For the global crontab (/etc/crontab) you specify the user, as per:# m h dom mon dow user command
17 * * * * root cd / && run-parts --report /etc/cron.hourlyFor user crontabs you don't, as per:aj@wherever:~$ crontab -l
0 * * * * /home/aj/bin/update-foobarTo get a python script running via #! notation, you just make the script executable (chmod 755 /root/test.py), and invoke it directly, something like:/root/test.pyIf you don't want to do that, you can run it via the python interpretor by hand, like:/usr/bin/python /root/test.pyThis assumes whichever user you're running as (ie the user in /etc/crontab, or the user you're running crontab -e as) has permission to see the python script -- /root might be inaccessible to regular users, eg.You can get a good idea of whether your script is being executed at all by adding:import time
time.sleep(20) # pause for 20 secondsand then checking with "top" or "ps aux" or "pstree" to see if python's actually running.
|
This is what my crontab file looks like:* * * * * root /usr/bin/python /root/test.py >> /root/classwatch.log 2>&1This is what my python script looks like:#!/usr/bin/python
print "hello"The cronjob creates the log file. But it is empty. I am also pretty certain that the python file is not being executed.Appreciate any help! I've been playing with it for past 4 hrs with no luck.
|
Going nuts with executing python script via crontab on debian!
|
This is very interesting. I found out it is the display manager setting a cookie. That one can be used to register processes to belong to a "session" which are managed by a daemon calledConsoleKit. That is to support fast user switching. My KDE4.2.1 system apparently supports it too.Readthisfedora wiki entry.So this environment variable is likeDBUS_SESSION_BUS_ADDRESSto give access to some entity (in the case ofXDG_SESSION_COOKIEa login-session managed by ConsoleKit). For example having that environment variable in place, you can ask the manager for your current session:$ dbus-send --print-reply --system --type=method_call \
--dest=org.freedesktop.ConsoleKit \
/org/freedesktop/ConsoleKit/Manager \
org.freedesktop.ConsoleKit.Manager.GetCurrentSession
method return sender=:1.1 -> dest=:1.34 reply_serial=2
object path "/org/freedesktop/ConsoleKit/Session1"
$The Manager also supports querying for the session some process belongs to$ [...].Manager.GetSessionForUnixProcess uint32:4494
method return sender=:1.1 -> dest=:1.42 reply_serial=2
object path "/org/freedesktop/ConsoleKit/Session1"However, it does not list or somehow contain variables that is related to somecronjob. However, documentation ofdbus-launchsays thatlibdbuswill automatically find the right DBUS bus address. For example, files are stored in/home/js/.dbus/session-busthat contain the correct current dbus session addresses.
|
I've been fighting with crontab recently because in Intrepid the gconftool uses a dbus backend, and that means that when used from crontab it doesn't work.To make it work I have had to export the relevant environment variables when I log in so that it finds the dbus session address when the cron comes to run.Out of curiosity I wondered what environment the croncouldsee and it turns out all I have isHOME,LOGNAME,PATH,SHELL,CWDand this new one on me,XDG_SESSION_COOKIE. This looks curious and several googlings have thrown up a number of bugs or other feature requests involving it but nothing that tells me what it does.My instinct is that this variable can be used to find all the stuff that I've had to export to the file that I source before the cron job runs.My questions, therefore, are a) can I? b) if so, how? and c) what (else) does it do?Thanks all
|
What is the XDG_SESSION_COOKIE environment variable for?
|
You can usehttps://www.npmjs.com/package/cronstruecRonstrue is a JavaScript library that parses a cron expression and outputs a human readable description of the cron schedule.cronstrue.toString("* * * * *");
> "Every minute"
cronstrue.toString("0 23 ? * MON-FRI");
> "At 11:00 PM, Monday through Friday"
cronstrue.toString("0 23 * * *", { verbose: true });
> "At 11:00 PM, every day"
cronstrue.toString("23 12 * * SUN#2");
> "At 12:23 PM, on the second Sunday of the month"
cronstrue.toString("23 14 * * SUN#2", { use24HourTimeFormat: true });
> "At 14:23, on the second Sunday of the month"
cronstrue.toString("* * * ? * 2-6/2", { dayOfWeekStartIndexZero: false });
> "Every second, every 2 days of the week, Monday through Friday"
cronstrue.toString("* * * 6-8 *", { monthStartIndexZero: true });
> "Every minute, July through September"
|
I've been looking all over the internet for an NPM package that could achieve this, but I haven't been able to find one.What I'm looking for is quite simple on the surface. A cron library that can translate a monthly cron job to human-readable text, while keeping it simple. So for example: if I put in0 0 14 * *, I want it to translate to "Monthly". Instead, this translates to "At 00:00 on day-of-month 14." which is an awkward string to display to users.More examples would be:0 8 * * *should translate to "Daily"0 0 10 * *should also translate to "Monthly"I want to stay away from making my own proprietary library if possible. Does anyone know if there is any JS package out there that meets my requirements?
|
Package to translate a cron to a "simpler" human readable format?
|
Essentially, in your CronJob spec, the template is the PodSpec and that's where you need to configure the 'Node Affinity'. For example,apiVersion: batch/v1beta1
kind: CronJob
metadata:
name: hello
spec:
schedule: "*/1 * * * *"
jobTemplate:
spec:
template:
spec:
containers:
- name: hello
image: busybox
args:
- /bin/sh
- -c
- date; echo Hello from the Kubernetes cluster
restartPolicy: OnFailure
nodeSelector: 👈
name: node3 👈This is assuming the label 🏷️ in your node isname=node3.
|
What is the default node affinity of a Cron job pod? How can we set it manually?I have a pod and have set its affinity to node3.However, the cron job container is still getting completed on node1 all the time when it triggers.
|
Affinity of job in kubernetes
|
This could be as easy as setting up a bash script withkubectlto send an email if you see a job that isFailedstate.while true; do if `kubectl get jobs myjob -o jsonpath='{.status.conditions[?(@.type=="Failed")].status}' | grep True`; then mail email@address -s jobfailed; else sleep 1 ; fi; doneor on newer K8s:while true; do kubectl wait --for=condition=failed job/myjob; mail@address -s jobfailed; doneHow to tell whether a Job is complete:Kubernetes - Tell when Job is CompleteYou can also setup something likePrometheuswithAlertmanagerin your Kubernetes cluster to monitor your Jobs.Some useful infohereandhere.
|
I have few cronjobs configured and running in Kubernetes. How to setup up cronjob email alerts for success or failure in Kubernetes.
|
Kubernetes cronjob email alerts
|
There's really nothingwrongwith running a process every minute ... except the usual pitfalls [which I include with ways to mitigate]. I do want to say that a minute is a really really long time for a modern computer. If you are short of cycles, a few extra system calls per minute is thewrongplace to look.pitfall #1 is that something goes "wrong" with the script and for some reason it doesn't exit. Symptom: box crashes as it can't create anymore processes and/or open a file descriptor, etc.How to solve: make the script grab an exclusive lock to a file. You could write your pid to a file, but that's hacky. If you can't grab the exclusive lock, a previous version is running, so you should just exit.Here's the PHP interface to flock():PHP flock()pitfall #2: it really should be a daemon.If something needs to be "done all the time", maybe it should really be "done all the time". You can use the file locking recipe to make sure your script stays up, or you can use something like monit to start it. But you can also just insure it stays up by using cron, and file locking.Pitfall #3: you convert to a daemon, but there's a memory leak and the thing just keeps expanding up like the girl in Willie Wonka on too many blueberries. Symptom: OOM error, swapping, etc. This is PHP after all.Solution: exit after 1000 [or some #] iterations, and then use cron and the file locking model to start a new version [or monit or equivalent].
|
I have a php script designed to check a certain folder for xml files and then import the information from each file to a MySQL database.I would like to set up a cronjob to run every minute so that anytime new files are added they will almost instantly be imported without me having to manually ssh in and run the script.I have an if statement which checks if files exist and only runs the code if they do, otherwise 'No files' is echoed.I would like to know if there are any risks to having this run constantly, will excessive resources be taken up? etc
|
Risks of running a cronjob every minute
|
The fine folks at Larachat (https://larachat.slack.com/) helped me out debug this issue.The problem was with my crontab. I was setting the crontab to execute the artisan scheduler as follows:*/1 * * * * php /path/to/artisan schedule:run(meaning executeevery 1st minuteof every hour every day.)When it should be:* * * * * php /path/to/artisan schedule:run(meaning executeevery minuteof every hour every day.)So, when I manually ran cron on a non-1st minute of every hour, it didn't run at all.
|
I've setup a command like this:protected function schedule(Schedule $schedule)
{
$schedule->command('feeds:fetch')->everyFiveMinutes();
}I've setup a cron job to runphp artisan schedule:runWhen I run that line on dev's terminal it runs the task OK. On Prod it returns "No scheduled commands are ready to run."Any way to troubleshoot this?
|
Laravel scheduler says "No scheduled commands are ready to run."
|
Solved, checked if the same trigger exists if yes, created a new trigger instance..with a different identity and run the code.boolean flag = scheduler.checkExists(trigger.getKey());
if (!flag)
{
scheduler.start();
scheduler.scheduleJob(job, trigger);
}
else
{
Trigger trigger1 =TriggerBuilder.newTrigger().withIdentity("schedulerJobTrigger1", "group1").withSchedule(schedBuilder).build();;
scheduler.start();
scheduler.scheduleJob(job, trigger1);
}
|
Referringdelete trigger in quartzI am getting the same issue:
Unable to store Trigger with name: 'schedulerJobTrigger' and group: 'group1', because one already exists with this identification.So before I think of unscheduling the Job I have a Query:Say I have 2 jobs.. details as follows:
Job1 : Start Time Today @ 17:30 and repeat twice after every 5 minutes
Job 2 :Start Time Today @ 17:37So if I unschedule a job(which supposedly removes the Trigger) after it executed at 17:30 and execute the Job2 then how will the scheduler run the Job1 which needs to be run @17:35 and 17:40 respectively(that's the repetitions)Thanks, Please help!Before trying the above scenario, even if I schedule a new job with a different schedule
@ scheduler.scheduleJob(job, trigger); it gives me the exception: Unable to store Trigger with name: 'schedulerJobTrigger' and group: 'group1', because one already exists with this identification.
|
Unable to store Trigger with name: 'trigger1' and group: 'group1', because one already exists with this identification
|
A simple solution is to remove the full path in the command and do a "cd /path" before executing the command. This way it will be launched in the same folder as the libraries. The code would look like this:#!/usr/bin/perl -w
use strict;
use warnings;
my($command, $name) = ("./my_server", "my_server");
if (`pidof $name`)
{
print "Process is running!\n";
}
else
{
`cd /full_path_to`;
`$command &`;
}
|
I wrote a simple script in perl to check if my server is running. If it is not, the script will launch it again. This is the script:#!/usr/bin/perl -w
use strict;
use warnings;
my($command, $name) = ("/full_path_to/my_server", "my_server");
if (`pidof $name`){
print "Process is running!\n";
}
else{
`$command &`;
}The scripts works perfectly when I manually execute it, but when I run it in crontab it fails to find the dinamic libraries used by the server, which are in the same folder.Crontab entry:*/5 * * * * /usr/bin/perl -w /full_path_to_script/autostartServerI guess it is a problem of the context where the application is being launched. Which is the smart way to solve this?
|
Periodically check if it is necessary to restart a process with Crontab and Perl
|
Because i'm using laravel, so need to use laravel artisan command to run the crontab in ubuntu. i referred to this site to create command:https://sonnguyen.ws/laravel-4-and-crontab/then put all the csv generation and email to fire function. it's done.app/commands/FirstCommand.phpphp artisan command:make FirstCommandchange protected $name = 'user:active';add generate csv and email in fire function. eg: echo "User activated"remove arguments in array in getArguments functionapp/start/artisan.phpArtisan::add(new FirstCommand);in terminal:crontab -ecommand in crontab:* * * * * /usr/bin/php /var/www/html/project/artisan user:active >> /var/www/html/project/public/cronoutput.txt
|
I am using crontab in ubuntu to send a csv to an email everyday, however it's not sending out. Why?btw, i'm using laravel 4.2UPDATED CRONTABcrontab:* * * * * /usr/bin/php /var/www/html/.../app/controllers/CronTask.php > /var/www/html/.../public/cronoutput.txtThe functions of generating csv and send the csv to email are in CronTask.php. I wanna see the log of the cron so the log is cronoutput.txt.What's the problem?
|
Crontab Not Working Ubuntu
|
Since I ran into the same problem I have builded a bean validator annotation for EJB timers.Feel free to use it. For all those who do not want to or can use bean validation, have a look at the regex in file CronField.java to validate your strings manually.The regular expressions are designed for "ScheduleExpression" not for "CronExpression" so my chosen name might seem a bit confusing.If you have improvements or optimization, please send me a pull request or a message.The source is available at thisrepository.Usage:
public class Month {@CheckCronField(CronField.MONTH)
public String expression;
...
}Some more examples are available in test folder in the same repository.
|
I have a text field where users can enter a cron expression (e.g.,0 */5 * * * *). I then split it and build ajavax.ejb.ScheduleExpression.Nowjavax.ejb.ScheduleExpressionaccepts any String for the different elements without validation. I can for examplescheduleExpression.minute("randomText");and is accepted. If then try to use the ScheduleExpression I obviously get errors (e.g., when I try to create a timer with it).I was beginning to write code to validate the input but the rules are not so short and trivial:http://docs.oracle.com/javaee/6/api/javax/ejb/ScheduleExpression.htmlIs there a simple way (in Java EE) or a library that does already does the job?
|
Validate a javax.ejb.ScheduleExpression
|
It seems its a problem with running gsettings under cron. Changing the os.system command to include DISPLAY=:0 GSETTINGS_BACKEND=dconf does the trick.os.system("DISPLAY=:0 GSETTINGS_BACKEND=dconf gsettings set org.gnome.desktop.background picture-uri '%s'" % (setup))
|
I've written the following simple python script which I intended to set as a cron job in Ubuntu 12.04 to change the wallpaper once an hour. The script runs and changes the wallpaper when I run it from a terminal perfectly. However when I set the cron job up I can see in syslog the cron job has run but the wallpaper doesnt change?#!/usr/bin/python
import os
import random
directory = os.getcwd() + '/'
files = os.listdir('.')
random.shuffle(files)
files.remove('.project')
files.remove('.pydevproject')
files.remove('background.py')
background = files[0]
setup = 'file://' + directory + background
print setup
os.system("gsettings set org.gnome.desktop.background picture-uri '%s'" % (setup))
|
Setting background with Python2.7 Crontab in Ubuntu 12.04
|
Section 14.12 of the Org manual will be a good entry point for batch execution.
Its online version can be found athttp://orgmode.org/manual/Batch-execution.html.
It introduces an example usingorg-babel-tangle, so you might want to replaceorg-babel-tanglewith your own function.
|
I'm new to org-mode and wrote a file with Babel in a few languages. I would like the file to each day, running the code in the org file, on a remote server - I don't think that's important.I wanted to do it with cron. I was trying something likecrontab emacs -batch -l my_file.org
|
Emacs: batch processing of org mode files via crontab
|
There’s no automatic way which Stripe can do this right now, unless you are eligible for the Checkout abandonment beta [0]. The only way to do that which I can think of is to cancel the PaymentIntent [1] if it is not in statussucceeded,canceledorprocessing[2] after a period of time, and trigger the inventory release on thepayment_intent.canceledevent [3].[0]https://stripe.com/docs/payments/checkout/abandoned-carts[1]https://stripe.com/docs/api/payment_intents/cancel[2]https://stripe.com/docs/api/payment_intents/object#payment_intent_object-status[3]https://stripe.com/docs/api/events/types#event_types-payment_intent.canceled
|
I am implementing ecommerce functionality. I have a situation where I want to restore product back into stock when stripe paymentIntent is not confirmed for a long time (say 10 minutes). To go into detail what I am doing is that when customer goes to checkout I lock stock of the products in cart. Then I ran a cronjob to identify carts which are lying unused for more than 30 minutes and restore stock back into inventory. This is fine, but there might be a case where user is paying and cart might be restored, inorder to tackle this, when payment is initiated I change cart state to inProgress so that cronjob is not restoring this cart. But if user is initiating payment and never completes it then cart will never be restored. So I am looking for a way in which paymentIntent will be expired and I can restore this cart in stripe webhooks. Any other alternative is appreciated.
|
How to expire stripe paymentIntent?
|
If you run following command on your linux host:cat /sys/devices/system/clocksource/clocksource0/current_clocksource
tscYou will see that your kernel is using (probably as mine) TSC what is Time Stamp Counter (https://en.wikipedia.org/wiki/Time_Stamp_Counter) - accurate time measurement based on CPU (here link to kernel parameterhttps://github.com/torvalds/linux/blob/master/Documentation/admin-guide/kernel-parameters.txt#L523). As comparison when you issue that command inside VM based on KVM you will see there kvm-clock which helps to deal with problems related to time and full OS virtualization.As docker container is light-weightvirtualizationisolation when you run same command in docker container you will see the same value - it means that container share time with host. It means also that containercannotchange time without proper privileges because it will change time of host and all other containers - that privilege is SYS_TIME (https://docs.docker.com/engine/reference/run/#runtime-privilege-and-linux-capabilities)Answering your questions:yesyeswill be the same as hostYes, at least there is high probability ;)
|
I have a couple of questions around time in a Docker container:Does a Docker container (e.g.ubuntu:16.04) have the same time as the host machine when it is started?Will the time be kept in sync, if I don't interfere?Will the time of the container be (1) kept in sync with the starting time or (2) kept in sync with the host or (3) be undefined or (4) something else, if I change the time on the host machine?If a CRON job within the continer should execute every full hour - is it guaranteed, that it will be executing?What I triedFor (1), it looks as if it is the case ($is host and#is container):$ docker run -it ubuntu:18.04 bash
# date --iso-8601=s -u
2018-09-11T18:47:04+00:00
$ date --iso-8601=s -u
2018-09-11T18:47:10+00:00For (3), I tried to change my local time withsudo date 080622432018, but I'm not sure if it took effect. I'm not sure if the command is wrong or if just some other system reset the time quickly to the correct one.
|
Time in a Docker container
|
There is no other way to achieve it using single crone expression but to specify multiple crone expressions for specific startDate and endDate.
There is a slight modification in second crone expression though (highlighted one)0 15-59 10 * * * (Every minute between 10:15 AM and 10:59 AM)0 * 11-16 * * * (Every minute, between 11:00 AM and 04:59 PM)0 0-35 17 * * * (Every minute between 05:00 PM and 05:35 PM)
|
I am trying to write an cron expression with a specific start time and end time everyday. i.e.
every minute from 10:15 to 17:35 everydayOne possible solution for this is writing 3 different cron expressions like this:0 15-59 10 * * *
0 * 11-17 * * *
0 0-35 17 * * *Is there any possible way to write this in one single cron expression ?
|
Cron expression with start and end time
|
About Cron:Cron is name of program which does scheduled tasks onnix systems. what Scheduled Tasks are in Windows, Cron does something similar for Linux at the conceptual level.Cron is one of the most useful tool in Linux or UNIX like operating systems. The cron service (daemon) runs in the background and constantly checks the /etc/crontab file, and /etc/cron./ directories. It also checks the /var/spool/cron/ directory.For Scheduling tasks on HerokuGood news is that on Heroku there is a thing called Scheduler which is an add-on for running jobs on your app at scheduled time intervals, much like cron in a traditional server environment. so you really don't need to fiddle/player with cron or gems like whenever. just use the Scheduler addon on Heroku.For More info see:https://devcenter.heroku.com/articles/scheduler
|
This is my first time scheduling a task and I am not sure of the best implementation (or the proper implementation).My Goal:I have a ruby on rails 4 app setup with twilio and deployed on Heroku. I want the app to automatically text all of my users once a week with a customized text message (which is written and created by information in the database).From research I have come down to the following Gems:WheneverandRufus-Scheduler.I believe that both these gems can get the Job done, but upon reading on the Rufus' docs: "please note: rufus-scheduler is not a cron replacement" I got stuck trying to understand if what I want is indeed a cron job or a "Rufus-Scheduler".I am left with the following questions:What is a cron job and when is the appropriate time to use it? Why is Rufus-Scheduler not a cron replacement and what does it do differently? Which one should I use?
|
Ruby on rails scheduled tasks
|
Method 1: Execute the script using php from the crontabJust like how you call your shell script (As show in our crontab 15 examples article), use the php executable, and call the php script from your crontab as shown below.To execute myscript.php every 1 hour do the following:crontab -e00 * * * * /usr/local/bin/php /home/john/myscript.phpMethod 2: Run the php script using URL from the crontabIf your php script can be invoked using an URL, you can lynx, or curl, or wget to setup your crontab as shown below.The following script executes the php script (every hour) by calling the URL using the lynx text browser. Lynx text browser by default opens a URL in the interactive mode. However, as shown below, the -dump option in lynx command, dumps the output of the URL to the standard output.00 * * * * lynx -dump http://www.thegeekstuff.com/myscript.phpThe following script executes the php script (every 5 minutes) by calling the URL using CURL. Curl by default displays the output in the standard output. Using the “curl -o” option, you can also dump the output of your script to a temporary file as shown below.*/5 * * * * /usr/bin/curl -o temp.txt http://www.thegeekstuff.com/myscript.phpThe following script executes the php script (every 10 minutes) by calling the URL using WGET. The -q option indicates quite mode. The “-O temp.txt” indicates that the output will be send to the temporary file.*/10 * * * * /usr/bin/wget -q -O temp.txt http://www.thegeekstuff.com/myscript.php
|
Closed.This question isoff-topic. It is not currently accepting answers.Want to improve this question?Update the questionso it'son-topicfor Stack Overflow.Closed11 years ago.Improve this questionI have never used CRON before but I want to use CRON in order to be able to perform schedule jobs for a php script. The php script is called "inactivesession.php" and in the php script is this code:<?php
include('connect.php');
$createDate = mktime(0,0,0,10,25,date("Y"));
$selectedDate = date('d-m-Y', ($createDate));
$sql = "UPDATE Session SET Active = ? WHERE DATE_FORMAT(SessionDate,'%Y-%m-%d' ) <= ?";
$update = $mysqli->prepare($sql);
$update->bind_param("is", 0, $selectedDate);
$update->execute();
?>Wht I want to do is that when the above date is reached (25th Oct), I want the php script to perform the UPDATE statement above. But my question is that how do I use CRON in order to do this?The server I am using is the university's server known as helios, does CRON need to be set up in helios, (do I have to call the admin for this) or is it something else which uses CRON.I have never used CRON before so can you explain to me how CRON can be set up for the example above with the server I am using?Thanks
|
How do you set up cron task? [closed]
|
I ran into some issues using the code (fromhttp://www.koders.com/python/fidA55A9DB55093A78DD26B55C606B267B2C5063A79.aspx?s=config) , and have fixed some of them. It used to break going from one month to the next. next_run now works fine, but prev_run gets stuck going from one month the previous (instead of failing it gets caught in a loop)Here is a git repository that I've set up to continue working on it:https://github.com/RFDaemoniac/crontab_parser
|
I'm writing a dashboard application and I need a way to figure out how long an item is "valid", i.e. when should it have been superseded by a new value (it's possible to have an error such that the next value never arrives).Since I know the schedules for the processes producing data, I can define valid as "until the next time the process should have ran".I thought the crontab format for specifying schedules was very compact (i.e. easy to store in a database), and also easy to understand.Finally the question: is there a Python module, that when given the current time and a crontab spec (e.g. "25 5 * * *"), returns a datetime giving the next runtime?
|
Is there a Python module to get next runtime from a crontab-style time definition?
|
I just found the answer to my question. I've defined the proxy being used and then used it like this in my code:HTTP_PROXY="http://your_proxy:proxy_port"
PROXY_DICT={"http":HTTP_PROXY}
response = requests.get(url, proxies=PROXY_DICT)Reference:Proxies with Python 'Requests' moduleThank you all for your comprehension. I guess I should have done a thorough search before posting. Sorry.
|
I've got a Python script which downloads data in json format through HTTP. If I run the script through command-line using the requests module, the HTTP connection is successful and data is downloaded without any issues. But when I try to launch the script as a crontab job, the HTTP connection throws a timeout after a while. Could anyone please tell me what is going on here? I am currently downloading data via a bash script first and then running the Python script from within that bash. But this is nonsense! Thank you so much!Using: 3.6.1 |Anaconda custom (64-bit)| (default, May 11 2017, 13:09:58) \n[GCC 4.4.7 20120313 (Red Hat 4.4.7-1)]P.S.: I haven't found any posts regarding this issue. If there is already an answer for this on some other post, then please accept my apologies.This is an excerpt from my code. It times out when running requests.get(url):try:
response = requests.get(url)
messages = response.json()["Messages"]
except requests.exceptions.Timeout:
logging.critical("TIMEOUT received when connecting to HTTP server.")
except requests.exceptions.ConnectionError:
logging.critical("CONNECTION ERROR received when connecting to HTTP server.")
|
Python requests hangs when script launched through crontab
|
You must handle that scenario, not sure linux will handle it gracefully. By adding a simple check before running your task that the task is not already running. If you don't do that, hell will probably break loose on your server.This post will help youRun cron job only if it isn't already running
|
Say you configure a cron job to run every minute to do something. What will happen if the actual task runs longer than a minute? Will cron create another job instance/thread? Or will cron wait and make sure the previous run is complete?Thanks!
|
Cron job running beyond interval
|
Maybe you are on version 2? It seems this is a potential bug or at least unrecorded behavior change for version 2. You can find out more here.https://github.com/apache/airflow/issues/13434
|
I have a airflow job with a daily schedule. It was running completely fine everyday, until yesterday where I manually triggered the dag a few hours after the scheduled run. The day after that (today) the task did not get executed).start date - 31.08.2020 03:00 @daily -> scheduled, all good
01.09.2020 03:00 -> scheduled, all good
01.09.2020 06:00 -> manual trigger
02.09.2020 03:00 -> task was not executed!I have not changed anything in the code/configuration so I suspect the manual trigger yesterday caused the dag to not run as scheduled today. Could there be another reason?default_args = {
'owner': 'raydex',
'depends_on_past': False,
'start_date': datetime(2020,5,31),
}
with DAG('task', default_args=default_args, schedule_interval='0 3 * * *', catchup=False) as dag:Does anyone know what exactly has caused this? How can I prevent this issue from happening once again? I needed to manually trigger it now once again, due to the job not being scheduled. I want it to be automatically scheduled once again, starting from tommorow (03:00).The Status is and was 'ON' in the UI.
|
Airflow scheduler not working after manual trigger of a dag
|
Put path to profile before path to script directly in crontab line, this will make script more flexible for future usage.Explanationhttps://serverfault.com/questions/337631/crontab-execution-doesnt-have-the-same-environment-variables-as-executing-userVery good answerhttps://unix.stackexchange.com/questions/27289/how-can-i-run-a-cron-command-with-existing-environmental-variablesanother very good answerhttps://unix.stackexchange.com/questions/6790/executing-a-sh-script-from-the-cronRecomendation:
There is probably answer to you question somewhere. One needs just to search for it.
|
What am I trying to achieve?
I'm trying to get crontab to kill the previous tmux session and create a new tmux session (with particular teamocil settings).Simple bash script that the crontab runs:#!/bin/bash
tmux kill-session;
tmux new-session -d "source /home/qa/.bash_profile;teamocil settings;";Issue I'm having?
Running this script manually works fine, but when running through crontab it will only work if at least 2 other tmux sessions pre-exist, i.e. it kills a session as part of the script, if there are then no sessions left the crontab won't create the 1st session. If after killing a session there is still another session available, then the script works.Findings so far?
I've found that if I declare the source as part of the bash script, not in the tmux new sessions command, then it works fine. Why would this be? See modified script below that works:#!/bin/bash
source /home/qa/.bash_profile
tmux kill-session;
tmux new-session -d "teamocil settings;";It would be really helpful to understand why this made a difference, to help me update other scripts and not make this mistake again. Any light that can be shed on this is appreciated.
|
When creating tmux session through crontab, specifying the .bash_profile source path inside `tmux new session -d` command doesn't work
|
zshsources.zshenv(source).bashsources$BASH_ENVif set. (source)
|
Closed.This question does not meetStack Overflow guidelines. It is not currently accepting answers.This question does not appear to be abouta specific programming problem, a software algorithm, or software tools primarily used by programmers. If you believe the question would be on-topic onanother Stack Exchange site, you can leave a comment to explain where the question may be able to be answered.Closed9 years ago.Improve this questionSay I create acronjob that runs a Zsh or Bash script as/path/to/shell_script.shWould such a shell be anon-interactivenon-loginshell? If so, what shellinitfiles would be executed (for Bash & Zsh)?
|
Do cron jobs run non-interactive, non-login shells? [closed]
|
I suggest, that you make a unit test based on your cron expression. With kudos toVan de Voorde Toni, you can base it on this code, and use it to verify that the "nextValidTimeAfter" matches your expectation:import java.text.ParseException;
import java.util.Date;
import org.quartz.CronExpression;
public class CronTester {
public static void main(String[] args) throws ParseException {
final String expression = "* * 17 0 0/2 *,SUN,MON";
final CronExpression cronExpression = new CronExpression(expression);
final Date nextValidDate1 = cronExpression.getNextValidTimeAfter(new Date());
final Date nextValidDate2 = cronExpression.getNextValidTimeAfter(nextValidDate1);
System.out.println(nextValidDate1);
System.out.println(nextValidDate2);
}
}
|
I need to create Job that will :starts one 12/20/2012endDate = 12/31/2017will occur every 2 weeks on Sunday and mondayfires at 5 pm.is this cron expression valid?Date start = 12/20/2012;
Date endDate = 12/31/2017;
SimpleTrigger trigger = newTrigger()
.withIdentity("trigger3", "group1")
.startAt(startDate)
.withSchedule(cronSchedule("* * 17 0 0/2 *,SUN,MON").build())
.endAt(endDate)
.build;Please advise.
|
Quartz - schedule jobs every two Weeks on several Day of week and time
|
If you don't want to mess with your cron file you should check outCelery, an asynchronous task queue written in Python. It was originally created with Django in mind but has since been broken outinto a separate package. What you want to do then is set up aCelerybeat schedulelike this:CELERYBEAT_SCHEDULE = {
"purchase-reminder": {
"task": "accounts.tasks.remind",
"schedule": timedelta(hours=24),
},
}This will call the task (read: function)accounts.tasks.remindevery 24 hours.
|
In my Django project, users are allowed to register to a free trial, but if they do not complete a purchase within 15 days, their accounts are locked out until they do complete the purchase. After 13 days (ie within 48 hours or expiry) I wish to send an email the registered user reminding him/her to purchase.Currently, I have a cron job set up to run daily and check all trial accounts if the registration date and current date are 2 days apart and if so, I send an email.I was wondering if there is a more elegant solution to do this?
|
Django: sending email x days later
|
First of all ,
1) You need to setup crontab in your server if you want to work dynamically
2) if you want manually wordpress scheduler will call after the page is runso,for the crontab setup below is useful link:crontab
|
In WordPress, I am creating a plugin where I am sending emails to users. For that, I am using WordPresscronjob. So basically what it will do is just send emails to users every hour.
So my code looks like thispublic function __construct() {
add_action('init', array( $this, 'send_emails_to_users') );
add_action('cliv_recurring_cron_job', array( $this, 'send_email') );
}
public function send_emails_to_users() {
if(!wp_next_scheduled('cliv_recurring_cron_job')) {
wp_schedule_event (time(), 'hourly', 'cliv_recurring_cron_job');
}
}
public function send_email() {
//send email code goes here
}Here everything looks good but it does not send the email.If I make my code like thispublic function __construct() {
add_action('head', array( $this, 'send_email') );
}Then it sends the email. But the problem is here it sends the email on every time the page loads or when the user visits the site.That's why I want to usewp_schedule_eventto make emails every hour.So can someone tell me how to resolve this issue?Any suggestions or help will be really appreciated.
|
WordPress schedule event not firing in set time
|
Ok, let's start over again.Create a file, saycron.txt, with exactly the following contents (1 line):* * * * * touch $HOME/CRON_IS_RUNNING(Donotcreate CRON_IS_RUNNING manually.) Runcrontab cron.txtwhich should quietly produce no output, thencrontab -lwhich should print* * * * * touch $HOME/CRON_IS_RUNNINGWait a minute or so, perhaps 2 minutes, thenls -l $HOME/CRON_IS_RUNNINGwhich should print something like-rw-r--r-- 1 yourname yourgroup 0 2011-08-23 20:11 CRON_IS_RUNNINGIf this all works, it will confirm that you can run cron jobs.If that's successful, the problem may be with yourtest.pycommand. Does it work when you run it from the command line? If it works from the command line but not fromcron,test.pymight have some dependency on environment variables (cron jobs run with fewer environment variables set than interactive commands typically do).
|
I will preface this by saying I am very new to command line programming with Debian Ubuntu...I have been trying to set up a crontab list on a Debian Ubuntu server but have not been able to get it to work. Here is a sample:[email protected]* * * * * wall test
* * * * * /usr/bin/python2.6 /home/user/test.py > /home/user/clean_tmp_dir.logThe above shows up when I type "crontab -l" but no resulting output appears in the console. The "test.py" is supposed to generate a csv file but none is being created.I am not receiving any output/error emails. I tried to find a log, but "var/log/cron" does not exist, nor does "etc/syslog.conf"...I tried to edit "etc/rsyslog.conf", but got "E212: Can't open file for writing"...I am logged in, however. Do I need some sort of special administrative privileges? Do I need to specify user or "root" or something?Does anyone know what I'm doing wrong, how I can create/view a log, or how I can perform any other straightforward tests? Thanks!
|
Testing Crontab on Debian Ubuntu
|
You can wait for the OS to signal you, e.g. CTRL-C from the user. Also your cron expression was for every minute, i.e. only where seconds == 1.package main
import (
"fmt"
"os"
"os/signal"
"time"
"github.com/robfig/cron"
)
func main() {
c := cron.New()
c.AddFunc("* * * * * *", RunEverySecond)
go c.Start()
sig := make(chan os.Signal)
signal.Notify(sig, os.Interrupt, os.Kill)
<-sig
}
func RunEverySecond() {
fmt.Printf("%v\n", time.Now())
}
|
I'm trying to write a program that will continuously call a method at a certain time interval. I'm using a cron library to try and achieve this but when I run the program it just executes and finishes with out any output.Below is a basic example of what I'm trying to do.Assistance greatly appreciated!package main
import (
"fmt"
"github.com/robfig/cron"
)
func main() {
c := cron.New()
c.AddFunc("1 * * * * *", RunEverySecond)
c.Start()
}
func RunEverySecond() {
fmt.Println("----")
}
|
Running a Go method using cron
|
You can change directory to the one you want and then run the php from that directory by doing this:cd /var/www/vhosts/clientname/stagingsite/rss/&&/usr/bin/php dorss.phpIt's easier than creating bash scripts, here is the result:0 0,6,12,18 * * * cd /var/www/vhosts/clientname/stagingsite/rss/ && /usr/bin/php dorss.php
|
I created a php script for generating RSS feeds which is to eventually be run via a Cronjob.All the php files and the resulting RSS xml will be within a sub folder in a website. The php script runs fine on my local dev if I use terminal or the browser while within the same directory on my local development machine.e.g. php /Library/WebServer/Documents/clientname/siteroot/rss/dorss.phpworks fine as does navigating to the dorss.php file in Chrome.The CronJob has executed though with errors related to the fact that it cannot find the files specified with require_once() which are located in the same folder as rss or in a subfolder of that.Long story short I need to have the Cronjob run from within the same directory as the dorss.php file so it can reference the include files correctly.My knowledge on setting up a cronjob is VERY limited so I wanted to ask if this is at all possible (Change directory before running command) to do this on the same command line of the crontab or if not how can it be achieved please?The current cronjob command is0 0,6,12,18 * * * /usr/bin/php /var/www/vhosts/clientname/stagingsite/rss/dorss.phpTIA
John
|
Running Cronjob from a specific directory
|
namespace :sc do
desc 'All'
task all: [:create_categories, :create_subcategories]
desc 'Create categories'
task create_categories: :environment do
# your code
end
desc 'Create subcategories'
task create_subcategories: :environment do
# your code
end
endin console write $ rake sc:all
|
Have just installed whenever gemhttps://github.com/javan/wheneverto run my rake tasks, which are nokogiri / feedzilla dependent scraping tasks.eg my tasks are called grab_bbc, grab_guardian etcMy question - as I update my site, I keep add more tasks to scheduler.rake.What should I write in my config/schedule.rb to make all rake tasks run, no matter what they are called?Would something like this work?every 12.hours do
rake:task.each do |task|
runner task
end
endAm new to Cron, using RoR 4.
|
How do I run all rake tasks?
|
Arkaitz has the simplest solution. However, to see what's wrong with your snippet we need to go into the bash manual:Note that the order of redirections is significant. For example, the
commandls > dirlist 2>&1directs both standard output and standard error to the file dirlist,
while the commandls 2>&1 > dirlistdirects only the standard output to file dirlist, because the standard
error was duplicated from the standard output before the standard out‐
put was redirected to dirlist.So apparently the output redirection only redirects to thetargetof the other stream, not to the other stream itself. When bash parses your command line it will come upon the2>&1clause and redirectstderrto the target ofstdout, which at this point is still the console (or whatever is attached tocron'sstdout). Only after this willstdoutbe redirected.So what you really want is:05 18 * * * ~/job.sh >>~/job.log 2>&1
|
I have a simple cronjob running every day at 18:35:05 18 * * * ~/job.sh 2>&1 >> ~/job.logSo the output of ~/job.sh should be written into ~/job.log. In job.sh, there are some echo commands and a few python scripts are executed, e.g.:echo 'doing xyz'
python doXYZ.pyNow, whatever output the python scripts produce, they are not written into ~/job.log. I only see the echo text in ~/job.log. How can I redirect thecompleteoutput of the shell script to ~/job.log?
|
How to redirect complete output of a cron script
|
Ruby Version Manager (rvm) was causing the problem. I had to call the script in cron like this.*/15 * * * * bash -c 'source /home/username/.rvm/scripts/rvm && /usr/bin/env ruby /home/username/twitter/twitter.rb friends'
|
I've a bash script that runs a ruby script that fetches my twitter feeds.## /home/username/twittercron
#!/bin/bash
cd /home/username/twitter
ruby twitter.rb friendsIt runs successfully in command line./home/username/twittercronBut when I try to run it as a cronjob, it ran but wasn't able to fetch the feeds.## crontab -e
*/15 * * * * * /home/username/twittercronThe script has been chmod +x. Not sure why it's as such. Any ideas?
|
Script executes successfully in commandline but not as a cronjob
|
Seems that cron runs by default on the iPhone, you just need to be able to edit the crontab file -eitherthe root oneor the user onebut not the user one apparently.There are issues with sleep and cron, but there's a good discussion at that link.
|
Closed.This question isoff-topic. It is not currently accepting answers.Want to improve this question?Update the questionso it'son-topicfor Stack Overflow.Closed11 years ago.Improve this questionNote - I have not delved very deeply into Apple's iPhone SDK yet.However, based on anotherquestionasked recently, I'm wondering if, since the iPhone is running some stripped-down edition of Mac OS X if it doesn't have a crontab feature.If so, how would you access it?Thanks.
|
Is the iPhone "cron-able"? [closed]
|
Google Cloud Scheduler does not support seconds. The smallest scheduling interval is one minute.
|
What would be a correct syntax for the Cloud Scheduler Frequency field to run it every 10 seconds?I've been usinghttps://crontab.guru/but it seems to be missing thesecondsand starts with minutes, hours and etc.
|
How to run every 10 seconds in GCP Cloud Scheduler
|
I solved the problem myself. Thanks for all the replies!My MySQL timed out, that was the problem. As soon as I added:ini_set('mysql.connect_timeout', 14400);
ini_set('default_socket_timeout', 14400);to my script the problem stopped. I really hope this helps someone. Ill upvote all the locking answers, because those were very helpful!
|
I have a products database that synchronizes with product data ever morning.The process is very clear:Get all products from database by queryLoop through all products, and get and xml from the other server by product_idUpdate data from xmlLog the changes to file.If I query a low amount of items, but limiting it to 500 random products for example, everything goes fine. But when I query all products, my script SOMETIMES goes on the fritz and starts looping multiple times. Hours later I still see my log file growing and products being added.I checked everything I could think of, for example:Are variables not used twice without overwriting each otherDoes the function call itselfDoes it happen with a low amount of products too: no.The script is called using a cronjob, are the settings ok. (Yes)The reason that makes it especially weird is that it sometimes goes right, and sometimes it doesnt. Could this be some memory problem?EDITwget -q -O /dev/null http://example.eu/xxxxx/cron.php?operation=syncits in webmin called on a specific hour and minuteCode is hundreds of lines long...Thanks
|
Long PHP script runs multiple times
|
Solution found, it seems that you have to uncomment the line where the openssl extension can be found in (path to wamp)\bin\php(your php version)\php.ini since there are 2 php.ini files, enabling it only in the (path to wamp)\bin\apache(apache version)\bin\php.ini is not enough
|
I am trying to send an e-mail from a cron using CakePHP shell but I am getting the following error "Unable to find the socket transport "ssl" - did you forget to enable it when you configured PHP?: 0".The problem is on local server only, I am using WAMP server and the php_openssl extension is correctly turned on. When I checked if the extension is being loaded from a controller everything seems fine but when I debug the shell action, the extension doesn't seem to be loaded. Furthermore when I try to send an e-mail from a controller, the e-mail is successfully sent. I am using gmail credentials thus the ssl requirement.Thanks
|
Unable to find the socket transport "ssl", CakePHP sending e-mail from shell
|
Apparently there was something wrong with the timezone, I live in Belgium. So everything excecuted 2 hours earlier. So I had to set my cronjobs differently.dailyAt('21:59')//does cronjob at 23:59
|
I am making an online contest. Every night at 23:59 a winner should be picked using a cronjob in Laravel. When I am using everyminute it works fine. However if i change it to dailyAt('23:59')
or cron(59 23 * * *) it doesn't
This is my commando to run te cronjob:protected function schedule(Schedule $schedule)
{
// $schedule->command('inspire')
// ->hourly();
$schedule->command('pick:winner')->everyMinute(); //we should use dailyAt but this is not working;
}
|
Laravel Cronjob Dailyat not working
|
No, it should be in 24 hour format so0 13 * * *
|
i need to run a cron at 1:00 PM UTC every day, is this the right crontab for UTC ?0 1 * * *
|
Run a cron script at 1:00 PM UTC every day
|
There are multiple ways of doing repetitive jobs. Some of the ways that I can think about right away are:Using:https://www.setcronjob.com/Use an external site like this to fire off your url at set intervalsUsing meta refresh. Morehere. You'd to have to open the page and leave it running.Javascript/Ajax refresh. Similar to the above example.Setting up a cron job. Most shared hosting do provide a way to set up cron jobs. Have a look at the cPanel of your hosting.
|
Scheduled task needs to be created but its not possible to use Cron job (there is a warning from hosting provider that "running the cron Job more than once within a 45-minute period is a infraction of their rules and could result in shutting down the account."php script (which insert data from txt to mysql database) should be executed every minute, ie this link should be calledhttp://www.myserver.com/ImportCumulusFile.php?type=dayfile&key=letmein&table=Dayfile&file=./data/Jan10log.txtIs there any other way?
|
creating schedule task without Cron job
|
I just placed an entry in my crontab:*/3 * * * * /scripts/matviewsRefresh.shThis calls the script every three minutes, you can tune that.
And insidematviewsRefresh.sh:echo 'select matview_refresh_all();' | su - postgres -c "psql MYDBNAME"Of course,matview_refresh_allis a pl/pgsql function that loops over all my materialized views and refresh the old ones (I added an auxiliary table that records the time of last refresh for each mview, and each one has a different refresh frequency)
|
I am trying to mimic snapshotmaterialized viewbased onthis article on valena.comand have created the materialized views that I need.My next task is to execute the refresh materialized view scripts on a nightly basis in PostgreSQL. I am using pgAdmin and found out that I need to install pgagent on my database server (Linux) and create jobs in pgAdmin by writing pgscript.Is that what I need, or is there a better way to run this script on a nightly basis?for all i in tables that begin with name 'mview_%'
SELECT refresh_matview(i);
end loop;
|
PostgreSQL script execution every night
|
I think better way is getload avarage, because it depends not only on CPU, but on HDD speed also.Here is a doc:http://php.net/manual/en/function.sys-getloadavg.php
|
I want to know the memory and CPU usage in php, because I'm using cronejobs sometimes the CPU is overloaded so in this case I don't wan to start more process, I just want to skip this cron.
|
How can I get the CPU and Memory useage
|
Cronjob is not something to create as Php process or script.Cronis a linux program that allows you to call a script at a regular interval.You can see what is an crontab by entering in your linux machine as an admin user and type:root@valugi:~# crontab -eYou will see something like*/1 * * * * /usr/bin/php /var/www/somesite/public/cron.phpThis means that each minute I am executing the cron.php.Now, you may want to have different scripts executed at different times and want to pass this logic to php level instead of linux level. If this is the case you may want to call your cron script at the lowest time denominator (minute for example) and in the cron.php build some logic that will call at different times other scripts.I use for example a Cronable interface:interface Cronable {
public function cron();
}And each class that wants to be called by the cron.php has to implement this interface and the cron() function, which will specify what is the specific frequency of the call. The cron.php will get all this classes and will compare current time with that time and will decide to execute the call or not.
|
As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened,visit the help centerfor guidance.Closed11 years ago.I'm looking for a good cronjob tutorial or book to learn how to create one using PHP.
|
PHP - good cronjob/crontab/cron tutorial or book [closed]
|
Thecronitermodule (which Airflow uses for the execution date/time calculations)supports the hash symbol for the day-of-week fieldwhich would allow you to schedule, what I believe will work, the second Monday of each month.For example,"30 7 * * 1#2"says to run at 7:30AM, every month, on the second Monday. Using this code to test it:from croniter import croniter
from datetime import datetime
cron = croniter("30 7 * * 1#2")
for i in range(10):
print(cron.get_next(datetime))yields:datetime.datetime(2018, 10, 8, 7, 30)
datetime.datetime(2018, 11, 12, 7, 30)
datetime.datetime(2018, 12, 10, 7, 30)
datetime.datetime(2019, 1, 14, 7, 30)
datetime.datetime(2019, 2, 11, 7, 30)
datetime.datetime(2019, 3, 11, 7, 30)
datetime.datetime(2019, 4, 8, 7, 30)
datetime.datetime(2019, 5, 13, 7, 30)
datetime.datetime(2019, 6, 10, 7, 30)
datetime.datetime(2019, 7, 8, 7, 30)
|
Is it possible to schedule an airflow DAG to run at a specific time on the Monday directly before the 15th of each month? I think this cron string might do it but I'm not sure that I have understood correctly0 10 8-14 * MONSo I think that this should run at 10:00 on a Monday only between the 8th and the 14th of each month. As there can only be one Monday between the 8th and the 14th, this should run only once a month and it will be the Monday preceding the 15th of the month.Is that correct?
|
Airflow schedule a task to run on the Monday before the 15th of the month
|
In order to show how I managed to solve my issue with the hope of helping others, Here I post it as an answer to my own question:I got around the problem by usingsystem-wide crontab(/etc/crontab) instead ofper user crontab(crontab -e).To clarify this,/etc/crontabis thesystem-widecrontab:# m h dom mon dow user command
* * * * * someuser echo 'foo'whilecrontab -eisper user'crontab':# m h dom mon dow command
* * * * * echo 'foo'Notice in a per user crontab there is no 'user' field.
|
I'm new to Linux and I've been struggling with this issue for a while in my Raspberry Pi and had no success.First I wrote a simple script in/home/myfile.shlike this:#!/bin/bash
clear
echo "hi"Then I did thesudo chmod 755 /home/myfile.shto grant the permissions.And finally I modified thecrontabusingcrontab -e:# some comments ...
* * * * * /home/myfile.shThe problem:When I run the script manually it works fine but when I set the above line in mycrontab, nothing ever happens. What am I doing wrong?
|
Crontab in Raspberry pi doesn't run a very simple script
|
Here's a function from PHP that can remove a file.https://www.php.net/unlinkAnd also, the example here;https://www.php.net/manual/en/function.unlink.php#108940Contains information on how you can delete files from a directory (just skip the rmdir at the bottom)Edit: Forgot about the cron-thing. :)If you create a file within your /home/a1206305/ called directory.php with this content:<?php
$path = "/home/a1206305/domain.com/data/";
foreach(glob($path . "*") as $file)
{
if(is_file($path . $file))
unlink($path . $file);
}
?>And then in that second field for cron, just write in directory.php
|
I want to delete all files inside a folder called " data " with php and using Cron Job, theCron Job is set to run script every hour, but i'm lost what should i write in the emptytextfield and and how delete all files inside a specific folder in php??please someone explain me and help me out...Fixed it:Placed delete.php inside the empty fieldand wrote inside delete.php the code down below:<?php
define('PATH', 'folder/');
function destroy($dir) {
$mydir = opendir($dir);
while(false !== ($file = readdir($mydir))) {
if($file != "." && $file != "..") {
chmod($dir.$file, 0777);
if(is_dir($dir.$file)) {
chdir('.');
destroy($dir.$file.'/');
rmdir($dir.$file) or DIE("couldn't delete $dir$file<br />");
}
else
unlink($dir.$file) or DIE("couldn't delete $dir$file<br />");
}
}
closedir($mydir);
}
destroy(PATH);
echo 'all done.';
?>
|
Cron Job - delete all files inside a specific folder
|
Find the crontab file and add this line:0 0,12 * * * curl --silent --compressed http://mydomain/index/cronYou can also do it with other tools, such as lynx or wget, not necassarily curl - the above is just an example.
|
How run zend framework action (inside index controller) by cron every 12 hours?The case:I have basic(no modules) zend project (1.11) that created by zf tool.Inside main IndexController exist cronAction() - urlhttp://mydomain/index/cron.Need to run cronAction() once per 12 hours by cron.Thanks
|
How run zend framework action (inside index controller) by cron every 12 hours?
|
ok i had to navigate to the root of the project in the terminal, there exists a script named yii, i used the following command to run the cron:php yii cronName.for example a cron controller named FirstController should be run like this:rootFolderName/ php yii first
|
I'm using the advanced template application of yii2 and i want to create a cron.
I could find only little information while googling the subject and so far found that cron jobs should go in the console folder.my structure:backend/
.
.
.
console/
models/
Subscriptions.php // my custom table model
.
.
.
controllers/
TimelineController.php
.
.
.I don't know where to go from now or how to proceed? How can I run the cron?LAMP environment.
|
Running a cron in Yii2
|
Add this to /etc/crontab0 * * * * wget -O - -q -t 1 http://www.example.com/cron.phpAlternatively, create a shell script in the /etc/cron.hourlyFile: wget#!/bin/sh
wget -O - -q -t 1 http://www.example.com/cron.phpmake sure you chmod +x wget (or whatever filename you picked)
|
I have a shell access on a Linux box where my Website resides.I want to call a URL each hour on that Website (it's not a specific PHP file, I have codeigniter has a framework and some Apache redirects, so I really need to call a URL).I guess I can use wget and crontab? How?
|
How to call a URL periodically form a linux box (cron job)?
|
You get this error while setting the crontab? or from a script running from the cron?If while setting the crontab, try this:You type: crontab -e
You get: -bash: /usr/bin/crontab: Permission deniedProblem: Your user is not in the cron group.Solution: As root, edit the /etc/group file, find the cron group and add
your user to that line (the usernames are comma-separated).
Then re-login as your user.Verify: Run command "groups". You should see "cron" in there.(fromhttp://www.parseerror.com/argh/crontab-e-Permission-denied.txt)
|
I have set the cron tab for my site. But I have got message in my mailing id like this "Permission denied" for the script. Can anyone help me telling what may be the problem.Thanks......
|
How to give permission for the cron job file?
|
If you know that your$DISPLAYwill be the same, you can do:echo "DISPLAY=$DISPLAY zenity --info --text=\"time is up\"" | at now + 30 minutesProviding the environment variable in this way will make it available tozenitywhen it's run.
|
Is there a way to create a temporary one-time only cron job from the command line? I'd like to have an egg-timer like function to open a terminal and do:notify "time is up" 30which would simply run this after 30 minutes:zenity --info --text="time is up"It seems easy enough for me to create, but I'm having a hard time believing no one has created something similar. Searching Ubuntu's repository for timing packages doesn't show anything. Has this been done before?
|
Creating a Temporary Cron Job From the Terminal
|
You need a Rakefile like:desc "This task is called by the Heroku cron add-on"
task :cron do
# Do something
endHeroku periodically executes rake cron in your app depending on whether you have selected the "cron add-on" to be hourly or daily.
|
I'm writing a tiny Sinatra app, and I want to host it onHerokufor simplicity sake. But, what I have is a task that scraps some sites and adds some data into my database every hour. Currently this is just written as a ruby script that needs to be executed. What Heroku has is arake based cron job. Now if this was a rails app, I could easily do this, but I want to avoid the clutter for something as simple as this.Is there a way to avoid this? Or do I have to install rake as well with my app?Thank you.Eric
|
How to run a cron job in Heroku, with a Sinatra app
|
echo 'password' | sudo -S command
|
How can i run a command in shell script with sudo? This script will be run by a cron job, so there should be no human intervention to enter a password manually.
|
Run a command with sudo in bash shell
|
You will need to schedule the job with a new trigger. Triggers can't be updated once they're created.
|
I am getting job details like start time and effective date from the database and on the basis of the job details, I am creating the job but what if I have got another entry for new job or the start time has been changed for the scheduled job, so how new job will be added in the job scheduler or new start time will be changed in the scheduler.I am using C#.net.
|
How to add new job or update the trigger for existing job in the Quartz.Net?
|
You can't change the cron jobs to run on a different version then the default.Depending on how much time your cron job takes to run you could change your cron job script to to do a URLFetch to "http://latest.appname.appspot.com/cron_job_endpoint".If you're cron job takes longer then 10 minutes to run, then I would design it in a way that you can chain the different tasks using task queues.
|
Recently I've started using limited staging on my Google App Engine project. The data is still shared between all versions, but behaviour (especially user facing behaviour) is different.Naturally when I implement something incredibly new it only runs on the latest version of my code and I don't feel like it should be backported to the older versions.Some of this new functionality requires cron jobs to be run periodically, but I'm hitting a problem. I have to run a cron job to call the latest code, but this is what Google's documentation has to say about the issue:Cron requests are always sent to the default version of the application.The default version is the oldest because the first versions of the client code that went out to users weren't future proof and don't know how to select which API version to call.So my question is, how can I get around this limitation and make a cron job that will call the latest rather than the default version of the application?
|
How to run GAE cron jobs as specific app version?
|
There should be something in your system log when the job was run. The other thing you could >try is to add 2>&1 to the job to see any errors in your text file. – Lars Kotthoff yesterdayThis proved to be the key piece of information - adding 2>&1 allowed me to capture an error that wasn't getting reported anywhere else. The completed command line then looked like:java -jar /home/mydir/myjar.jar 2>&1 >>/home/mydir/crontaboutput.txt
|
I have a cron job on an Ubuntu 10.4 server that stopped running for no apparent reason. (The job ran for months and has not been changed.) I am not a *nix guru so I plead ignorance if this is a simple problem. I can't find any reason or indication why this job would have stopped. I've restarted the server without success. Here's the job:# m h dom mon dow command
0 * * * * java -jar /home/mydir/myjar.jar >>/home/mydir/crontaboutput.txtThe last line in the output file shows that the program ran on 8/29/2012. Nothing after that.Any ideas where to look?
|
Cron job mysteriously stopped running?
|
You could just puttimein front of your crontabs, and if you're getting notifications about cron script outputs, it'll get sent to you.For example, if you had:0 1,13 * * * /maint/run_webalizer.shaddtimein front0 1,13 * * * time /maint/run_webalizer.shand you'll get some output that looks like (the "real" is the time you want):real 3m1.255s
user 0m37.890s
sys 0m3.492sIf you don't get cron notifications, you can just pipe the output to a file.
|
I'm doing a research project that requires I monitor cron jobs on a Ubuntu Linux system. I have collected data about the jobs' tasks and when they are started, I just don't know of a way to monitor how long they take to finish running.I could calculate the time of finishing the task minus starting itwith something like thisbut that would require doing that on the Shell scripts of each cron job. That's not necessarily difficult by any means but it seems a little silly that cron wouldn't in some way log this, so I'm trying to find an easier way :Ptl;dr Figure out time cron jobs take from start to finish
|
cron jobs: Monitor time it takes for jobs to finish
|
This will add a script that runs every day at 9:30am.exec('echo -e "`crontab -l`\n30 9 * * * /path/to/script" | crontab -');You may run into problems with permissions if you are running this script from a web server. To get around this, I would suggest a different approach.Here is one possible solution. Create a list of scripts that need to be run. You can save this in a text file or in a database. Create a script to read this list and run it every minute or every 5 minutes (using a cronjob). Your script will need to be smart enough to decide when to run the list of scripts and when to simply exit.
|
How can I set cron job through PHP script.
|
How can I set cron job through PHP script
|
I think you forgot to configurespring.quartz.overwrite-existing-jobs = trueWhether configured jobs should overwrite existing job definitions.
|
I have created a Cron schedule trigger in my spring boot application as follows and it is getting fired perfectly fine. The problem is that when I change the Cron schedule expression in my code below and restart the spring boot application, the Cron schedule trigger is not getting updated and still firing the old Cron schedule expression value.On inspecting the database tables, I see that the record in the table qrtz_cron_triggers is not getting updated.The record in the qrtz_cron_triggers table is"quartzScheduler" "Qrtz_NEReportProcessor_Job_Trigger" "DEFAULT" "0 30 22 ? * *" "Asia/Calcutta"How to ensure that on restart of my spring boot application, the cron schedule expression value gets updated? My code is below.@Bean(name = "nRJobDetail")
public JobDetail nRJobDetail() {
return newJob().ofType(NEReportJob.class).storeDurably().withIdentity(JobKey.jobKey("Qrtz_NEReportProcessor_Job_Detail")).withDescription("Invoke NEReportProcessor Job service...").build();
}
@Bean
public Trigger nRTrigger(@Qualifier("nRJobDetail") JobDetail job) {
return newTrigger().forJob(job).withIdentity(TriggerKey.triggerKey("Qrtz_NEReportProcessor_Job_Trigger")).withDescription("NEReportProcessor trigger")
.withSchedule(CronScheduleBuilder.cronSchedule("0 00 23 ? * *")
)
.build();
}
|
Why is my Quartz trigger not updating changed Cron expression on restart of my Spring boot application?
|
See here:https://laravel.com/docs/5.6/schedulingYou add* * * * * php /path-to-your-project/artisan schedule:run >> /dev/null 2>&1into your cron tab, which runs artisan schedule:run and then you add your console commands into the schedule Kernel with their schedule parameters, laravel handles the rest :)From the docs:<?php
namespace App\Console;
use DB;
use Illuminate\Console\Scheduling\Schedule;
use Illuminate\Foundation\Console\Kernel as ConsoleKernel;
class Kernel extends ConsoleKernel
{
/**
* The Artisan commands provided by your application.
*
* @var array
*/
protected $commands = [
//
];
/**
* Define the application's command schedule.
*
* @param \Illuminate\Console\Scheduling\Schedule $schedule
* @return void
*/
protected function schedule(Schedule $schedule)
{
$schedule->call(function () {
DB::table('recent_users')->delete();
})->daily();
}
}Edit:You are also specifying an odd path to artisan, try:*/3 * * * 1-5 cd /var/www/project/html/current/artisan import:myData >/dev/null 2>&1Instead of*/3 * * * 1-5 cd /var/www/project/html/current/ php artisan import:myData >/dev/null 2>&1
|
When I usually run my commands I do it from/var/www/project/html/current/and it looks like thisphp artisan import:myData. This works great.But I can't get it to work while running it as a cron job, I have tried the following cron jobs.*/3 * * * 1-5 cd /var/www/project/html/current/ php artisan import:myData >/dev/null 2>&1
*/3 * * * 1-5 /var/www/project/html/current/ php artisan import:myData >/dev/null 2>&1
*/3 * * * 1-5 /usr/local/bin/php /var/www/project/html/current/ php artisan import:myData >/dev/null 2>&1Does anybody have a suggestion?Thanks
|
Cron job for a php artisan command
|
I've finally used a little tool available for Raspbian:flockIn my crontab config file, I've put this:flock -n /tmp/importer.lock dotnet ~/Desktop/Importer/Plugin.Clm.Importer.Console.dllIt seems that flock writes a lock file while it's running, and executes the command. It it's executed again, and the lock file is there, it just fails. When it finishes, it releases the file, allowing it to be called again.In a few words: it acts as a semaphore :)
|
I would like to execute a .NET Core Application on aschedulein Linux usingcrontab. It's a long running operation andI don't want another instance to be run if a previous execution hasn't finished yet. In other words, I don't wantcrontabto execute more than one instance of my .NET Core App at a given time.Is there any way to avoid it? I would prefer not to modify the code of my app. Maybe there is an option for crontab to avoid concurrency. I'm not a Linux expert (yet) :)
|
Single instance .NET Core App (or making crontab run only 1 instance of my app)
|
You have to addartisanadd the end of the path. Try* * * * * php /Users/myusername/Projects/projectname/artisan schedule:run >> /dev/null 2>&1
|
I can't get my cron working on my local server using Valet. Here's what I've got/done.When I runphp artisan command:mycommandthe command runs.When I runphp artisan schedule:runthe command runs.Output:Running scheduled command: '/usr/local/Cellar/php70/7.0.13_6/bin/php' 'artisan' game:resources > '/dev/null' 2>&1 &According to the Laravel docs it says to add this to my crontab.* * * * * php /path/to/artisan schedule:run >> /dev/null 2>&1When in my project directory, here is the pwd./Users/tjhillard/Projects/galaxywarsWhen I trycrontab -ein my laravel project root and save this:* * * * * php /Users/myusername/Projects/projectname schedule:run >> /dev/null 2>&1... it doesn't work. I've tried several variations of this cron command with no luck. Any idea what I'm doing wrong?I'm on macOS using Valet.
|
Laravel Task Scheduler Crontab
|
What you have there is a line that will run the command every five minutes between09:00and16:55(all ranges here are inclusive).What you're trying to achieve can be done relatively simply with threeseparatecrontablines:30-59/5 9 * * * /path/to/directory/job.sh > /path/to/log/file/job.log 2>&1
*/5 10-15 * * * /path/to/directory/job.sh > /path/to/log/file/job.log 2>&1
0 16 * * * /path/to/directory/job.sh > /path/to/log/file/job.log 2>&1The first handles the case between09:30and09:55, the second every five minutes between10:00and15:55, and the final one the single job at16:00.
|
I need to set a cronjob to run a bash script every 5 minutes, starting at 9:30am until 4:00pm.I have the following but, it's not quite right...Cronjob:*/5 9-16 * * * /path/to/directory/job.sh > /path/to/log/file/job.log 2>&1
|
Set Cronjob to Run Every 5 Minutes From 9:30am to 4:00pm
|
Cron is not meant to solve such problems. It defines the exact date and times, when a trigger must be fired, not intervals. Use a simple schedule instead:TriggerBuilder.Create()
.StartAt(startDate)
.WithSimpleSchedule(
simpleScheduleBuilder => simpleScheduleBuilder.WithIntervalInMinutes(45))
.Build();Edit:It's either a simple schedule as above, or multiple cron triggers (Quartz jobs can have multiple triggers):0 0/45 12/3 * * ? # 12:00, 12:45, 15:00, 15:45, ...
0 30 13/3 * * ? # 13:30, 16:30, ...
0 15 14/3 * * ? # 14:15, 17:15, ...
|
I want a cron expression which fires every 45 minutes.According to the documentation, I have created this0 0/45 * * * ?expression.But it is fired in a pattern like 12:00, 12:45, 13:00, 13:45, 14:00.But what I expect and want is to be fired at 12:00, 12:45, 13:30, 14:15.What am I missing?
|
Cron expression to be executed every 45 minutes
|
Controllers don't run by themselves, they work as a component of Laravel. If you're loading your controller directly then Laravel is not being loaded and as far as PHP is concernedBaseController, as well as Laravel'sControllerclass, does not exist. Normally your web server loadspublic/index.phpwhich loads Laravel and so on. If that's confusing you may want to learn about how autoloading with Composer works:http://net.tutsplus.com/tutorials/php/easy-package-management-with-composer/What you should do iswrite an Artisan commandthat does what you need and call that command using cron. This question gives details on how to accomplish this:Cron Job in Laravel
|
I need a Cron job for execute a Scraper to a Website and send emails with the information, I made a Controller to do that, but when I set up the command to run that filephp app/controllers/ScraperController.phpI get this errorPHP Fatal error: Class 'BaseController' not found in
/var/www/U-Scraper/app/controllers/ScraperController.php on line 2The thing is, it works when I set up with a route to that controller
|
A Cron Job in Laravel 4
|
Thank u for all ur comments... its very useful to me... But i try the all the way, But my hosting domain ll not support, thats y i tried,php -q /path/to/the/script.phplike that, its working fine,My cron now working fine... Thank u all...Regards,
Vinoth S
|
$_SERVER['DOCUMENT_ROOT']/file.php: line 1: ?php: No such file or directory
$_SERVER['DOCUMENT_ROOT']/file.php: line 2: syntax error near unexpected token `0'
$_SERVER['DOCUMENT_ROOT']/file.php: line 2: `set_time_limit(0);'the above error, i got while run cron,how to fixed that?and the path from document rootshall i give virtual path for that, likehttp://domain.com/file.php, and also am try this, but it ll return the error "Non such file directory"...can anyone help me... Thanks in Advance..Regards,
Vinoth S
|
I got error while run cron job using php, How to i fixed it?
|
Drupal executes all of its hooks in the order based off of module weight. Module weight defaults to 0, and the secondary ordering is alphabetical by module name:http://api.drupal.org/api/function/module_list/6
|
What order does Drupal execute it's _cron hooks? It is important for a certain custom module I am developing and can't seem to find any documentation on it on the web. Maybe I'm searching for the wrong thing!
|
Drupal hook_cron execution order
|
cron jobs run while the computer is on & not sleeping, so it will run in situations 1 and 2. If the computer is off or asleep at the job's scheduled time, it doesnotdo any sort of catch-up run later when the computer restarts/wakes up; therefore, it willnotrun in situation 3.Let me also clarify about situations 1 and 2: cron jobs run independently of any user login sessions, and any programs they're running. They can't read from Terminal input, anything they print won't show up on screen, and since they aren't part of your login session they have a limited ability to interact with the regular graphical user interface and running programs. They live in a semi-separate world from the programs (including Terminal commands) you run interactively.Note that crontabs are generally deprecated on macOS; the preferred way to run programs automatically is withlaunchd. But the launchd equivalent of a user crontab, called a Launch Agent,doesrun as part of a logged-in user session (and -- mostly -- gets skipped when the user is not logged in). And also, launchd jobsdoget run if a scheduled run gets missed because the computer is off/sleeping. So they're quite a bit different from cron jobs.
|
Beginner here. I have a few questions regarding crontabs, on mac / osx (if it makes a difference). I'd like to understand in what scenarios my crontab will run, and when it doesn't.Idoknow that this is true:When I turn off my computer, the cronjob won't be executed.That was the easy part. But what about these cases:The terminal is not open, but I am logged inThe machine is running, but I am not logged inThe cronjob is set for 9am, but my computer is off at the time, and I turn it on & log in at 10amWhen will it work, when won't it?
|
In which of these scenarios will my crontabs run, when won't they?
|
It's not that hard. First set up thecrontabto run a checker every minute:* * * * * /home/mydir/check_and_start_script.shNow in/home/mydir/check_and_start_script.sh,#!/bin/bash
pid_file='/home/mydir/script.pid'
if [ ! -s "$pid_file" ] || ! kill -0 $(cat $pid_file) > /dev/null 2>&1; then
echo $$ > "$pid_file"
exec /usr/bin/python2.7 /home/mydir/public_html/myotherdir/script.py
fiThis checks to see if there's a file with the process id of the last run of the script. If it's there, it reads the pid and checks if the process is still running. If not, then it puts the pid of the currently running shell in the file and executes the python script in the same process, terminating the shell. Otherwise it does nothing.Don't forget to make the script executablechmod 755 /home/mydir/check_and_start_script.sh
|
I have a Python script that I'd like to run from a cronjob and then check every minute to see if it is still running and if not then start it again.Cronjob is:/usr/bin/python2.7 /home/mydir/public_html/myotherdir/script.pythere is some info on this but most answers don't really detail the full process clearly, e.g.:Using cron job to check if python script is runninge.g. in that case, it doesn't state how to run the initial process and record the PID. It leaves me with a lot of questions unfortunately.Therefore, could anyone give me a simple guide to how to do this?e.g. full shell script required, what command to start the script, and so on.
|
Running Python process with cronjob and checking it is still running every minute
|
pgrep -f lists itself as a false match when run from cronI did the test with ascript.pyrunning an infinite loop. Thenpgrep -f script.py...from the terminal, gaveonepid,13132, while running from cron:pgrep -f script.py > /path/to/out.txtoutputstwopids,13132and13635.We can therefore conclude that the commandpgrep -f script.pylists itself as a match, when run from cron. Not sure how and why, but most likely, this is indirectly caused by the fact thatcronruns with a quite limited set of environment variables (HOME, LOGNAME, and SHELL).The solutionRunningpgrep -ffrom a (wrapper) script makes the commandnotlist itself, even when run fromcron. Subsequently, run the wrapper fromcron:#!/bin/bash
if ! pgrep -f 'test.py'
then
nohup python /home/dp/script/test.py & > /var/tmp/test.out
# run the test, remove the two lines below afterwards
else
echo "running" > ~/out_test.txt
fi
|
I want to execute my python file via crontab only if its down or not running already. I tried adding below entry in cron tab but it does not work24 07 * * * pgrep -f test.py || nohup python /home/dp/script/test.py & > /var/tmp/test.outtest.py works fine if i runpgrep -f test.py || nohup python /home/dp/script/test.py & > /var/tmp/test.outmanually and it also works in crontab if i remove pgrep -f test.py || from my crontab and just keep24 07 * * * nohup python /home/dp/script/test.py & > /var/tmp/test.outAny idea why crontab does not work if i add pgrep -f? is there any other way i can run test.py just one time to avoid multiple running processes of test.py?
Thanks,
Deepak
|
crontab to run python file if not running already
|
You should use thecrontypethat is built in to puppet.file { '/puppet/pls.sh':
content => "#!/bin/sh\necho \"Hello World\"\nls -ltr /etc/puppet > /puppet/dump.txt",
mode => 0755,
}
cron { 'helloworld':
command => "/puppet/pls.sh",
user => root,
hour => '*',
minute => '*/5',
require => File['/puppet/pls.sh']
}........
|
I want to add 1 cron job in to the machine that will run every 5 minutes, for that I am using this manifest:class cron_job{
file{"puppet_ls":
path => "/puppet/pls.sh",
ensure => present,
content => "#!/bin/sh\necho \"Hello World\"\nls -ltr /etc/puppet > /puppet/dump.txt"
}
file { "my_ls.cron":
path => "/etc/cron.d/my_ls.cron",
ensure => present,
owner => "root",
group => "root",
mode => 0644,
require => File["puppet_ls"],
content => "*/1 * * * * /puppet/pls.sh\n";
}
}So this manifest do 2 things,It makes a file /puupet/pls.sh with the content specifie, that is actually running the commandls-ltr /etc/puppetIt makes an entry in the form of cron job for inside daily category and if you see the last line i.e* * * * /puppet/pls.sh\n, says that run after every 1 minute(for testing I kept one)But I am not getting the filedump.txtinside/puppet/Also if I runs,sh /puppet/pls.sh, it runs perfectly and generates the dump.I am unable to understand where is the glitch..
:(Please shed some light..Thanks
Ankur
|
Cron job not running created by puppet
|
I'm new to whenever as well, but i think that just runningwheneverjust shows you what the cron job that is created will look like. In order to actually write the cron job (to make it active), you need to execute:whenever -wThis will get you a full list of options:whenever -h
|
I have not used cron before, so I can't be sure that I did this right. The tasks I want to be automated don't seem to be running. I did these steps in the terminal:sudo gem install wheneverchange to the application directorywheneverize . (this created the file schedule.rb)I added this code to schedule.rb:every 10.minutes do
runner "User.vote", environment => "development"
end
every :hour do
runner "Digest.rss", :environment => "development"
endI added this code to deploy.rb:after "deploy:symlink", "deploy:update_crontab"
namespace :deploy do
desc "Update the crontab file"
task :update_crontab, :roles => :db do
run "cd #{current_path} && whenever --update-crontab #{application}"
end
endI did this in the terminal: wheneverIt returned:@hourly cd /Users/RedApple/S && script/runner -e development 'Digest.rss'
0,10,20,30,40,50 * * * * cd /Users/RedApple/S && script/runner -e development 'User.vote'Running these commands individually in the terminal works:script/runner -e development 'Digest.rss'
script/runner -e development 'User.vote'Now running a local server in development mode, script/server, I don't see any evidence that the code is actually being run. Is there some step that I didn't do? No guides for "Whenever" show anything else than what I have done.
|
Help with the "Whenever" gem in Ruby for cron tasks
|
Regarding cron seconds support, there appears to be some difference in the syntax used between theUNIX cron toolandCRON Expression. According to theQuartz CRON Documentationhowever, seconds is supported.Given the above, I would create three CRON Triggers to handle:2:15:00 - 2:59:593:00:00 - 4:59:595:00:00 - 5:19:59Which would translate to (I believe):* 15/1 2 * * ?* * 3-5 * * ?* 0-20 5 * * ?
|
I am using Quartz.Net to schedule my jobs in my application. I was just wondering if a CRON expression for the following scenario can be built:Every second between 2:15AM and 5:20AM
|
Cron expression for a time range
|
If you dorequire('../includes/common.php'), the path is traversed relative to thecurrent working directory.If you dorequire('common.php'), the file is searched in the include path, and in the directory of the script which calls the require().To solve this, first change directory in your crontab:cd /home/fini7463/public_html; php -f cronjob.php
|
i run a cron job every night, but for some reason, it is saying that the file i try to include is inexistant:Warning: require(../includes/common.php): failed to open stream: No such file or directory in /home/fini7463/public_html/cron/journeyNotifications.php on line 2
Fatal error: require(): Failed opening required '../includes/common.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/fini7463/public_html/cron/journeyNotifications.php on line 2here's the code:set_include_path('/home/fini7463/public_html/includes/');
require 'common.php';the file 'common.php' is located as followspublic_html => cron => journeyNotifications.php
=> includes => common.phpi even set the include path (as shown in the code), but i am still getting this error. what could the problem be?thanks!
|
PHP Cron Job: Including file not working?
|
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.