anchor.diff:  * Access logs: `/var/log/nginx/access.log`
   * Error logs: `/var/log/nginx/error.log`
   
  -**System Diagnostics**
  -
  -In order to get some support, the first thing we would require is some information about your deployment. We have created a `diagnostic` command for that effect:
  +=== System Diagnostics
  +
  +If support is needed, we may require some additional detailed information about your deployment. We have created a `diagnostic` command for this purpose. to run this command:
   
   ```
   # Login as 'tomcat'
   > sudo su - tomcat
   #
  -# Assume a 'bob/lazar' tenant
  -# Assume some credentials 'admin/password'
  +# Set your access credentials. This example
  +#   assumes the default credentials are used:
   #
   > kpm  diagnostic \
     --killbill-credentials=admin password \
  
positive.code: 
  The `Let's Encrypt` certifcates are only valid 90 days and will therefore neeed to be renewed. `certbot` will create a cron entry under `/etc/cron.d/certbot` to make this process transparent.
  
  === Kill Bill
  
  Kill Bill global properties are defined in `/var/lib/killbill/config/killbill.properties`. For example, this is where you can change the MySQL credentials. Take a look at our https://docs.killbill.io/latest/userguide_configuration.html[configuration guide] for more details.
  
  This is also where you can change the default Kill Bill admin credentials: specify `org.killbill.security.shiroResourcePath=/var/lib/killbill/config/shiro.ini` and create the `shiro.ini` file accordingly (see our https://docs.killbill.io/latest/user_management.html[RBAC guide] for more details).
  
  == TroubleShooting Section
  
  
  After launching the EC2 instance, the full stack should come up, with all services enabled and running, that is:
  
negative.code:   --database-host=127.0.0.1:3306
  
  ...
  The diagnostic data is exported under /tmp/killbill-diagnostics-20200213-23204-u93ah5/killbill-diagnostics-02-13-20.zip 
  ```
  
  === Databases
  
  To access the mysql (MariaDB) databases, you can use the following command:
  
  ```
  mysql -u root -proot
  ```
  
  This enables interactive access to the database manager. There is one `killbill` and one `kaui` database created and used by the respective applications. To verify the tables in each database, you can type:
  
  ```
  use killbill;
  show tables;
  ```
  or
  
  ```
  use kaui;
  show tables;
  ```
  
  Standard SQL commands can be used to explore or manipulate the tables. Be sure you know what you are doing, or the databases may become corrupted!
  
  To exit the mysql interactive mode, type `exit`.
  
  
  **Nginx**
  