title: zookeeper on ec2 cannot run
body: <p>Everyone, 
  I am recently setting up zookeeper on ec2
  I have followed the manual of ec2, but it still shows up the error:</p>
  
  <pre><code>root@ip-172-31-15-65:/home/yjiang/zookeeper-3.4.5/bin# ./zkServer.sh status
  JMX enabled by default
  Using config: /home/yjiang/zookeeper-3.4.5/bin/../conf/zoo.cfg
  Error contacting service. It is probably not running.
  </code></pre>
  
  <p>But the instance is running in the background.
  Then when I use the ./zkCli.sh –server server-ip:2181 command, it shows below</p>
  
  <pre><code>root@ip-172-31-15-68:/home/yjiang/zookeeper-3.4.5/bin# ./zkCli.sh -server ec2-54-213-208-202.us-west-2.compute.amazonaws.com:2181
  Connecting to ec2-54-213-208-202.us-west-2.compute.amazonaws.com:2181
  2013-08-31 06:53:05,568 [myid:] - INFO  [main:Environment@100] - Client environment:zookeeper.version=3.4.5-1392090, built on 09/30/2012 17:52 GMT
  2013-08-31 06:53:05,579 [myid:] - INFO  [main:Environment@100] - Client environment:host.name=ip-172-31-15-68.us-west-2.compute.internal
  2013-08-31 06:53:05,580 [myid:] - INFO  [main:Environment@100] - Client environment:java.version=1.7.0_25
  2013-08-31 06:53:05,580 [myid:] - INFO  [main:Environment@100] - Client environment:java.vendor=Oracle Corporation
  2013-08-31 06:53:05,581 [myid:] - INFO  [main:Environment@100] - Client environment:java.home=/usr/lib/jvm/java-7-oracle/jre
  2013-08-31 06:53:05,582 [myid:] - INFO  [main:Environment@100] - Client environment:java.class.path=/home/yjiang/zookeeper-3.4.5/bin/../build/classes:/home/yjiang/zookeeper-3.4.5/bin/../build/lib/*.jar:/home/yjiang/zookeeper-3.4.5/bin/../lib/slf4j-log4j12-1.6.1.jar:/home/yjiang/zookeeper-3.4.5/bin/../lib/slf4j-api-1.6.1.jar:/home/yjiang/zookeeper-3.4.5/bin/../lib/netty-3.2.2.Final.jar:/home/yjiang/zookeeper-3.4.5/bin/../lib/log4j-1.2.15.jar:/home/yjiang/zookeeper-3.4.5/bin/../lib/jline-0.9.94.jar:/home/yjiang/zookeeper-3.4.5/bin/../zookeeper-3.4.5.jar:/home/yjiang/zookeeper-3.4.5/bin/../src/java/lib/*.jar:/home/yjiang/zookeeper-3.4.5/bin/../conf:/usr/lib/jvm/java-7-oracle/lib
  2013-08-31 06:53:05,583 [myid:] - INFO  [main:Environment@100] - Client environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
  2013-08-31 06:53:05,584 [myid:] - INFO  [main:Environment@100] - Client environment:java.io.tmpdir=/tmp
  2013-08-31 06:53:05,584 [myid:] - INFO  [main:Environment@100] - Client environment:java.compiler=&lt;NA&gt;
  2013-08-31 06:53:05,585 [myid:] - INFO  [main:Environment@100] - Client environment:os.name=Linux
  2013-08-31 06:53:05,586 [myid:] - INFO  [main:Environment@100] - Client environment:os.arch=amd64
  2013-08-31 06:53:05,586 [myid:] - INFO  [main:Environment@100] - Client environment:os.version=3.2.0-40-virtual
  2013-08-31 06:53:05,587 [myid:] - INFO  [main:Environment@100] - Client environment:user.name=root
  2013-08-31 06:53:05,588 [myid:] - INFO  [main:Environment@100] - Client environment:user.home=/root
  2013-08-31 06:53:05,588 [myid:] - INFO  [main:Environment@100] - Client environment:user.dir=/home/yjiang/zookeeper-3.4.5/bin
  2013-08-31 06:53:05,592 [myid:] - INFO  [main:ZooKeeper@438] - Initiating client connection, connectString=ec2-54-213-208-202.us-west-2.compute.amazonaws.com:2181 sessionTimeout=30000 watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@3b8a9e64
  Welcome to ZooKeeper!
  2013-08-31 06:53:05,695 [myid:] - INFO  [main-SendThread(ec2-54-213-208-202.us-west-2.compute.amazonaws.com:2181):ClientCnxn$SendThread@966] - Opening socket connection to server ec2-54-213-208-202.us-west-2.compute.amazonaws.com/54.213.208.202:2181. Will not attempt to authenticate using SASL (unknown error)
  JLine support is enabled
  [zk: ec2-54-213-208-202.us-west-2.compute.amazonaws.com:2181(CONNECTING) 0] 2013-08-31 06:53:35,756 [myid:] - INFO  [main-SendThread(ec2-54-213-208-202.us-west-2.compute.amazonaws.com:2181):ClientCnxn$SendThread@1083] - Client session timed out, have not heard from server in 30097ms for sessionid 0x0, closing socket connection and attempting reconnect
  2013-08-31 06:53:36,860 [myid:] - INFO  [main-SendThread(ec2-54-213-208-202.us-west-2.compute.amazonaws.com:2181):ClientCnxn$SendThread@966] - Opening socket connection to server ec2-54-213-208-202.us-west-2.compute.amazonaws.com/54.213.208.202:2181. Will not attempt to authenticate using SASL (unknown error)
  </code></pre>
  
  <p>It seems take forever to connect.</p>
  
  <p>I did setup everything according to docs, I don’t know what I did wrong.
  The following is my conf file, and the myid is in the dataDir folder</p>
  
  <pre><code># The number of milliseconds of each tick
  tickTime=2000
  # The number of ticks that the initial
  # synchronization phase can take
  initLimit=10
  # The number of ticks that can pass between
  # sending a request and getting an acknowledgement
  syncLimit=5
  # the directory where the snapshot is stored.
  # do not use /tmp for storage, /tmp here is just
  # example sakes.
  dataDir=/home/yjiang/zookeeper/data/zk1
  # the port at which the clients will connect
  clientPort=2181
  server.1=localhost:2888:3888
  server.2=ec2-54-213-208-202.us-west-2.compute.amazonaws.com:2888:3888
  #server.3=ec2-54-213-208-225.us-west-2.compute.amazonaws.com:2888:3888
  #server.4=ip-172-31-15-66.us-west-2.compute.internal:3888
  #server.5=ip-172-31-26-18.us-west-2.compute.internal:3888
  #
  # Be sure to read the maintenance section of the
  # administrator guide before turning on autopurge.
  #
  # http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
  #
  # The number of snapshots to retain in dataDir
  #autopurge.snapRetainCount=3
  # Purge task interval in hours
  # Set to "0" to disable auto purge feature
  #autopurge.purgeInterval=1
  </code></pre>
  
  <p>FYI I have added the port 2181, 2888 and 3888 to my firewalls in all machines. I even disabled the firewall in all machines, it still doesn’t work. But there is never any problem in my local with same configuration approach.
  Please help me
  Thanks a lot.</p>