CODEWITHSUNDEEP
amazon-web-servicesportapache-zookeeper
Mithun Kalan
Mithun Kalan

Reputation: 410

Zookeeper unable to listen on port 3888

I've got 3 servers on aws. each with open jdk 7 and zookeeper 3.4.6 all have unique elastic ip's. each conf/zoo.cfg has

then i start it with ./zkServer.sh start (says STARTED) and the zookeeper.out says

2015-01-14 09:27:55,919 [myid:1] - INFO  [Thread-1:QuorumCnxManager$Listener@504] - My election bind port: /server1ipaddress:3888
2015-01-14 09:27:55,920 [myid:1] - ERROR [/server1ipaddress:3888:QuorumCnxManager$Listener@517] - Exception while listening
    java.net.BindException: Cannot assign requested address
            at java.net.PlainSocketImpl.socketBind(Native Method)
            at java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:376)
            at java.net.ServerSocket.bind(ServerSocket.java:376)
            at java.net.ServerSocket.bind(ServerSocket.java:330)
            at org.apache.zookeeper.server.quorum.QuorumCnxManager$Listener.run(QuorumCnxManager.java:507)

So it cant open the port. i've eventually opened all ports on aws security to rule that out.

netstat shows that nothing is blocking 2888 and 3888

i've even tried this with all 3 servers having zookeeper started. whats going on? how do i get those ports open for use.

Upvotes: 11

Views: 15400

Answers (2)

Rohit
Rohit

Reputation: 171

Cross verify myid's on all the nodes based on the zoo.cfg. The same issue happened to me, upon looking myid pattern got changed on 2 of the nodes.

Upvotes: 1

Irek Nazmiev
Irek Nazmiev

Reputation: 129

Your problem is answered here.

In a few words: on each ZooKeeper machine, at your conf/zoo.cfg, you have to set the current server's IP to 0.0.0.0. For example: if you are currently on server1, the config should contain the following lines:

server.1=0.0.0.0:2888:3888
server.2=server2:2888:3888
server.3=server3:2888:3888

This step solved the problem in my case.

Upvotes: 12

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