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From "Andrey Pustovetov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ZOOKEEPER-2343) Zookeeper 3.5.1 failed to deploy into the kubernetes
Date Fri, 24 Nov 2017 14:30:00 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-2343?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16265331#comment-16265331
] 

Andrey Pustovetov commented on ZOOKEEPER-2343:
----------------------------------------------

I tested the same configuration using ZooKeeper 3.5.4-beta-SNAPSHOT and the problem is not
reproduced. 
ZOOKEEPER-2819 introduced new behavior for {{reconfigEnabled}} flag and it allows to resolve
your issue.

> Zookeeper 3.5.1 failed to deploy into the kubernetes
> ----------------------------------------------------
>
>                 Key: ZOOKEEPER-2343
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2343
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: quorum
>    Affects Versions: 3.5.1
>         Environment: CentOS Linux release 7.1.1503 (Core)
> openjdk version "1.8.0_65"
> OpenJDK Runtime Environment (build 1.8.0_65-b17)
> OpenJDK 64-Bit Server VM (build 25.65-b01, mixed mode)
> zookeeper: 3.5.1-alpha-1693007
>            Reporter: cheyang
>             Fix For: 3.5.1
>
>
> I'd like to setup 3-nodes zookeeper cluster with version 3.5.1. Because the network model
of kubernetes is that pod and service has different ip address.  In order to deploy it into
kubernetes, I have to make zookeeper pods itself to be 0.0.0.0, so it can be started correctly.
the configuration as below:
> zk1: zoo.cfg
>     standaloneEnabled=false
>     dynamicConfigFile=/opt/zookeeper/conf/zoo.cfg.dynamic
> zoo.cfg.dynamic
>     server.1=0.0.0.0:2888:3888:participant;2181
>     server.2=10.62.56.192:2888:3888:participant;2181
>     server.3=10.62.56.193:2888:3888:participant;2181
> zk2: zoo.cfg
>     standaloneEnabled=false
>     dynamicConfigFile=/opt/zookeeper/conf/zoo.cfg.dynamic
> zoo.cfg.dynamic
>     server.1=10.62.56.191:2888:3888:participant;2181
>     server.2=0.0.0.0:2888:3888:participant;2181
>     server.3=10.62.56.193:2888:3888:participant;2181
> zk3: zoo.cfg
>     standaloneEnabled=false
>     dynamicConfigFile=/opt/zookeeper/conf/zoo.cfg.dynamic
> zoo.cfg.dynamic
>    server.1=10.62.56.191:2888:3888:participant;2181
>    server.2=10.62.56.192:2888:3888:participant;2181
>    server.3=0.0.0.0:2888:3888:participant;218
> The result is that:
> 1. Looks like the election is successful. a new dynamic file is generated in every node:/opt/zookeeper/conf/zoo.cfg.dynamic.100000000
> like below
> server.1=10.62.56.191:2888:3888:participant;0.0.0.0:2181
> server.2=0.0.0.0:2888:3888:participant;0.0.0.0:2181
> server.3=10.62.56.193:2888:3888:participant;0.0.0.0:2181
> 2. But the cluster doesn't really work, I saw the errors:
> 0:0:2181)(secure=disabled):Learner@273] - Unexpected exception, tries=3, remaining init
limit=16997, connecting to /0.0.0.0:2888
> java.net.ConnectException: Connection refused
>         at java.net.PlainSocketImpl.socketConnect(Native Method)
>         at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
>         at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:204)
>         at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
>         at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
>         at java.net.Socket.connect(Socket.java:589)
>         at org.apache.zookeeper.server.quorum.Learner.sockConnect(Learner.java:227)
>         at org.apache.zookeeper.server.quorum.Learner.connectToLeader(Learner.java:256)
>         at org.apache.zookeeper.server.quorum.Follower.followLeader(Follower.java:74)
>         at org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:1064)
> 2015-12-15 04:35:00,403 [myid:1] - INFO  
> 2015-12-15 04:35:00,585 [myid:1] - INFO  [QuorumPeer[myid=1](plain=/0:0:0:0:0:0:0:0:2181)(secure=disabled):Follower@198]
- shutdown called
> java.lang.Exception: shutdown Follower
>         at org.apache.zookeeper.server.quorum.Follower.shutdown(Follower.java:198)
>         at org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:1068)



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