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From "ken huang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ZOOKEEPER-2910) zookeeper listening on unknown random port
Date Sun, 22 Oct 2017 02:12:00 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-2910?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16214154#comment-16214154
] 

ken huang commented on ZOOKEEPER-2910:
--------------------------------------

As you say, you running three servers on the single machine(17/18/19), there should be 9 ports
listened on the single machine as followed:
{code:java}
for zk17: 2181 3181 4181
for zk18: 2182 3182 4182
for zk19: 2183 3183 4183
{code}
But i just fond zk19 is fine, zk18 and zk17 missing the port used for followers use to connect
to the leader. 
I'm not sure whether my understanding is correct.


> zookeeper listening on unknown random port
> ------------------------------------------
>
>                 Key: ZOOKEEPER-2910
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2910
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: server
>    Affects Versions: 3.4.8
>         Environment: CentOS 7
> Zookeeper 3.4.8
> JDK 1.8.0_111
>            Reporter: ken huang
>            Assignee: Patrick Hunt
>
> when zookeeper start, it will listen on three port:
>     2181 for client connnect
>     3888 for leader election
>     random for what ?
> three are three port config in zoo.cfg, 2181、2888、3888, but no 2888 listened on.




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