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From "Patrick Hunt (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (ZOOKEEPER-2910) zookeeper listening on unknown random port
Date Sat, 30 Sep 2017 20:28:00 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-2910?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16187200#comment-16187200
] 

Patrick Hunt edited comment on ZOOKEEPER-2910 at 9/30/17 8:27 PM:
------------------------------------------------------------------

Not sure what you mean by "random". Could you elaborate? Perhaps show what is leading to you
believe this?

I ran 3.4.10/jdk8 on ubuntu 17.04 and see the following:

{noformat}
$ sudo netstat -anp
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program
name
tcp        0      0 0.0.0.0:2181            0.0.0.0:*               LISTEN      17/java
tcp        0      0 0.0.0.0:2182            0.0.0.0:*               LISTEN      18/java
tcp        0      0 0.0.0.0:2183            0.0.0.0:*               LISTEN      19/java
tcp        0      0 127.0.0.1:3183          0.0.0.0:*               LISTEN      19/java
tcp        0      0 127.0.0.1:4181          0.0.0.0:*               LISTEN      17/java
tcp        0      0 127.0.0.1:4182          0.0.0.0:*               LISTEN      18/java
tcp        0      0 127.0.0.1:4183          0.0.0.0:*               LISTEN      19/java
tcp        0      0 127.0.0.1:58712         127.0.0.1:4181          ESTABLISHED 18/java
tcp        0      0 127.0.0.1:4181          127.0.0.1:58708         ESTABLISHED 17/java
tcp        0      0 127.0.0.1:3183          127.0.0.1:46588         ESTABLISHED 19/java
tcp        0      0 127.0.0.1:3183          127.0.0.1:46590         ESTABLISHED 19/java
tcp        0      0 127.0.0.1:4182          127.0.0.1:32794         ESTABLISHED 18/java
tcp        0      0 127.0.0.1:4181          127.0.0.1:58712         ESTABLISHED 17/java
tcp        0      0 127.0.0.1:58708         127.0.0.1:4181          ESTABLISHED 19/java
tcp        0      0 127.0.0.1:32794         127.0.0.1:4182          ESTABLISHED 19/java
tcp        0      0 127.0.0.1:46588         127.0.0.1:3183          ESTABLISHED 18/java
tcp        0      0 127.0.0.1:46590         127.0.0.1:3183          ESTABLISHED 17/java
{noformat}

my config is

{noformat}
clientPort=2181
server.1=localhost:3181:4181
server.2=localhost:3182:4182
server.3=localhost:3183:4183
{noformat}

This all looks fine to me. Nothing "random" that I noticed.



was (Author: phunt):
Not sure what you mean by "random". Could you elaborate? Perhaps show what is leading to you
believe this?

I ran 3.4.10/jdk8 on ubuntu 17.04 and see the following:

{noformat}
$ sudo netstat -anp
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program
name
tcp        0      0 0.0.0.0:2181            0.0.0.0:*               LISTEN      17/java
tcp        0      0 0.0.0.0:2182            0.0.0.0:*               LISTEN      18/java
tcp        0      0 0.0.0.0:2183            0.0.0.0:*               LISTEN      19/java
tcp        0      0 127.0.0.1:3183          0.0.0.0:*               LISTEN      19/java
tcp        0      0 127.0.0.1:4181          0.0.0.0:*               LISTEN      17/java
tcp        0      0 127.0.0.1:4182          0.0.0.0:*               LISTEN      18/java
tcp        0      0 127.0.0.1:4183          0.0.0.0:*               LISTEN      19/java
tcp        0      0 127.0.0.1:58712         127.0.0.1:4181          ESTABLISHED 18/java
tcp        0      0 127.0.0.1:4181          127.0.0.1:58708         ESTABLISHED 17/java
tcp        0      0 127.0.0.1:3183          127.0.0.1:46588         ESTABLISHED 19/java
tcp        0      0 127.0.0.1:3183          127.0.0.1:46590         ESTABLISHED 19/java
tcp        0      0 127.0.0.1:4182          127.0.0.1:32794         ESTABLISHED 18/java
tcp        0      0 127.0.0.1:4181          127.0.0.1:58712         ESTABLISHED 17/java
tcp        0      0 127.0.0.1:58708         127.0.0.1:4181          ESTABLISHED 19/java
tcp        0      0 127.0.0.1:32794         127.0.0.1:4182          ESTABLISHED 19/java
tcp        0      0 127.0.0.1:46588         127.0.0.1:3183          ESTABLISHED 18/java
tcp        0      0 127.0.0.1:46590         127.0.0.1:3183          ESTABLISHED 17/java
{noformat}

my config is

{noformat}
clientPort=2181
server.1=localhost:3181:4181
server.2=localhost:3182:4182
server.3=localhost:3183:4183
{noformat}


> 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
>
> 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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