[jira] [Updated] (ZOOKEEPER-4276) Serving only with secureClientPort fails

["Lars Francke (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ZOOKEEPER-4276?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lars Francke updated ZOOKEEPER-4276:
------------------------------------
    Affects Version/s: 3.8.0

> Serving only with secureClientPort fails
> ----------------------------------------
>
>                 Key: ZOOKEEPER-4276
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4276
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: server
>    Affects Versions: 3.7.0, 3.5.8, 3.6.2, 3.8.0
>            Reporter: Kei Kori
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 2h
>  Remaining Estimate: 0h
>
> clientPort in zoo.cfg is forcefully complemented from client address by QuorumPeerConfig#setupClientPort even though secureClientPort is set and matches with client address' port.
> Because of this behavior, in case rolling update with replacing clientPort to secureClientPort in the same port number following [Upgrading existing non-TLS cluster with no downtime|https://zookeeper.apache.org/doc/r3.7.0/zookeeperAdmin.html#Upgrading+existing+nonTLS+cluster] conflicts and gets errors below.
> {code}
> 2021-03-29 23:21:58,638 - INFO  [main:NettyServerCnxnFactory@590] - binding to port /0.0.0.0:2281
> 2021-03-29 23:21:58,748 - INFO  [main:NettyServerCnxnFactory@595] - bound to port 2281
> 2021-03-29 23:21:58,749 - INFO  [main:NettyServerCnxnFactory@590] - binding to port 0.0.0.0/0.0.0.0:2281
> 2021-03-29 23:21:58,753 - ERROR [main:QuorumPeerMain@101] - Unexpected exception, exiting abnormally
> java.net.BindException: Address already in use
> {code}
> QuorumPeerConfig#setupClientPort should complement only when both clientPort and secureClientPort are empty, and allow serving zookeeper server only with secure client port.



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