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Date: Tue, 18 Feb 2014 14:41:47 +0100
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Subject: Re: how to fix messed up servers id
From: German Blanco <german.blanco.blanco@gmail.com>
To: "user@zookeeper.apache.org" <user@zookeeper.apache.org>
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For this step:
"Set a different id in the myid file of server 0 (the one that is down),
restart it, verify that it joins the quorum." any value that is not used
should do, e.g. 3, 4, 5, 1231 ...


On Tue, Feb 18, 2014 at 12:04 PM, German Blanco <
german.blanco.blanco@gmail.com> wrote:

> Hello!
> Set a different id in the myid file of server 0 (the one that is down),
> restart it, verify that it joins the quorum.
> If it joins the quorum, set the myid value in server 1 to one, restart it,
> verify that it joins the quorum.
> If it joins the quorum, update again the myid file of server 0, this time
> to the correct 0 value. Restart, verify that it all works.
>
> If any of the steps fails, stop and think it all over again.
>
> Good luck.
>
>
> On Tuesday, February 18, 2014, Marcin Cabaj <marcin.cabaj@datasift.com>
> wrote:
>
>> Hi all,
>>
>> My ZooKeeper ensemble contains 3 servers, unfortunately somehow servers
>> ids
>> have been messed up.
>>
>> zoo.cfg on all servers:
>> server.0=zoo0:2888:3888
>> server.1=zoo1:2888:3888
>> server.2=zoo2:2888:3888
>>
>> but:
>> on ZOO0:
>> [xxx@zoo0]$ cat /var/zookeeper/myid
>> 1
>> [xxx@zoo0]$ echo conf | nc localhost 2181
>> This ZooKeeper instance is not currently serving requests
>>
>> on ZOO1:
>> [xxx@zoo1] $ cat /var/zookeeper/myid
>> 0
>> [xxx@zoo1:~]$ echo conf | nc localhost 2181 | grep serverId
>>
>> serverId=0
>>
>> on ZOO2:
>> [xxx@zoo2:~]$ cat /var/zookeeper/myid
>> 2
>> [xxx@zoo2:~]$ echo conf | nc localhost 2181 | grep serverId
>> serverId=2
>>
>> How to fix this without shutting down whole ensemble?
>> Currently I have connections established to ZOO1 and ZOO2.
>> ZOO0 is listening on 2181 but doesn't accept connections.
>> ZOO2 is the leader.
>>
>> Zookeeper version: 3.3.5-cdh3u5--1, built on 10/06/2012 01:58 GMT
>>
>> Cheers
>>
>

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