[ClusterLabs] Pacemaker Fail Master-Master State

[İsmet BALAT]

Sorry, I am in +3utc and was sleeping. I will try first fix node, then
start cluster. Thank you

On 21 Feb 2021 Sun at 00:00 damiano giuliani <damianogiuliani87 at gmail.com>
wrote:

> resources configured in a master/slave mode
> If you got 2 masters something is not working right. You should never have
> 2 node in master.
> Disable pacemaker and corosync services to autostart on both nodes
> systemctl disable corosync
> Systemctl disable pacemaker
>
> You can start the faulty node using pcs cli:
> pcs cluster start
>
> You can start the whole cluster using
> pcs cluster start --all
>
> First of all configure a fencing mechanism to make the cluster consistent.
> Its mandatory.
>
>
>
> On Sat, 20 Feb 2021, 21:47 İsmet BALAT, <bcalbatros at gmail.com> wrote:
>
>> I am not using fence. If I disable pacemaker,how node join cluster (for
>> first example in video - master/slave changing)? So I need a check script
>> for fault states :(
>>
>> And thank you for reply
>>
>> On 20 Feb 2021 Sat at 23:40 damiano giuliani <damianogiuliani87 at gmail.com>
>> wrote:
>>
>>> Hi,
>>>
>>> Have you correcly configure a working fencing mechanism?without it you
>>> cant rely on a safe and consistent environment.
>>> My suggestion is to disable the autostart services (and so the autojoin
>>> into the cluster) on both nodes.
>>>  if there is a fault you have to investigate before you rejoin the old
>>> fault master node.
>>> Pacemaker (and paf if u are using it) as far i know,  doesnt support the
>>> autoheal of the old master, so you should resync or pg_rewind eveythime
>>> there is a fault.
>>>
>>>
>>>
>>> On Sat, 20 Feb 2021, 19:03 İsmet BALAT, <bcalbatros at gmail.com> wrote:
>>>
>>>> I am using Pacemaker with Centos 8 and Postgresql 12. Failover
>>>> master/slave states successfully run. But if all nodes are masters,
>>>> pacemaker can't repair its unlikely send command 'pcs resources cleanup'.
>>>> Wheras I set 60s in resource config. How can I fix it?
>>>>
>>>> StackOverFlow link:
>>>> https://stackoverflow.com/questions/66292304/pacemaker-postgresql-master-master-state
>>>>
>>>> Thanks
>>>>
>>>> İsmet BALAT
>>>>
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