Re: Interrupted streaming replication

On 12/07/2015 05:50 AM, Tony Nelson wrote:
>
>
>> -----Original Message-----
>> Tony Nelson <tnelson(at)starpoint(dot)com> wrote:
>>
>>> 2015-12-07 08:24:50 EST FATAL: requested WAL segment
>>> 00000001000000890000002C has already been removed
>>>
>>>
>>>
>>> Can I simply copy the file from my archive directory back to the WAL
>> directory?
>>
>> I'm afraid that won't work, because of the master knows nothing about this
>> copy and can't stream its content.
>>
>> Maybe you can create/update your recovery.conf, see restore_command.
>>
>>
>> for the future: increase wal_keep_segments, or better: use replication slots
>> (since 9.4 a really good feature to prevent such errors).
>>
>>
>
> Thank you. I'm still running 9.1, but I'll look into 9.4. Fortunately my database is small so doing a new base backup is not the end of the world. It's been a long time since I've set this up, so I'm going to have to go through a refresher course on exactly what I need to do.

I have not done it, but is seems to me given that you have an WAL
archive you could enable archive recovery on the stalled slave and
restart it:

http://www.postgresql.org/docs/9.1/interactive/archive-recovery-settings.html

>
> Thanks for your help.
>
> Tony
>
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--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com