Re: Demoting master to slave without an rsync...is it safe?

Yes, but I don't understand at all where this conversation is going, or how
it's relevant. I have fail-over working perfectly fine.....my original
question was: is it safe to bring a former master back up as a slave without
doing a base-backup first? (using recovery_target_timeline='latest')

On Wed, Sep 7, 2011 at 6:28 AM, Alex Lai <alai(at)sesda2(dot)com> wrote:

> Chris Redekop wrote:
>
>>
>>
>> I have two questions:
>> (1) Did you set recovery_target_timeline='**latest' in both master
>> and slave?
>>
>>
>> Yes....but it's in recovery.conf so it only really applies to whichever
>> server is currently the slave...
>>
>> (2) Did you make any changes after promote the slave to be master?
>>
>>
>> Yes, some....however I'm not sure I've done enough changes to have the
>> slave rotate+archive an xlog before bringing the old master back up as a
>> slave....I would assume that wouldn't make a difference but it's something
>> to test I guess....
>>
> Did you set trigger_file in recovery? That is the required step to switch
> slave to master. I set my log rotate+archive to 15 minutes. When I touch
> fail over file, it mostly like force it to rotate+archive.
> --
> Best regards,
>
>
> Alex Lai
> OMI SIPS DBA ADNET Systems , Inc. 7515 Mission Drive, Suite A100 Lanham, MD
> 20706 301-352-4657 (phone) 301-352-0437 (fax) alai(at)sesda2(dot)com
>
>