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issue with 9.0 1 slave becomes master with new timeline

From: Dragos Valentin Moinescu <dragos(dot)moinescu(at)gmail(dot)com>
To: pgsql-admin(at)postgresql(dot)org
Subject: issue with 9.0 1 slave becomes master with new timeline
Date: 2010-11-11 11:26:46
Message-ID: AANLkTi=ajKCSuUU8wh7OnGPg9tx96gU-pBXM2wfdF5mu@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-admin
Hello,

I have an issue with the following architecture:
1. master
3. slaves with streaming replication (used for backup and read-only queries)

When the master goes offline, 1 of the slaves must become master. Thus
I am creating trigger_file and the slave becomes the master.

The problem is that the other 2 slaves are using timeline 1, when the
new master is in a different universe.

How can I easile migrate the 2 slaves on the new master without
creating a new base backup (which unfortunately takes too long as the
databases contain arround 200GB)?

Shoud I use pg_resetxlog? If yes, what is the command?

The problem is that the slaves are used for reading and I really need
to have them synced with the new master in matter of seconds not
minutes (the slaves are distributed globally - 2 in us, 1 in europe, 1
in asia).

Thank you.

PS:
you postgresql guys did a magnificent job with 9.0 (streaming and
performance). you guys rock.


-- 
Best regards,
Dragos Moinescu

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Next:From: Kevin GrittnerDate: 2010-11-11 15:08:35
Subject: Re: issue with 9.0 1 slave becomes master with new timeline
Previous:From: tsouplDate: 2010-11-11 08:04:51
Subject: Re: PG HA solution using DBRD

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