| From: | Jeff Janes <jeff(dot)janes(at)gmail(dot)com> |
|---|---|
| To: | Stephen Frost <sfrost(at)snowman(dot)net> |
| Cc: | Andres Freund <andres(at)2ndquadrant(dot)com>, "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Kevin Grittner <kgrittn(at)ymail(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Rajeev rastogi <rajeev(dot)rastogi(at)huawei(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Standalone synchronous master |
| Date: | 2014-01-09 00:03:55 |
| Message-ID: | CAMkU=1zd=jwUmu+wD9gPum3mJD6_27us7AfM+xPF7AN1t1Q6EA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Wed, Jan 8, 2014 at 2:56 PM, Stephen Frost <sfrost(at)snowman(dot)net> wrote:
> * Andres Freund (andres(at)2ndquadrant(dot)com) wrote:
> > That's why you should configure a second standby as another (candidate)
> > synchronous replica, also listed in synchronous_standby_names.
>
> Perhaps we should stress in the docs that this is, in fact, the *only*
> reasonable mode in which to run with sync rep on?
I don't think it is the only reasonable way to run it. Most of the time
that the master can't communicate with rep1, it is because of a network
problem. So, the master probably can't talk to rep2 either, and adding the
second one doesn't really get you all that much in terms of availability.
Cheers,
Jeff
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