Hi Michael Vallaly 2012/6/6 Michael Vallaly <pacema...@nolatency.com>:
> > Takatoshi MATSUO, > > Have you made any further progress on the OCF RA script for Postgresql > 9.1 streaming replication? No, I haven't. > I would like to setup a HA cluster here > explicitly for Postgresql 9.1, but was having a few problems setting up > the examples on your github wiki page. > > Are you currently able to use you OCF script reliably in a Pacemaker > cluster or are you blocked/waiting for Pacemaker 1.1.8 to support the > Multi-State resource Master -> Stopped state support? I think we can use it reliably. It dosen't need supporting Master->Stopped. You may see an unexpected failed-actions(monitor) after demoting pgsql without this support. But I think it dosen't really matter. > Thanks for your work and time on the RA OCF script. > > Feel free to contact me off list as well if anyone else has solved > this problem with Pacemaker differently or this isn't exactly the right > forum. The RA belongs to Linux-HA projects, so I think it's better to discuss or ask it in linux-ha or linux-ha-dev mailing lists. Thanks, Takatoshi MATSUO > -Mike > > On Fri, 9 Mar 2012 10:42:56 +0900 > Takatoshi MATSUO <matsuo....@gmail.com> wrote: > >> Hi >> >> 2012/3/8 Andrew Beekhof <and...@beekhof.net>: >> > On Thu, Mar 8, 2012 at 7:56 AM, Lars Ellenberg >> > <lars.ellenb...@linbit.com> wrote: >> >> On Tue, Mar 06, 2012 at 08:18:28PM +0900, Takatoshi MATSUO wrote: >> >>> Hi Dejan >> >>> >> >>> 2012/3/6 Dejan Muhamedagic <deja...@fastmail.fm>: >> >>> > Hi, >> >>> > >> >>> > On Tue, Mar 06, 2012 at 01:15:45PM +0900, Takatoshi MATSUO wrote: >> >>> >> Hi >> >>> >> >> >>> >> I want Pacemaker to transit from Master to Stopped directly on demote >> >>> >> without failcount >> >>> >> for managing PostgreSQL streaming replication. >> >>> >> Can Pacemaker do this ? >> >>> > >> >>> > What the RA should do on demote is, well, demote an instance to >> >>> > slave. Why would you want to stop it? >> >>> >> >>> Because PostgreSQL cannot transit from Master to Slave. >> >>> >> >>> > Of course, nothing's stopping you to that and I guess that pacemaker >> >>> > would be able to >> >>> > deal with it eventually. But note that it'll expect the resource >> >>> > to be in the Started state after demote. >> >>> >> >>> It causes failing of monitor in spite of success of demote. >> >>> >> >>> > >> >>> >> I returned "$OCF_NOT_RUNNING" on demote as a trial, >> >>> >> but it incremented a failcount. >> >>> > >> >>> > "$OCF_NOT_RUNNING" should be used only by the monitor operation. >> >>> > It'll count as error with other operations. >> >>> >> >>> get it. >> >> >> >> Actually, Andrew told me on IRC about plans to support this: >> >> <beekhof> oh, and start ops will be able to tell us a resource is master >> >> and demote that its stopped >> >> <beekhof> if thats something you feel inclined to take advantage >> >> >> >> So, a "start" could then return $OCF_RUNNING_MASTER to indicate that it >> >> went straight into Master mode, and a "demote" would be able to indicate >> >> it went straight into Stopped state by returning $OCF_NOT_RUNNING. >> >> >> >> No idea when that will be available or in which release. >> > >> > Probably 1.1.8 >> >> It's a good news. >> >> > I'm trying to clean up some outstanding bugs for 1.1.7 at the moment. >> > >> > Could someone file a bug for this though? That will make sure it >> > doesn't get lost :-) >> >> I filed it. >> https://developerbugs.linuxfoundation.org/show_bug.cgi?id=2644 >> >> Regards, >> Takatoshi MATSUO >> >> _______________________________________________ >> Pacemaker mailing list: Pacemaker@oss.clusterlabs.org >> http://oss.clusterlabs.org/mailman/listinfo/pacemaker >> >> Project Home: http://www.clusterlabs.org >> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf >> Bugs: http://bugs.clusterlabs.org > > > -- > Michael Vallaly <mvall...@nolatency.com> _______________________________________________ Pacemaker mailing list: Pacemaker@oss.clusterlabs.org http://oss.clusterlabs.org/mailman/listinfo/pacemaker Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
