12.06.2013, 03:45, "Andrew Beekhof" <and...@beekhof.net>: > On 12/06/2013, at 4:48 AM, Michael Schwartzkopff <mi...@clusterbau.com> wrote: > >> Am Dienstag, 11. Juni 2013, 22:33:32 schrieb Andrey Groshev: >>> Hi, >>> I want to make Postgres cluster. >>> As far as I understand, for the proper functioning of the cluster must use >>> a >>> quorum (ie, at least three nodes). >> No. Two nodes are enough. See: no-quorum-policy="ignore". >>> But if the databases are large - it is >>> too expensive. >>> One master, two slave, and in addition backup. >>> So I'm trying to make the schema with one master, one slave, and one node >>> only for a quorum. >> One master and one slave should be enough. > > But three nodes is better.
Yes, that's better. But in a good data storage - 20 TB will not be superfluous. > >> Be sure to have fencing configured. >> >> -- >> Dr. Michael Schwartzkopff >> Guardinistr. 63 >> 81375 München >> >> Tel: (0163) 172 50 98 >> _______________________________________________ >> 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 > > _______________________________________________ > 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 _______________________________________________ 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
