Le Thu, 21 Jan 2016 11:34:18 -0800, John R Pierce <pie...@hogranch.com> a écrit :
> On 1/21/2016 11:07 AM, jwienc...@comcast.net wrote: > > > > > > I'm looking for a tool to automate PostgreSQL cluster management > > failover in the event the master database were to become unavailable. > > Currently are manually issuing a "pg_ctl promote" once we become > > aware that the master database has crashed. > > > > > > Is repmgr a via solution? Please pass along experiences with repmgr. > > > > Are there any other tools available to automatically issue the > > "promote" in the event of a master database crash? Yes, 3 different Pacemaker resource agents exist for PostgreSQL: * official one, in the package "resource-agents" on most linux distribs. This one is pretty complex and support multistate and stateless setup. * a simple, stupid, easy and stateless, agent: https://github.com/dalibo/pgsql-resource-agent/tree/master/stateless This one is fine for a 2 node cluster * a multistate-aware agent: https://github.com/dalibo/pgsql-resource-agent/tree/master/multistate This one is nice for multi-node cluster, searching for the best known slave to elect after a master lost. Some important docs are available in the pgsql-resource-agent (PRA) repo: * https://github.com/dalibo/pgsql-resource-agent/blob/master/FENCING.md * the stateless: https://github.com/dalibo/pgsql-resource-agent/blob/master/stateless/README.md * the multistate: https://github.com/dalibo/pgsql-resource-agent/blob/master/multistate/README.md https://github.com/dalibo/pgsql-resource-agent/blob/master/multistate/INSTALL.md https://github.com/dalibo/pgsql-resource-agent/blob/master/multistate/docs/Quick_Start.md > repmgr is a tool you could use in conjunction with a generic cluster > management system like linuxha/heartbeat, vcs, etc. > > the most difficult part is reliably determining that A) the master has > crashed, and B) fencing the failed old master so it doesn't wake up and > think its still in charge. +1 -- Jehan-Guillaume de Rorthais Dalibo -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
