2009/1/9 Gerd König <koe...@transporeon.com>: > we want to have a scenario where (at least) 2 servers are r/w accessible > and if one of the server crashes this should cause (almost) no downtime > for the database. > Yes, you're right, it's more like "keeping two databases in sync".
I would call this replication with failover (active-passive). To me, multimaster sounds like active-active, where clients can send queries to any of the nodes (that is why all nodes are masters). Of course, it's just my point of view. :) > We also use heartbeat for pinging the server themselves. Is it also > possible to use heartbeat for checking the availability of a service > (I'm not that familiar with heartbeat, so long) ? > Does this mean you have two identical installations of pgpool-II on each > of the db-servers ? Yes, I have two almost identical installations of pgpool-II on each of the PostgreSQL servers. pgpool-II handles the pgsql servers. Heartbeat provides HA to pgpool-II. Hope it helps, at least clarifying. :) -- Jaume Sabater http://linuxsilo.net/ "Ubi sapientas ibi libertas" -- Sent via pgsql-admin mailing list (pgsql-admin@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin
