Hi!
We would like to increase the stability of our MediaWiki setup by
running several (identical) instances behind a load balancer.
We are using a PostgreSQL cluster as database, so I am reluctant to set
up a multi-master solution ala $wgLBFactoryConf. Instead I would like to
use $wgSharedDB/$wgSharedTables to have all MW frontends access the same
database and eventually share necessary directories via NFS (coming from
an HA fileserver). The plan is to run the frontends active/passive, i.e.
usually only one frontend will write to the database.
Is this a supported/tested configuration? The warning not to share
certain tables is obvious for wikis with different content, but it is
not clear to me, if there are also problems to be expected if I actually
want to have identical content across all wikis.
If it is possible in principle, are there any other gotchas? E.g.
disabling $wgPHPSessionHandling or something similar?
--
Jörn Clausen
Plattformen & Serverdienste
BITS - Bielefelder IT-Servicezentrum
https://www.uni-bielefeld.de/bits