I use postgresql 9.1 replication to a lot of workstations that have postgresql on hot standby mode. However sometimes these workstations go offline and disconnect from the master server. If they go offline for more than say a day they stop replicating, because the wal segments are no longer available. My question is how do I properly configure the master and the standby servers so that they can still replicate even after being disconnected from each other for several days.
PostgreSQL – WAL Saving for Offline Standby Servers
postgresqlreplication
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Best Answer
Set up WAL archiving. If the master no longer retains enough WAL your replica will fall back to its
archive_command.See the documentation and this post I wrote earlier.