Hello,
I'm having an issue where streaming replication just randomly stops working. I haven't been able to find anything in the logs which point to an issue, but the Postgres process shows a "waiting" status on the slave:
postgres 5639 0.1 24.3 3428264 2970236 ? Ss Aug14 1:54 postgres: startup process recovering 000000010000053D0000003F waiting
postgres 5642 0.0 21.4 3428356 2613252 ? Ss Aug14 0:30 postgres: writer process
postgres 5659 0.0 0.0 177524 788 ? Ss Aug14 0:03 postgres: stats collector process
postgres 7159 1.2 0.1 3451360 18352 ? Ss Aug14 17:31 postgres: wal receiver process streaming 549/216B3730
The replication works great for days, but randomly seems to lock up and replication halts. I verified that the two databases were out of sync with a query on both of them. Has anyone experienced this issue before?
Here are some relevant config settings:
Master:
wal_level = hot_standby
checkpoint_segments = 32
checkpoint_completion_target = 0.9
archive_mode = on
archive_command = 'rsync -a %p foo@foo:/var/lib/pgsql/9.1/wals/%f </dev/null'
max_wal_senders = 2
wal_keep_segments = 32
Slave:
wal_level = hot_standby
checkpoint_segments = 32
#checkpoint_completion_target = 0.5
hot_standby = on
max_standby_archive_delay = -1
max_standby_streaming_delay = -1
#wal_receiver_status_interval = 10s
#hot_standby_feedback = off
Thank you for any help you can provide!
Andrew
