-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On 14/3/19 5:15 pm, Michael Cassaniti wrote: > > On 14/3/19 3:10 pm, Michael Paquier wrote: > > On Thu, Mar 14, 2019 at 02:59:38PM +1100, Michael Cassaniti wrote: >> I've got master/slave replication setup between a few hosts. At any > >> point a slave could become a master. I've got appropriate locking in > >> place using an external system so that only one master can exist at a > >> time. I'm having trouble determining when my slaves are in sync with > the >> current master so that they can be a candidate for promotion. I > want >> some form of indicator _without reading a log_ when streaming >> > replication has started. > > pg_stat_replication on the primary, no? > Here is its documentation: > > https://www.postgresql.org/docs/11/monitoring-stats.html#MONITORING-STATS-VIEWS > > -- > Michael This at least points me in the right direction. I need > something on the receiver side, so the state column in > pg_stat_wal_receiver might cover. I can check for state = streaming, but > the DB won't accept connections in standby mode. > > Thanks for the quick reply. Actually I was wrong. For some reason my testing initially didn't want to allow read-only connections. Problem solved. -----BEGIN PGP SIGNATURE----- iG0EAREIAB0WIQT0DIHSqEo48gI0VT9pF1oDt4Q+5wUCXIoJgAAKCRBpF1oDt4Q+ 53AnAOCQSbaOZy+K1qR8C3+EjBWshY0qwwVmHIG+Khy0AOCmAS+TgqE+mngBzpx5 jgMbyjaDn2RXvS14xW68 =sk4C -----END PGP SIGNATURE-----
