Hey,
I have 2 nodes that are configured with streaming replication (PG 9.6, repmgr 4.3).
I was trying to upgrade the nodes to PG11 with the doc - https://www.postgresql.org/docs/11/pgupgrade.html
Everything goes well until I try to start the secondary and then it fails on the next error :
2019-05-23 04:17:02 EDT 23593 FATAL: database files are incompatible with server
2019-05-23 04:17:02 EDT 23593 DETAIL: The database cluster was initialized with PG_CONTROL_VERSION 960, but the server was compiled with PG_CONTROL_VERSION 1100.
2019-05-23 04:17:02 EDT 23593 HINT: It looks like you need to initdb.
2019-05-23 04:17:02 EDT 23593 LOG: database system is shut down
2019-05-23 04:17:02 EDT 23593 DETAIL: The database cluster was initialized with PG_CONTROL_VERSION 960, but the server was compiled with PG_CONTROL_VERSION 1100.
2019-05-23 04:17:02 EDT 23593 HINT: It looks like you need to initdb.
2019-05-23 04:17:02 EDT 23593 LOG: database system is shut down
I upgraded the primary, then I run the rsync command in the primary :
rsync --archive --delete --hard-links --size-only --no-inc-recursive /var/lib/pgsql/data /var/lib/pgsql/11/data/ secondary_ip:/var/lib/pgsql/data/
in the secondary I checked the version file and it was 11 :
[secondary]# cat PG_VERSION
11
11
Any idea how to handle it ? I'm sending it to the performance mail list because no one answered it in the admin list ..
