On 10/23/23 18:16, Brad White wrote:
I'm stumped.

Using this command to set up the slave and replication on PG v 15:
"C:\Program Files\PostgreSQL\15\bin\pg_basebackup" -h 192.168.1.126 -U pgrep_user -p 5433 -D "C:\Program Files\PostgreSQL\15\data" -Fp -Xs -R

If I have PG running on the remote server and the data directory is intact, then I get an error, Data exists and is not empty.

If I shut down PG, delete data\*, restart PG, then it fails to start because the conf files are missing.

If I leave PG shut down and run pg_basebackup, it times out and asks if pg is running and listening on the port. Of course it is not.

I see lots of posts on how to use pg_basebackup, but apparently this isn't interesting because no one mentions whether pg should be running on the remote server.

No, it should not.

This is what works for me, in Linux on the standby system, where "buddy" and "basebackup" are references in .pg_service.conf to the primary server:
PGHOST=...
pg_ctl status && pg_ctl stop -mfast
psql service=buddy -Xac "select pg_drop_replication_slot(slot_name)
                         from pg_replication_slots
                         where slot_name = 'pgstandby1';"
/usr/bin/rm -r $PGDATA/*
pg_basebackup --dbname=service=basebackup -D $PGDATA --progress \
              --checkpoint=fast -v \
              --write-recovery-conf --wal-method=stream \
              --create-slot --slot=pgstandby1 --compress=server-zstd
pg_ctl start -wt90 -l ${MajVer}/pgstart_standby.log

Source: https://www.tecmint.com/configure-postgresql-streaming-replication-in-centos-8/


--
Born in Arizona, moved to Babylonia.


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