postgresql - Monitor logical replication using LSN - Database ...
2022年7月12日 · How do I monitor a logical replication in Postgresql 12 by seeing the lsn ? What I have done : Inspect some colomns on Publisher and Subscriber. Publisher side : select * from pg_stat_replication;-- see the REPLAY_LSN. select * from pg_replication_slots;-- see the CONFIRMED_FLUSH_LSN. Subscriber side :
How to switch master server and warm standby (with streaming ...
I have 2 servers : S_1 and S_2, and at a time T, S_1 is the master server and S_2 is a warm standby with streaming replication. At a later moment, I would like to switch S_2 become the master server and S_1 the warm standby.
replication - Postgresql - increase WAL retention to avoid slave go …
2021年12月13日 · use a physical replication slot Such an object marks a certain position in the WAL stream and prevents the primary from discarding WAL that is still needed by the standby. While being an elegant solution, this bears the risk of …
postgresql - Many-to-One replication / Transactional Replication ...
2016年1月18日 · I have several PostgreSQL DBs in different geographical locations (local sites). Each local site DB have the same schema, but unique data. For example, Take a table with columns: Site_ID, Department_ID, Department_Name.
Postgresql 11 logical replication - stuck in `catchup` state
2019年9月16日 · 2019-09-18 19:15:13.767 CEST [8611] LOG: logical replication table synchronization worker for subscription "logical_replica_from_master", table "lasttable" has finished 2019-09-18 19:54:14.875 CEST [11469] ERROR: could not send data to WAL stream: server closed the connection unexpectedly This probably …
Postgresql: how to enable pg_stat_replication_slots?
2022年3月17日 · The pg_stat_replication_slots view will contain one row per logical replication slot, showing statistics about its usage. As intended, there is nothing for physical replication slots here. Perhaps this view could be called differently, but now it's too late to rename.
Postgresql rsync synchronization of replica using rsync -u
2023年5月25日 · It is safe to synchronize PostgreSQL replication using the rsync parameter -u? For example if my replication was lost for a long time due to connection problem (WAL archive already deleted for example), I always need to rsync all the files of my database again from the master to the replica.
How to schedule PostgreSQL replication? - Database …
You can use pg_basebackup to take a copy of the PostgreSQL database over the replication protocol. It copies the whole DB though, it isn't incremental. You'll want to use the --xlog-method=stream argument unless you have a shared WAL archive set up. Streaming replication isn't really well suited to the purpose you describe.
postgresql - Postgres logical replication and table rename
2024年5月9日 · REFRESH PUBLICATION WITH (copy_data = off) on the subscriber and wait until you get a replication conflict because the renamed table does not exist on the subscriber. Then rename the table on the subscriber, and logical replication should be able to catch up.
postgresql - Postgres major version upgrade using replication …
2021年10月29日 · Setup logical replication with the primary to get the data up to date; Make replication the primary, and applications start connecting to the replication. Kill the Postgres service running on the old primary, and upgrade it too to 14. Setup streaming replication between the new primary (old replication) and new replication.