February 2020
Intermediate to advanced
734 pages
38h 13m
English
Content preview from PostgreSQL 12 High Availability Cookbook - Third Edition
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How to do it…
These steps will assume we have our old primary (pg-old) and the new primary (pg-new). Follow these instructions to complete the upgrade process:
- Optionally, execute this SQL on pg-new to remove the pglogical extension:
DROP EXTENSION pglogical;
- Optionally, remove pglogical from shared_preload_libraries in postgresql.conf, and restart PostgreSQL on pg-new.
- If this has not already been done, enable any high-availability management software such as repmgr, Patroni, or Pacemaker for the pg-new cluster.
- If this has not already been done, enable any backup software such as Barman or automated snapshots for the pg-new cluster.
- Stop any high-availability management software on the pg-old cluster such as repmgr, Patroni, or Pacemaker. ...
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