February 2020
Intermediate to advanced
734 pages
38h 13m
English
Content preview from PostgreSQL 12 High Availability Cookbook - Third Edition
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Getting ready
A hot standby server should have similar—if not exactly the same—specifications as the PostgreSQL server it is subscribed to. Try to accomplish this if possible. Due to our use of rsync, we recommend applying the Securing the WAL stream recipe to consume WAL files from the upstream system.
The log shipping method we'll be using here has been deprecated for quite a while. However, this is a good opportunity to learn how things worked in the past and the benefits of newer approaches.
If this is a Red Hat or CentOS system, the new server will need some initial provisioning now that systemd is more prevalent. To run PostgreSQL in a non-default directory, we recommend executing this command:
systemctl edit postgresql-12
Then, enter ...
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