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 it works...
This short recipe consists of three steps:
- Install Corosync, Pacemaker, and cluster resource management tools.
- Stop Corosync and Pacemaker.
- Disable Pacemaker on server boot.
The first step makes sense since we need the software to build the cluster. The second step is necessary while we modify the configuration file in the next recipe. But why the last step? When running a highly available cluster, caution is a beneficial attribute. A server may reboot for any number of reasons, and many of those include crashes that require further investigation.
Were Pacemaker to start immediately following a server reboot, we could potentially lose valuable diagnostic information. More importantly, a rebooted server should be considered ...
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