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...
Follow these steps on the monitoring system to watch the 10.0.30.1 server, which is the first node of our PostgreSQL cluster:
- Use the following directory for Debian-based systems:
/etc/nagios4
- Use this directory for Red Hat derivatives:
/etc/nagios
- As a root-level user, create a file named conf.d/db_conf.cfg in the preceding path. It may be necessary to create the conf.d directory itself on some systems.
- Make sure the following line appears in the nagios.cfg file on Debian-based systems:
cfg_dir=/etc/nagios4/conf.d
- Otherwise, make sure this line appears in nagios.cfg on Red Hat-based systems:
cfg_dir=/etc/nagios/conf.d
- In the db_conf.cfg file, define a command entry by adding this text:
define command { command_name ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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