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...
Imagine our PgBouncer server is on pgha-proxy, our old PostgreSQL server is pgha1 with an IP address of 10.0.30.1, and the new target is pgha2 with an IP address of 10.0.30.2. Follow these steps to switch servers:
- Set the server_fast_close parameter in pgbouncer.ini to 1.
- Make whatever changes are necessary to the pgbouncer.ini file. For example, we could change our global mapping to this:
[databases] * = host=pgha2
- Send the new RECONNECT command to PgBouncer:
psql -U postgres -h pgha-proxy -p 6432 -c "RECONNECT;" pgbouncer
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