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...
For this recipe, we have two PostgreSQL nodes: pg1 and pg2, which are assigned IP addresses of 10.0.30.101 and 10.0.30.102. Follow these steps as a root-capable user:
- On pg1, run this command to generate an authorization key file:
corosync-keygen
- If this doesn't return quickly, open another connection to pg1 and perform several activities to generate sufficient entropy until corosync-keygen completes. A good source of random events is software compilation, for example.
- Copy the resulting /etc/corosync/authkey file to pg2.
- Ensure the totem section of corosync.conf in /etc/corosync on both pg1 and pg2 resembles the following:
totem { version: 2 cluster_name: pgha crypto_cipher: aes256 crypto_hash: sha256 transport: knet ...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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