https://blog.khmersite.net/tags/pg_dump/ Recent content in Pg_dump on Kenno's Open Note https://blog.khmersite.net/%3Clink%20or%20path%20of%20image%20for%20opengraph,%20twitter-cards%3E https://blog.khmersite.net/%3Clink%20or%20path%20of%20image%20for%20opengraph,%20twitter-cards%3E Hugo -- 0.154.0 en Fri, 21 Jun 2024 14:43:35 +1000 https://blog.khmersite.net/p/postgresql-fatal-peer-authentication-failed-for-user-postgres/ Fri, 21 Jun 2024 14:43:35 +1000 https://blog.khmersite.net/p/postgresql-fatal-peer-authentication-failed-for-user-postgres/ <p>Recently, I upgraded a server running Ubuntu 22.04 to 24.04, that also comes with PostgreSQL 16. For some odd reasons, the Postgres server was not managed by Ansible, and changes previously made to Postgres 15 was not recorded.</p> <p>I noticed that the backup database (pg_dump) was not working properly, the backup database size was just a few kilobytes. Let&rsquo;s investigate, shall we?</p> <pre tabindex="0"><code>root@toto:/etc/cron.daily# ./postgresql-backup pg_dump: error: connection to server on socket &#34;/var/run/postgresql/.s.PGSQL.5432&#34; failed: FATAL: Peer authentication failed for user &#34;postgres&#34; </code></pre><p>You might be wondering, what&rsquo;s in <code>postgresql-backup</code>? Well, nothing fancy.</p>