Peer Authentication Failed: Fixing FATAL Errors In PostgreSQL
FATAL: Peer authentication failed for user "db_user". Fix: Switch to password-based auth in pg_hba.conf or use correct Unix/Linux user that matches PostgreSQL user.
The error FATAL: Peer authentication failed for user "db_user" indicates that PostgreSQL is trying to authenticate the user db_user using "peer" authentication, but it is failing. What is Peer Authentication? Peer authentication is a method used by PostgreSQL to authenticate users based on the Unix/Linux user they are currently logged in as. This means PostgreSQL expects the database username to match the system username. Solutions to Resolve the Error 1. Switch to Password Authentication You can change the authentication method to md5 (password-based) or password...