Changing METHOD peer to trust in pg_hba.conf (/etc/postgresql/9.1/main/pg_hba.conf | line 85) solves the issue. Adding md5 asks for a password, hence if there is a requirement to avoid using …

Sep 1, 2024 · Switch to password-based authentication by modifying the pg_hba.conf file and setting it to md5 or password. Use the correct Unix/Linux user that matches the PostgreSQL user to maintain …

Jan 6, 2024 · One common solution is to change the authentication method in the Postgres configuration file (pg_hba.conf) from ‘peer’ to ‘md5’ or another method. Steps: Locate your …

Nov 13, 2025 · Peer authentication is only available on operating systems providing the getpeereid() function, the SO_PEERCRED socket parameter, or similar mechanisms. Currently that includes …

In this comprehensive guide, I‘ll draw on my Linux expertise to walk you through PostgreSQL‘s authentication system, explain the various causes of the peer authentication failure, and provide …

Therefore, we’ll examine scenarios where PostgreSQL Peer Authentication fails, even with correct passwords. This often involves discrepancies between OS group memberships and database role …

Peer authentication failed error arrives when you try to login to your PostgreSQL user but authentication fails because by default psql connects over UNIX sockets using peer authentication instead of …

To fix “psql Peer authentication failed for user”, either you have to log in with the “Postgres” user or change the default rule from “peer” to “md5”.

Sep 29, 2025 · Learn why Postgres shows FATAL: Peer authentication failed for user and how to resolve it quickly using peer, password, and other methods.

Jan 31, 2023 · In this tutorial, we will see how we can resolve the error “FATAL: Peer authentication failed for user *” in PostgreSQL. It is super simple to resolve this issue which takes a maximum of ten …