Pgbouncer "pooler error: auth failed"

If connections to your pgbouncer setup fail with "Pooler Error: Auth failed" check the following configuration values in your pgbouncer.ini

• auth_file = ... : Ensure to point this path to your pg_auth file in your Postgres setup.
• auth_type = ... : Ensure to set the correct authentication type. E.g. "md5" for MD5 hashed passwords.
• Check if your pg_auth file has the needed passwords entries.