Fixing no pg_hba.conf entry and password authentication failed by Root Cause
How to map six PostgreSQL connection errors onto the network, pg_hba, and authentication layers and diagnose them in 30 seconds. Covers an error-text lookup table, ss and pg_hba_file_rules diagnostics, first-match rules, PG14 scram-sha-256
Aug 25
5 Ways to Fix PostgreSQL password authentication failed for user postgres
Diagnose the PostgreSQL 'password authentication failed for user postgres' error by five causes in order—typos, unset password, pg_hba.conf scram/md5 mismatch, and Docker networking. Includes copy-paste commands for psql, JDBC, and Spring.
Jun 13