PostgreSQL listening only on 127.0.0.1 instead of 0.0.0.0

Issue

• PostgreSQL service only listening on 127.0.0.1:5432 instead of all available interfaces i.e the service is able to listen locally and not globally.

# netstat -tupln | grep -i 5432 | grep LISTEN
tcp        0      0 127.0.0.1:5432          0.0.0.0:*               LISTEN      26         671472     36131/postmaster     off (0.00/0/0)   <--- Listening locally and bind with 127.0.0.1

• Telnet is only accepted from localhost.

• Remote clients are not able to communicate to the PostgreSQL service and getting connection refused error.