TCP/IP connections refused

[<soumik.bhattacharjee@xxxxxxx>]

Hi Experts,

 

We are trying to connect from Java(Microservices) applications to Database and getting below issues :

 

org.postgresql.util.PSQLException: Connection to XXXXXXX:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.

 

Please suggest your inputs and suggestions for solution.

 

The things I did :

 

1. Firewall/Ports are open from DB server for inbound traffic.
2. Added application IP ranges in pg_hba.conf file and restarted the Postgres instance.
3. The listen_addresses=’*’ is set to.
4. $ lsof -n -u postgres |grep LISTEN

postgres 26802 postgres    3u     IPv4           19104770        0t0      TCP *:postgresql (LISTEN)

postgres 26802 postgres    4u     IPv6           19104771        0t0      TCP *:postgresql (LISTEN)

5. $ netstat -ltnp | grep postgres

(Not all processes could be identified, non-owned process info

will not be shown, you would have to be root to see it all.)

tcp        0      0 0.0.0.0:5432            0.0.0.0:*      LISTEN      26802/postgres

tcp6       0      0 :::5432                 :::*                    LISTEN      26802/postgres

 

6. $ cat /etc/postgresql/12/main/postgresql.conf | grep port

port = 5432                             # (change requires restart)

#ssl_passphrase_command_supports_reload = off

 

 

Thanks