Question
Postgresql remote connection not openning necessary ports
I bought a VPS from DigitalOcean with applications Rails+Unicorn+Nginx. I installed Postgresql 9.1 and trying to accept remote connections from that. I read all of the solutions/problems about it (Googled much) and did exactly. The problem is the following:
psql: could not connect to server: Connection refused Is the server running on host "xxx.xxx.xxx.xxx" and accepting TCP/IP connections on port 5432?
I edited the postgresql.conf file with listenaddresses=’*’ I edited the pghba.conf file and added host all all 0.0.0.0/0 md5 I restarted postgresql service and even the VPS however still I cannot connected to the database. So I tried to check the server’s listening ports:
netstat -an | grep 5432
tcp 0 0 127.0.0.1:5432 0.0.0.0:* LISTEN
unix 2 [ ACC ] STREAM LISTENING 8356 /tmp/.s.PGSQL.5432
and then I nmap'ed the server from different machine:
Not shown: 996 closed ports
PORT STATE SERVICE
21/tcp open ftp
22/tcp open ssh
80/tcp open http
554/tcp open rtsp
But still I cannot understand why postgresql not serving at the port 5432 after the configurations. I thought it might be caused by iptables. So that I add the following rules:
iptables -A INPUT -p tcp -m tcp --dport 5432 -j ACCEPT
iptables -A OUTPUT -p tcp -m tcp --dport 5432 -j ACCEPT
Still no work.
Need advice.
Thanks.
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