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 listen_addresses=‘*’ I edited the pg_hba.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.
This textbox defaults to using Markdown to format your answer.
You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!
These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.
Join our DigitalOcean community of over a million developers for free! Get help and share knowledge in Q&A, subscribe to topics of interest, and get courses and tools that will help you grow as a developer and scale your project or business.
It definitely seems like you can’t access it due to firewalling. What the full output of
iptables -L
?