问题
I just recently install PostgreSQL on our server via SSH. The installation went successful, until the time I tried to connect to it using pgAdmin on my Windows machine.I received this kind of error:
could not connect to server: Connection refused (0x0000274D/10061) Is the server running on host "xxx.xxx.xxx.xxx" and accepting TCP/IP connections on port 5432?
xxx.xxx.xxx.xxx = my server's public IP.
The docs suggest this can be fixed by setting the value of listen_addresses = '*' in the /etc/postgresql/9.1/main/postgresql.conf. I did that but still it won't let me.
additional error came up
FATAL: no pg_hba.conf entry for host "xxx.xx.xxx.xxx", user "postgres", database "postgres", SSL on FATAL: no pg_hba.conf entry for host "xxx.xx.xxx.xxx", user "postgres", database "postgres", SSL off
xxx.xx.xxx.xxx = my IP address.
What seems to be I'm missing?
回答1:
Things that could block a postgres connection:
- misconfigured listen_address in postgresql.conf
- selinux (?)
- iptables
- pg_hba.conf (although this should cause a different error, not server doesn't listen)
Can you connect to the server locally, if you ssh in and run psql?
On our internal dev servers, I just turn off selinux and iptables. This is a bad idea from a security standpoint, but it might serve as a temporary step to help you narrow down where the problem is.
回答2:
You might need to change more than one configuration file. In your case, you probably need to edit pg_hba.conf, too. Search that file for "non-local connections".
I like to keep configuration files under version control. It's easier to recover from mistakes that way.
You probably need to restart the PostgreSQL server after making those changes.
回答3:
- After changing listen_addresses settings on the server, make sure to restart the PostgreSQL server (send SIGHUP to the postmaster process, with kill -HUP, etc).
- Make sure that postgresql.conf port is set to 5432
- Make sure that if a firewall is running on the server, that port 5432 is open for connections coming from the window's (client) machine you are using
- Check pg_hba.conf to make sure that the subnet of your client machine is given access
- Try using psql locally
来源：https://stackoverflow.com/questions/12286886/postgresql-server-doesnt-listen