Re: unable to connect to pgsql server

At 12:02 PM 5/24/04, Keary Suska wrote:

>on 5/24/04 7:37 AM, fbax(at)sympatico(dot)ca purportedly said:
>
> > I have a working system on OpenBSD 2.9 / PHP 4.0.4pl1 / pgsql 7.1 /
> phplib 7.4
> > I created a new system on OpenBSD 3.5 / PHP 4.3.5RC3 / pgsql 7.3.5 / phplib
> > 7.4
> > I copied an existing database and php/phplib application to the new box for
> > testing, but when I try to access the application webpage, I get the
> > following message in apache error log:
> > PHP Warning: pg_connect(): Unable to connect to PostgreSQL server: unknown
> > host name: localhost in /php/class/phplib-7.4/db_pgsql.inc on line 51
>
>Usually, this is either because PHP can't resolve localhost, or the Postgres
>server can't/isn't responding. Can you use localhost otherwise? E.g.:
> $ telnet localhost
>Even if telnetd isn't running, you should get two different messages--one
>that indicates the host won't resolve, and the other indicating that the
>host isn't responding (if telnetd isn't running). If you cannot use
>localhost from the command line you probably have some other configuration
>problem.

telnet is disabled on OpenBSD by default by "ssh localhost" works fine.

> Also check your nsswitch.conf.

No such file on the system.

>If the above works, make sure the postmaster (Postgres server) has enabled
>IP connections. First check if Postmaster is listening using netstat. On my
>Linux box, I would use netstat -lnp (but your options may be different). If
>it is, check to make sure you are using the correct port. The default is
>5432, so if you don't specify the port in the connect string the default
>port will be used.

I couldn't figure out OpenBSD options for netstat. Do these prove the same
thing?
# netstat -l | grep 5432
0xd187f7d8 stream 0 0 0xe8844498 0x0 0x0 0x0
/tmp/.s.PGSQL.5432
# fstat | head -n 1 ; fstat | grep 5432
USER CMD PID FD MOUNT INUM MODE R/W DV|SZ
_pgsql postgres 5444 3* internet stream tcp 0xd18729dc *:5432

This also works:
$ psql -h localhost dbname dbname

> > # cat /etc/hosts | grep -v ^#
> > ::1 localhost
> > 127.0.0.1 localhost
>
>If nothing else works, this is a wild guess, but I don't know if PHP has
>IPv6 support. Just for the heck of it, you may want to try reversing the
>above lines in your hosts file so PHP sees the IPv4 address first.

Change order and/or removal of IPV6 entry has no effect.

>Another possibility is that something is blocking the connection, like a
>firewall.

I don't think any firewall software is installed/active by default and I
didn't install/activate any.

Frank