Thread: unable to connect to pgsql server
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 Line 51 of db_pgsql.inc calls pg_connect (obviously?). Since all code came from a working system, I think I missed something during setup, but I'm not sure what that might be. Based on similar questions in archives, I think this info is relevant: # cat /var/pgsql/data/postgresql.conf | grep -v ^# | grep -v ^$ tcpip_socket = true shared_buffers = 512 LC_MESSAGES = 'C' LC_MONETARY = 'C' LC_NUMERIC = 'C' LC_TIME = 'C' # cat /var/pgsql/data/pg_hba.conf | grep -v ^# local all all trust host all all 127.0.0.1 255.255.255.255 trust # cat /etc/hosts | grep -v ^# ::1 localhost 127.0.0.1 localhost Frank
At 10:18 AM 5/24/04, Majolee InfoTech wrote: >This means that PHP is not configured to work with PostgreSQL. If this were true, how can phpinfo() say pgsql support is enabled? PostgreSQL Support enabled PostgreSQL(libpq) Version 7.3.5 Multibyte character support enabled SSL support disabled Active Persistent Links 0 Active Links 0 Directive Local Value Master Value pgsql.allow_persistent On On pgsql.auto_reset_persistent Off Off pgsql.ignore_notice Off Off pgsql.log_notice Off Off pgsql.max_links Unlimited Unlimited pgsql.max_persistent Unlimited Unlimited >By the way checking for postmaster process being started before doing >anything is worth here > >Try removing apache and PHP and then go thro this steps.. > >[root@majolee7:/usr/local] # cd /root/src/ > >[root@majolee7:/root/src] # gunzip apache_1.3.29.tar.gz > >[root@majolee7:/root/src] # tar -xvf apache_1.3.29.tar >[root@majolee7:/root/src] # tar -xvf php-4.3.4.tar > >[root@majolee7:/root/src] # mv apache_1.3.29/ /usr/src > >[root@majolee7:/root/src] # mv php-4.3.4/ /usr/src > >[root@majolee7:/root/src] # cd /usr/src > >[root@majolee7:/usr/src] # cd apache_1.3.29/ > >[root@majolee7:/usr/src/apache_1.3.29] # ./configure > >[root@majolee7:/usr/src/apache_1.3.29] # cd .. > >[root@majolee7:/usr/src/] # cd php-4.3.4/ > >[root@majolee7:/usr/src/php-4.3.4] # > >[root@majolee7:/usr/src/php-4.3.4] # >./configure --with-pgsql --with-apache=../apache_1.3.29 --enable-track-vars > >[root@majolee7:/usr/src/php-4.3.4] # make > >[root@majolee7:/usr/src/php-4.3.4] # make install > >[root@majolee7:/usr/src/php-4.3.4] # cd .. > >[root@majolee7:/usr/src] # cd apache_1.3.29/ > >[root@majolee7:/usr/src/apache_1.3.29] # >./configure --activate-module=src/modules/php4/libphp4.a > >[root@majolee7:/usr/src/apache_1.3.29] # make > >[root@majolee7:/usr/src/apache_1.3.29] # make install > >Open /usr/local/apache/conf/srm.conf File in to gEdit or Any Text Editor >Add Follwing Line to the File & save the File >Addtype application/x-httpd-php .php > >Open /etc/rc.d/rc.local File in to gEdit or Any Text Editor >Add Follwing Line to the File & save the File >/usr/local/apache/bin/apachectl start > >Hope this helps.. > >=============== >Mihir & Biren >Partners >Majolee InfoTech >=============== >----- Original Message ----- >From: "Frank Bax" <fbax@sympatico.ca> >To: <pgsql-php@postgresql.org> >Sent: Monday, May 24, 2004 7:07 PM >Subject: [PHP] unable to connect to pgsql server > > > > 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 > > > > Line 51 of db_pgsql.inc calls pg_connect (obviously?). Since all code >came > > from a working system, I think I missed something during setup, but I'm >not > > sure what that might be. Based on similar questions in archives, I think > > this info is relevant: > > > > # cat /var/pgsql/data/postgresql.conf | grep -v ^# | grep -v ^$ > > tcpip_socket = true > > shared_buffers = 512 > > LC_MESSAGES = 'C' > > LC_MONETARY = 'C' > > LC_NUMERIC = 'C' > > LC_TIME = 'C' > > > > # cat /var/pgsql/data/pg_hba.conf | grep -v ^# > > local all all trust > > host all all 127.0.0.1 255.255.255.255 trust > > > > # cat /etc/hosts | grep -v ^# > > ::1 localhost > > 127.0.0.1 localhost > > > > Frank
on 5/24/04 7:37 AM, fbax@sympatico.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. Also check your nsswitch.conf.
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.
Another possibility is that something is blocking the connection, like a
firewall.
> # 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.
Best,
Keary Suska
Esoteritech, Inc.
"Leveraging Open Source for a better Internet"
At 12:02 PM 5/24/04, Keary Suska wrote: >on 5/24/04 7:37 AM, fbax@sympatico.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
on 5/24/04 2:59 PM, fbax@sympatico.ca purportedly said: > 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 You could probably do this: # netstat -ln | grep 5432 Which should show two entries--one for TCP/IP, one for Unix Domain Socket. > # 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 I am not familiar with this command, but it seems to be saying that you have a listening connection on the right port. Some other questions: 1) If you use the IP instead of host name, do you get the same effect? 2) Have you tried not specifying a host--in which case the Unix domain socket will be used--and does it work? If any of the above workarounds work, I recommend using them, as I can't imagine what the problem may be. Best regards, Keary Suska Esoteritech, Inc. "Leveraging Open Source for a better Internet"
At 01:02 PM 5/25/04, Keary Suska wrote:
>on 5/24/04 2:59 PM, fbax@sympatico.ca purportedly said:
>
> > 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
>
>You could probably do this:
># netstat -ln | grep 5432
>
>Which should show two entries--one for TCP/IP, one for Unix Domain Socket.
# netstat -ln | grep 5432
tcp 0 0 192.168.1.90.29958 192.168.1.90.5432 TIME_WAIT
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
>
>I am not familiar with this command, but it seems to be saying that you have
>a listening connection on the right port.
>
>Some other questions:
>
>1) If you use the IP instead of host name, do you get the same effect?
First I got error about ip not in pg_hba.conf, so I added
host all all 192.168.1.90 255.255.255.255 trust
- when I fixed that and rebooted, the system works!!! I then removed the
above line, rebooted and tried host=127.0.0.1 in pg_connect instead of
host=localhost and that works too! So why doesn't host=localhost work?
>2) Have you tried not specifying a host--in which case the Unix domain
>socket will be used--and does it work?
It doesn't work - but different error.
PHP Warning: pg_connect(): Unable to connect to PostgreSQL server: could
not connect to server: No such file or directory
Is the server running locally and accepting
connections on Unix domain socket "/tmp/.s.PGSQL.5432"?
in /php/class/phplib-7.4/db_pgsql.inc on line 51
I think I know what's causing this problem - apache is running with "chroot
/var/www" - a change in default install sometime between OpenBSD 2.9 and
3.5 - could this also be causing the problem with tcpip socket?
on 5/26/04 7:50 AM, fbax@sympatico.ca purportedly said: > First I got error about ip not in pg_hba.conf, so I added > host all all 192.168.1.90 255.255.255.255 trust > - when I fixed that and rebooted, the system works!!! I then removed the > above line, rebooted and tried host=127.0.0.1 in pg_connect instead of > host=localhost and that works too! So why doesn't host=localhost work? > > >> 2) Have you tried not specifying a host--in which case the Unix domain >> socket will be used--and does it work? > > It doesn't work - but different error. > > PHP Warning: pg_connect(): Unable to connect to PostgreSQL server: could > not connect to server: No such file or directory > Is the server running locally and accepting > connections on Unix domain socket "/tmp/.s.PGSQL.5432"? > in /php/class/phplib-7.4/db_pgsql.inc on line 51 > > I think I know what's causing this problem - apache is running with "chroot > /var/www" - a change in default install sometime between OpenBSD 2.9 and > 3.5 - could this also be causing the problem with tcpip socket? It very well could be. They way to know is to try it sans chroot. If it works, the next headache is trying to figure out what precisely is causing the problem. From what I have heard, using Apache with chroot is such a pain in the ass that most security conscious admins don't think it's worth the effort. But if you are set on using chroot: First, you should ldd the PHP binary and make sure all libs are in the chroot space. Also, ldd each lib and make sure any libs they call are in as well. Second, make sure any DNS resolving files are also in the chroot space. I am not sure which ones are needed, but usually at least the hosts file and resolv.conf. Good luck, Keary Suska (719) 473-6431 (719) 440-9952 (cell)