I can't run DHCP service

matrix5000

Hi
I have pfSense 2.1 Release (amd64)
I have default configuration. Why I can't run DHCP service. In Menu Status -> Services. I have status STOPPED if I will click start service. Service still is STOPPED.

My configs:

johnpoz

And what errors do you get in the log for it trying to start?

matrix5000

This is my partial log

johnpoz

well that says dhcpd is already running.

What do you get from say the following command

[2.1-RELEASE][root@pfsense.local.lan]/root(4): ps ax | grep dhcpd
19695 ?? Ss 0:00.92 /usr/local/sbin/dhcpd -user dhcpd -group _dhcp -chroot /var/dhcpd -cf /etc/dhcpd.conf -pf /var/run/dhcpd.pid em0 em2 em3
94985 ?? INs 0:00.02 /usr/local/sbin/dhcpleases -l /var/dhcpd/var/db/dhcpd.leases -d local.lan -p /var/run/dnsmasq.pid -h /var/etc/hosts
95845 ?? Ss 0:31.58 /usr/sbin/syslogd -s -c -c -l /var/dhcpd/var/run/log -f /var/etc/syslog.conf

I see you have opt1 interface there - do you have overlapping networks on them or something?

Do you show a pid for dhcpd? look in /var/dhcpd/var/run

[2.1-RELEASE][root@pfsense.local.lan]/var/dhcpd/var/run(11): ls -la
total 6
drwxr-xr-x 2 dhcpd _dhcp 512 Nov 5 14:40 .
drwxr-xr-x 4 dhcpd _dhcp 512 Mar 22 2012 ..
-rw-r–r-- 1 dhcpd _dhcp 6 Nov 4 16:23 dhcpd.pid
srw-rw-rw- 1 dhcpd _dhcp 0 Oct 18 13:49 log

If you see an old pid - remove it with the rm command.

matrix5000

ps ax | grep dhcp
40369 ?? Is 0:00.00 /usr/sbin/syslogd -s -c -c -l /var/dhcpd/var/run/log -f /var/etc/syslog.conf

in /var/dhcpd/var/run
total 6
drwxr-xr-x 2 dhcpd _dhcp 512 Nov 5 21:47 .
drwxr-xr-x 4 dhcpd _dhcp 512 Oct 31 23:30 ..
-rw-r–r-- 1 dhcpd _dhcp 6 Nov 1 00:05 dhcpd.pid
srw-rw-rw- 1 root _dhcp 0 Nov 5 21:47 log

I don't have overlapping networks in opt1

johnpoz

that id not the command I ran, its dhcpd not just dhcp

And you have a pid there, so you might want to try and remove it.

matrix5000

I ran this command : ps ax | grep dhcpd
My result.

39047 ?? Is 0:00.00 /usr/sbin/syslogd -s -c -c -l /var/dhcpd/var/run/log

johnpoz

Again you show a PID, did you delete that PID file?

in /var/dhcpd/var/run
total 6
drwxr-xr-x 2 dhcpd _dhcp 512 Nov 5 21:47 .
drwxr-xr-x 4 dhcpd _dhcp 512 Oct 31 23:30 ..
-rw-r–r-- 1 dhcpd _dhcp 6 Nov 1 00:05 dhcpd.pid
srw-rw-rw- 1 root _dhcp 0 Nov 5 21:47 log

matrix5000

Hi
After deleting this PID file , everything works properly. Thank you for help me. But I have one question why I had to delete this file ?.

johnpoz

because something got stuck and system thought it was running because of the pid file, when it really wasnt. Did you have a power outage or something?

So you cleared up the old pid, now if you look there is a new pid file - if you view the contents of the file with cat it will show you a number – the pid.. As you stop and start the service this number will change.

If something wrong with the file, or it has a pid number of a running process that is not dhcpd - system can think dhcpd is already running, etc.

deleting it just allowed whatever the snafu was to get cleared up.