Where is dhcpc invoked from?

natedawg_38929 · 03-10-2004, 01:53 AM

ok..pulling my hair out!!! Where/how does dhcpc get invoked? The problem I'm having is that whenever my power suddenly goes out, the dhcpc-ethX.pid file doesnt get deleted as with a normal shutdown. When the box comes back up, it sees the old .pid file and doesnt initialize the interface.I've written a script to delete the junk .pid file, but I need to know where in which script to put it.

Crazy Travis · 03-10-2004, 01:57 AM

misunderstood question.

peter_robb · 03-10-2004, 02:13 AM

If the power dropping out is a forever problem, try making a softlink pointing /var/run into the system ramdisk /dev/shm
That way all the pids get dropped when the system dies..

The ifup/ifdown script should be doing a ps ax to match the process name with the pid file to prove it is/isn't stale...

Have a look at /etc/inittab and follow the rc files from there.
It will be called from the sysinit rc file..

natedawg_38929 · 03-10-2004, 02:26 AM

What specifically happened was...eth0 was my internal lan and eth1 was my external interface to the net, but, me being me, I wanted to swap them over making eth1 my internal and eth0 the external. I simply edited the rc.inet1.conf script and just swapped the info around. Now, for some unbeknownst reason, if I reboot the box, eth0 never gets a DHCP response and eth1 never initializes. ifconfig only shows loopback and eth0. But if i shutdown the box and power it back up, all is well. What gives?

PS -- I had also deleted all of the old stuff out of the dhcpc folder after i swapped all of the settings over so the box wouldnt get confused.

peter_robb · 03-10-2004, 03:42 AM

Hmmm..
I'm not a Slack user so I don't know how it handles runlevels, but it sounds like there is a different rc. closing sequence for shutdown than reboot.
That's normal in distros, esp SysV style, but have a look and see if you can spot the difference..

carboncopy · 03-10-2004, 09:06 AM

Quote:

Originally posted by natedawg_38929
ok..pulling my hair out!!! Where/how does dhcpc get invoked? The problem I'm having is that whenever my power suddenly goes out, the dhcpc-ethX.pid file doesnt get deleted as with a normal shutdown. When the box comes back up, it sees the old .pid file and doesnt initialize the interface.I've written a script to delete the junk .pid file, but I need to know where in which script to put it.

It is invoke by
/etc/rc.d/rc.inet1

When the power come back on, you can cd /etc/rc.d
./rc.inet1 stop
./rc.inet1 start

Or you can delete the dhcpc-ethX.pid file manually in /etc/dhcpc

and run the rc.inet1 script.

natedawg_38929 · 03-23-2004, 02:43 AM

for some reason unbeknownst to me...after cron had a chance to run overnight, all is well. I say that cron was the answer, but all I know is, that everything was in order the next day. I rebooted the machine several times and everything is fine. Thanx for all of the replies!! If anyone might know why cron had something, if at all, to do with the solution, let me know...later guys!