My question is, what could I have done to avoid this (other than killing the dhclient process)? Is there a better way to reconfigure an interface to use a static address? I am not interested in solutions that involve using a GUI (i.e., only command line solutions).
Unless this device is going to be switching from DCHP to static frequently, wouldn't simply killing the dhclient process be sufficient?
If not, you could always simply write a shell function for ifconfig (if you're using bash, ksh or sh) that checks for an associated dhclient process when and interface is "down"'d and kills the associated dhclient process.
Hope this helps,
Justin.
-----Original Message----- From: Alfred von Campe [mailto:alfred@110.net] Sent: Wednesday, September 13, 2006 2:06 PM To: CentOS mailing list Subject: [CentOS] Lingering dhclient issue
I recently reconfigured some CentOS 4.3 systems that were using DHCP to use static IP addresses. At the same time, the systems were moved to a new VLAN. Here is the approximate sequence of events that took place:
1. ifdown eth0 2. edit /etc/sysconfig/network-scripts/ifcfg-eth0 with static IP address 3. wait for network folks to reconfigure switch 4. ifup eth0
I may have reversed steps 1 and 2 on some of the systems.
The problem was that the dhclient process didn't go away, and kept renewing the old lease. Our DHCP server is configured to contact the DNS server and update the entry for each host it serves. So the DNS entries for these systems were pointing to the old address in the old VLAN. The eth0 interface itself just kept the static IP address for which it was configured. It took me a while to figure out what was going on.
My question is, what could I have done to avoid this (other than killing the dhclient process)? Is there a better way to reconfigure an interface to use a static address? I am not interested in solutions that involve using a GUI (i.e., only command line solutions).
Thanks, Alfred _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos