On Tue, 2012-07-03 at 07:37 -0400, Tom Horsley wrote: > I've got some virtual machines with old kernels that know nothing > about virt clocks. They keep time so horribly when loaded up with > testbed runs that they forget to renew their DHCP lease, which > results in their name being removed from the DNS server, which > results in testbed failure :-(. If they keep time so badly, you might want to play around with NTP servers forcing the clock back into sync, quite often. > Does anyone know if it is possible to configure the DHCP daemon > to just leave expired leases active until it actually needs > to reuse the IP address for a new request? Depends which daemon you're using, but that's sometimes the default behaviour (completely new requests from strangers often get un-used IPs, until it has no choice but to re-use previously leased ones, even if the leases have expired). One option is to extend the lease time to something much longer than the expected up-time of those clients (a day, a few days, a couple of weeks, et cetera). Setting static addresses in the DHCP server configuration is probably the simplest solution. If you have less machines than available IPs, I'd do that. It also makes other configuration easier (firewalls, and other networking), which machines always have the same IP. -- [tim@localhost ~]$ uname -r 2.6.27.25-78.2.56.fc9.i686 Don't send private replies to my address, the mailbox is ignored. I read messages from the public lists. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
