[ntp:questions] NTP as HA-cluster service

James james.purl at gmail.com
Fri Jun 5 13:46:20 UTC 2009


On Jun 4, 3:49 pm, David Woolley
<da... at ex.djwhome.demon.co.uk.invalid> wrote:
> James wrote:
> > I have NTP setup as a heartbeat service in a two-node cluster.  If I
> > was to offer this service to the public pool, would there be an issue
> > with hosts using it when the service failed over to the other node?  I
>
> NTP should not be failed over.  It should be provided on addresses that
> correspond to specific physical machines.  Failover for ntpd should be
> done by having the client have both machines as servers.
>
> > ask because currently I don't have a DRBD or network filesystem for
> > NTP, I have it configured identically on each node and the service
> > just runs on one of the nodes at at time (with a virtual IP). The node
> > that isn't the server just ntpdate's itself against the virtual IP
> > every so often.

Thanks for the feedback (both on and off list).  I'll just configure
the service to run on both nodes fully, then make adjustments to my
clients and external routing.




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