What is the proper method to restart two node failover-dhcp services?

Carlos Vicente cvicente.lists at gmail.com
Thu Dec 1 17:58:02 UTC 2011

This is what I remember reading on this list:

a) Bringing both servers back into sync: Move or rename the leases
file on the secondary. Restart dhcpd on the secondary.
b) Restarting after making config changes: Restart the secondary
first. When that is done, restart the primary.

Hope this helps.


On Thu, Dec 1, 2011 at 11:52 AM, Marion Bogdanov
<marion.bogdanov at gmail.com> wrote:
> Kind folks,
> We are experiencing some issues with our two failover configured DHCP
> servers.
> In particular, for short leases (300 seconds), which is predominantly
> wireless users, the users are experiencing problems that let us to
> discovering that the dhcp server is issuing duplicate IPs.
> We are lead to believe that this may be caused by our method used to restart
> the services, after we have made changes to the scopes files, which is:
> root at dhcp1#   /usr/sbin/dhcpdctl stop; /usr/sbin/dhcpdctl start;
> followed by:
> root at dhcp2#   /usr/sbin/dhcpdctl stop; /usr/sbin/dhcpdctl start;
> Thanks in advance for your much appreciated input.
> -Marion
> _______________________________________________
> dhcp-users mailing list
> dhcp-users at lists.isc.org
> https://lists.isc.org/mailman/listinfo/dhcp-users

More information about the dhcp-users mailing list