Lease binding state update triggers?

[Tom Griffin]

Hello,

We have a problem where users cannot get a lease on a subnet configured 
with failover on some occasions. The error in the DHCPD log is "Peer 
holds all free leases" which is shown by both servers.

Looking into the leases file, I can see that there are no leases in the 
"free" state, they are in other states like "expired". All these leases 
show "next binding state free" and the "ends" time has already passed.

When does DHCPD process the lease file to determine which leases should 
have their binding state changed and is there any reason why this would 
not happen for a given subnet?

Could this be caused by the fact that our scripts could potentially 
restart both dhcpd servers every 5 mins in order to add new hosts? I 
realise this is something omshell can do, but its documentation is 
lacking so I haven't gone down that route. I am more willing to give it 
a try if it will stop future issues like this.

Many thanks,
Tom.

-- 
Tom Griffin
Data Network Administrator
The University of Sheffield