long expired DHCPD leases still in dhcpd.leases file

[Bill Shirley]

What "cleaning" do you expect?  If those addresses are still defined in dhcpd.conf
the DHCPD will keep track of them no matter when they were last used.

Bill


On 12/14/2017 4:04 PM, schilling wrote:
> When DHCPD write lease from memory to disk, there is no cleaning done? Or I am missing a configuration flag for that?
>
> We have one pair of DHCP servers which have been migrated several times to new pairs over the years. Currently running on 
> RHEL7 with DHCP 4.2.5. We recently found out that there are a lot of expired leases from several years ago are still in the 
> lease file. For example, there are about 2 millions leases in the file, but 32K leases have lease ends times in 2014, 2015, 
> and 2016.
>
> We had database out of sync from secondary to primary issue, namely, both member is claiming the other member is holding all 
> the free leases. It will get fixed after "faulting the database" 
> https://kb.isc.org/article/AA-00609/0/How-do-I-resynchronize-a-failover-pair.html. We are suspecting these leases might 
> contribute to the issue.
>
> Best,
>
> Schilling
>
>
>
>
>
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