Can't open lease database /dev/shm/dhcpd/dhcpd.leases:

Tue Apr 3 12:33:43 UTC 2012

On Tue, Apr 03, 2012 at 06:24:26PM +0800, 18905913309 wrote:
> >Maybe SELinux related? Does it work with "SELINUX=permissive"
> >in /etc/selinux/config?
> thks,i disabled selinux,everything is ok
> 
> thanks friends!

It is an extremely bad idea to put the leases file on volitile
storage.  If the server reboots it will forget about all the promises
it has made to clients, which will cause it to lease the same IP
addresses to different clients, causing IP conflicts.