DHCP Lease File Error

nishith · 02-26-2014, 06:24 AM

Hello,

I have configured dhcp server on RHEL 6 & found working properly. The default lease time is 86400 seconds, means 1 day for client computer.

Now, Since last 2 days, I am facing strange problem in DHCP Server. The scenario is as given below.

* DHCP IP Address Pool Range is 192.168.1.10 to 192.168.1.20
* DHCP has assigned "192.168.1.14" IP address to my laptop.
* After an hour, if I disconnect & reconnect the network cable, DHCP Server will assign another IP Address!!!

* Means, DHCP has provided 2 IP Addresses to my laptop, but actually I need only one.

* Added to this, /var/lib/dhcpd/ directory contains 1 additional file. The names are given below.

dhcpd.leases
dhcpd.leases~

Now, what is the mean of "dhcpd.leases~" file?

That file will be created automatically when disconnect & reconnect my laptop cable to get IP Address from DHCP Server.

Can someone have the proper solution?

Pls Note: I am using DHCP in failover mode. Means, there are 2 DHCP Servers in my network in active passive mode.

Please acknowledge if possible,
Nishith

Berhanie · 02-27-2014, 01:55 AM

have you checked the man page?

Quote:

In order to prevent the lease database from growing without bound, the file is rewritten from time to time. First, a temporary lease database is created and all known leases are dumped to it. Then, the old lease database is renamed /var/lib/dhcpd/dhcpd.leases~. Finally, the newly written lease database is moved into place.