dhcpd: any way to check dhcp pool status?

Question

Once dhcpd (IPv4) is started, is there any way to check its internal pool status? e.g how many addresses are available?

I checked man(8) dhcpd, there's no signals/files available for that info.

score 8 · Answer 1 · edited Sep 20 '16 at 04:17

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Checking status of leases is easiest with analysis tool.

http://dhcpd-pools.sourceforge.net/

After building the dhcpd-pools, you can use dhcpd.conf and dhcpd.leases as inputs to the command ./dhcpd-pools.

edited Sep 20 '16 at 04:17

heemayl

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answered Nov 25 '12 at 20:35

kerolasa

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score 6 · Accepted Answer · answered May 27 '12 at 07:51

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On Ubuntu there is the file /var/lib/dhcp/dhcpd.leases, but it is rather verbose and you probably need a little script if you want more high level statistics. I am unaware of existing tools to do this.

There is a separate man page for this file man dhcpd.leases describing the database format.

answered May 27 '12 at 07:51

jippie

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Thanks for the filename , on arch linux I find it was located at `/var/state/dhcp/dhcpd.leases` – daisy May 27 '12 at 07:57
On X random linux distro, the location of the lease file is probably defined in the dhcpd.conf file. It might possibly use the compiled-in default though. The config file usually lives under /etc (although perhaps in a subdirectory; red hat puts it in /etc/dhcp/dhcpd.conf). – Dan Pritts Jul 09 '13 at 16:12
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@DanPritts The parameter is called `lease-file-name` in `dhcpd.conf` IIRC. – jippie Jul 09 '13 at 17:37

score 1 · Answer 3 · edited Apr 13 '17 at 12:36

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Here is a good command to show dhcp leases in nice format.

Check it out: Command to list assigned dhcp addresses

edited Apr 13 '17 at 12:36

Community

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answered Dec 19 '15 at 07:47

Hojat Modaresi

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dhcpd: any way to check dhcp pool status?

3 Answers3