Management Tools?

[Glenn Satchell]

Hi Ken

dhcpstatus is pretty old, but answers your criteria for items 1 and 4.
Works as a command line script and a cgi on a local web server by reading
the dhcpd.leases file.

http://dhcpstatus.sourceforge.net/

I made some simple changes to handle dhcpd version 4.x which adds an extra
item in dhcpd.leases. It's the same group of 5 lines added to two files.

diff -r -c ./dhcpstatus.pm
/usr/local/pkgs/dhcpstatus_0.60/dhcpstatus/dhcpstatus.pm
*** ./dhcpstatus.pm     Fri Aug 31 20:33:34 2001
--- /usr/local/pkgs/dhcpstatus_0.60/dhcpstatus/dhcpstatus.pm    Fri Jul 16
00:10:50 2010
***************
*** 45,50 ****
--- 45,55 ----
     my %lease_ips;
  LEASE:
     while (@_) {
+       # new in dhcp 4.x
+       if ($_[0] eq "server-duid") {
+        while (shift !~ /;$/) {}
+        next LEASE;
+       }
        if ($_[0] ne "lease") {         # ignore anything that isn't a lease.
           while (shift ne "}") {}
           next LEASE;
diff -r -c ./dhcpstatus_subnet.pm
/usr/local/pkgs/dhcpstatus_0.60/dhcpstatus/dhcpstatus_subnet.pm
*** ./dhcpstatus_subnet.pm      Sun Aug 12 15:00:50 2001
--- /usr/local/pkgs/dhcpstatus_0.60/dhcpstatus/dhcpstatus_subnet.pm    
Fri Jul 16 00:12:51 2010
***************
*** 166,171 ****
--- 166,176 ----
     my %lease;
  LEASE:
     while (@_) {
+       # new in dhcp 4.x
+       if ($_[0] eq "server-duid") {
+        while (shift !~ /;$/) {}
+        next LEASE;
+       }
        if ($_[0] ne "lease") {         # ignore anything that isn't a lease.
           while (shift ne "}") {}
           next LEASE;

I make no claims that this is the most elegant perl code, but it does the
job :)

Creating static assignments is handled easily in the dhcpd.conf file.
Freeing dab addresses is not something that happens very much at all with
dhcpd, but I guess that might depend on the clients to some extent.

regards,
-glenn

On Fri, July 18, 2014 12:00 am, Ken Mandelberg wrote:
> I just had a look at webmin. I was hoping for something more limited and
> targeted to just monitoring dhcp assignments. webmin is designed for a
> collection of other admin tasks that we are more comfortable doing other
> ways, and even within the dhcp module a lot of it is for overall
> configuration of the server.
>
> I guess if there is nothing more limited and targeted to dhcp monitoring
> we may give it a try.
>
>
> Doug Barton wrote, On 07/16/2014 07:15 PM:
>> On 07/16/2014 04:08 PM, Ken Mandelberg wrote:
>>> We just started running the ISC dhcp server on Centos, specifically the
>>> one Centos packages 4.1.1 38.P1.el6.centos. We moved dhcp service from
>>> Solaris to Linux. It seems to be working fine, but we are looking for
>>> some simple (possibly GUI) management tool, similar to the the dhcpmgr
>>> on Solaris.
>>>
>>> Nothing fancy, just a tool that
>>>
>>>     * prints out the status of each address in the pool, including
>>> whats
>>> holding it and how much lease is left.
>>>     * allows freeing bad addresses (happens a lot on Solaris :))
>>>     * allows static assignments to an address
>>>     * some searching by MAC address, etc.
>>>
>>> Is there something available?
>>
>> Have you tried Webmin?
>>
>> Doug
>>
>
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