[K12OSN] DHCP gone wild

[Terrell Prude', Jr.]

Not sure if it's a kernel issue or if dhcpd is sucking up all memory 
somehow, or what.  Let's do some diags.  It appears  from your log 
snippet that dhcpd is continuously renewing two IP addresses, which I 
find very strange indeed.

While your server's running, and after you get a bunch of these DHCP 
logs again, can you run top and see how much DRAM that dhcpd is using?  
Also, let us know what the CPU usage is, both for dhcpd and total 
usage.  dhcpd shouldn't be using very much DRAM (say, around 2MB or 
less).  CPU should be basically nil for dhcpd.

--TP

Jack wrote:

>My test machine is just an AMD 2700 with 1GB DDR.  Here is the output
>from uname -a
>
>Linux tserver.palmadesso.net 2.4.22-1.2174.nptl #1 Wed Feb 18 16:38:32
>EST 2004 i686 athlon i386 GNU/Linux
>
>
>
>On Sat, 2004-04-03 at 10:17, Jack wrote:
>  
>
>>Sorry,  Running K12LTSP 4.0l.1 with all the latest updates from yum.
>>
>>Jack
>>
>>On Sat, 2004-04-03 at 08:05, Terrell Prude', Jr. wrote:
>>    
>>
>>>What version of K12LTSP are you running--3.1.2, 4.0.1, SMP kernel, etc.?
>>>
>>>--TP
>>>
>>>Jack wrote:
>>>
>>>      
>>>
>>>>Lately my test system has been crashing mysteriously.  /var/log/messages
>>>>contains the following:
>>>>
>>>>Apr  2 06:35:20 tserver ntpd[3399]: kernel time discipline status change
>>>>41
>>>>Apr  2 06:37:30 tserver ntpd[3399]: kernel time discipline status change
>>>>1
>>>>Apr  2 06:38:24 ws243 -- MARK --
>>>>Apr  2 07:07:53 ws248 -- MARK --
>>>>Apr  2 07:29:21 ws252 -- MARK --
>>>>Apr  2 07:38:23 ws243 -- MARK --
>>>>Apr  2 08:07:53 ws248 -- MARK --
>>>>Apr  2 08:29:21 ws252 -- MARK --
>>>>Apr  2 08:38:23 ws243 -- MARK --
>>>>Apr  2 09:07:53 ws248 -- MARK --
>>>>Apr  2 09:28:18 tserver ntpd[3399]: synchronisation lost
>>>>Apr  2 09:29:21 ws252 -- MARK --
>>>>Apr  2 09:32:10 tserver dhcpd: Wrote 0 deleted host decls to leases
>>>>file.
>>>>Apr  2 09:32:10 tserver dhcpd: Wrote 0 new dynamic host decls to leases
>>>>file.
>>>>Apr  2 09:32:10 tserver dhcpd: Wrote 12 leases to leases file.
>>>>Apr  2 09:32:10 tserver dhcpd: DHCPREQUEST for 192.168.0.251 from
>>>>00:a0:c9:75:ca:27 via eth0
>>>>Apr  2 09:32:10 tserver dhcpd: DHCPACK on 192.168.0.251 to
>>>>00:a0:c9:75:ca:27 via eth0
>>>>Apr  2 09:32:10 tserver dhcpd: DHCPREQUEST for 192.168.0.242 from
>>>>00:06:29:a2:a7:7d via eth0
>>>>Apr  2 09:32:10 tserver dhcpd: DHCPACK on 192.168.0.242 to
>>>>00:06:29:a2:a7:7d via eth0
>>>>Apr  2 09:32:11 tserver dhcpd: DHCPREQUEST for 192.168.0.251 from
>>>>00:a0:c9:75:ca:27 via eth0
>>>>Apr  2 09:32:11 tserver dhcpd: DHCPACK on 192.168.0.251 to
>>>>00:a0:c9:75:ca:27 via eth0
>>>>-snip  This goes on until the server crashes..
>>>>
>>>>Apr  2 12:18:01 tserver dhcpd: DHCPREQUEST for 192.168.0.242 from
>>>>00:06:29:a2:a7:7d via eth0
>>>>Apr  2 12:18:01 tserver dhcpd: DHCPACK on 192.168.0.242 to
>>>>00:06:29:a2:a7:7d via eth0
>>>>Apr  2 12:18:51 tserver dhcpd: DHCPREQUEST for 192.168.0.242 from
>>>>00:06:29:a2:a7:7d via eth0
>>>>Apr  2 12:18:51 tserver dhcpd: DHCPACK on 192.168.0.242 to
>>>>00:06:29:a2:a7:7d via eth0
>>>>Apr  2 12:19:44 tserver dhcpd: DHCPREQUEST for 192.168.0.242 from
>>>>00:06:29:a2:a7:7d via eth0
>>>>Apr  2 12:19:44 tserver dhcpd: DHCPACK on 192.168.0.242 to
>>>>00:06:29:a2:a7:7d via eth0
>>>>Apr  2 18:00:02 tserver syslogd 1.4.1: restart (remote reception).
>>>>Apr  2 18:00:02 tserver syslog: syslogd startup succeeded
>>>>Apr  2 18:00:02 tserver kernel: klogd 1.4.1, log source = /proc/kmsg
>>>>started.
>>>>
>>>>I'm planning on just reinstalling but I'm looking for ideas.  Anyone?
>>>>
>>>>Jack
>>>>        
>>>>