[Nagiosplug-devel] [ nagiosplug-Bugs-1648570 ] check_dhcp error by asking 2 dhcp servers

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Bugs item #1648570, was opened at 2007-01-31 09:36
Message generated for change (Comment added) made by hweiss
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Category: None
Group: None
>Status: Closed
Resolution: Duplicate
Priority: 5
Private: No
Submitted By: fhackenbmt (fhackenbmt)
Assigned to: Holger Weiss (hweiss)
Summary: check_dhcp error by asking 2 dhcp servers

Initial Comment:
nagios-plugins 1.4.5 contains the check_dhcp version 1.6, wich has problems with some dhcp-server setups
check_dhcp version 1.7 from nagios-plugins version 1.4 works without problems, so please include the this version or fix included version.

so what is the porblem with the check_dhcp 1.6?
we have 2 dhpc-servers and if I ask one of them, the check_dhcp plugins
says:
=======snip=======
monitor:~# /usr/lib/nagios/plugins/check_dhcp -v -s 192.168.0.221
Requested server address: 192.168.0.221
DHCP socket: 3
Hardware address: 00163e0f931c
DHCPDISCOVER to 255.255.255.255 port 67
DHCPDISCOVER XID: 427952544 (0x198209A0)
DHCDISCOVER ciaddr:  0.0.0.0
DHCDISCOVER yiaddr:  0.0.0.0
DHCDISCOVER siaddr:  0.0.0.0
DHCDISCOVER giaddr:  0.0.0.0
send_dhcp_packet result: 548

recv_result_1: 333
recv_result_2: 333
receive_dhcp_packet() result: 333
receive_dhcp_packet() source: 192.168.0.222
Result=OK
DHCPOFFER from IP address 192.168.0.237 via 192.168.0.222
DHCPOFFER XID: 427952544 (0x198209A0)
DHCPOFFER chaddr: 00163E0F931C
DHCPOFFER ciaddr: 0.0.0.0
DHCPOFFER yiaddr: 192.168.0.97
DHCPOFFER siaddr: 192.168.0.237
DHCPOFFER giaddr: 0.0.0.0
Option: 53 (0x01)
Option: 54 (0x04)
Option: 51 (0x04)
Option: 1 (0x04)
Option: 3 (0x04)
Option: 6 (0x0C)
Option: 58 (0x04)
Option: 59 (0x04)
Lease Time: 3600 seconds
Renewal Time: 1800 seconds
Rebinding Time: 3150 seconds
Added offer from server @ 192.168.0.237 of IP address 192.168.0.97


recv_result_1: 333
recv_result_2: 333
receive_dhcp_packet() result: 333
receive_dhcp_packet() source: 192.168.0.221
Result=OK
DHCPOFFER from IP address 192.168.0.237 via 192.168.0.221
DHCPOFFER XID: 427952544 (0x198209A0)
DHCPOFFER chaddr: 00163E0F931C
DHCPOFFER ciaddr: 0.0.0.0
DHCPOFFER yiaddr: 192.168.0.72
DHCPOFFER siaddr: 192.168.0.237
DHCPOFFER giaddr: 0.0.0.0
Option: 53 (0x01)
Option: 54 (0x04)
Option: 51 (0x04)
Option: 1 (0x04)
Option: 3 (0x04)
Option: 6 (0x0C)
Option: 58 (0x04)
Option: 59 (0x04)
Lease Time: 3600 seconds
Renewal Time: 1800 seconds
Rebinding Time: 3150 seconds
Added offer from server @ 192.168.0.237 of IP address 192.168.0.72


No (more) data received
Result=ERROR
Total responses seen on the wire: 2
Valid responses for this machine: 2
CRITICAL: Received 2 DHCPOFFER(s), 0 of 1 requested servers responded,
max lease time = 3600 sec.
=======snap=======
as yo can see the requested servers (192.168.0.221) have answerd.



----------------------------------------------------------------------

>Comment By: Holger Weiss (hweiss)
Date: 2007-05-29 16:50

Message:
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Thanks for your feedback!  "Case closed."

----------------------------------------------------------------------

Comment By: fhackenbmt (fhackenbmt)
Date: 2007-05-29 16:47

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ok with the current snapshot it works...

thanks for your work...

----------------------------------------------------------------------

Comment By: Holger Weiss (hweiss)
Date: 2007-05-29 16:29

Message:
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fhackenbmt: The reason for this problem is (most probably) explained in
tracker ID #1667488 and fixed in CVS.  Could you try the current snapshot
from

http://nagiosplug.sourceforge.net/snapshot/

and report back?

I'll set the status to "pending", feel free to re-open it if you continue
to encounter problems.

Thanks a lot, Holger

PS, psychotrahe: check_dhcp.c has been moved from plugins/ to
plugins_root/, thus the revision number confusion.  Yes, this is a drawback
of CVS ;-)

----------------------------------------------------------------------

Comment By: fhackenbmt (fhackenbmt)
Date: 2007-05-29 12:07

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this problem is reproducible with the current release.
it do not occur on check_dhcp from nagios-plugins version 1.4 

fyio: I have to dhcp servers,
one is master, the other ist slave.
the config is similar to:
http://www.lithodyne.net/docs/dhcp/dhcp-4.html

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Comment By: Subhendu Ghosh (sghosh)
Date: 2007-05-28 20:05

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It looks like 192.168.0.221 is a relay.  You actual dhcp server thinks (or
is configured) as 192.168.0.237.


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Comment By: Matthias Eble (psychotrahe)
Date: 2007-05-28 11:55

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hi fhackenbmt,

I cannot understand the versioning problem. check_dhcp 1.7 is not tagged
and should hence not have been part of any release.

Is this problem still reproducible with the current release?

Thanks for your Report
Matthias

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