[Openstack-operators] [Grizzly] Problems with DHCP Agents

Samuel Winchenbach swinchen at gmail.com
Tue Nov 26 00:27:21 UTC 2013


Hi All,

So I am experiencing a rather frustrating problem.  I have three nodes
running quantum dhcp agent (for high availability) and nova-compute.  I
found that certain VMs do not get an address if all three DHCP agents are
running.   Here is the output of dhcpdump on the tap interface to one of
the VMs:

* WITHOUT test2 (worked - using test1 and test3)
http://pastie.org/pastes/8508325/text


* WITH test2 (did not work - using test1, test2, test3)
http://pastie.org/pastes/8508340/text

The log files look fine, no errors in dnsmasq.log or dhcp-agent.log

Here is what _seems_ to be in common when things do not work:
* the guest vm is using udhcpc as the DHCP client
* It is possible this only occurs when the DHCP agent is running on the
same node as the VM.


Does anyone have any ideas?  I am pulling my hair out here.

Sam
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack-operators/attachments/20131125/0d723449/attachment.html>


More information about the OpenStack-operators mailing list