the reference to 10.0.2.15 is strange. This happens to be the address the
VirtualBox DHCP server gives to its VMs configured for NAT. Are you using
VirtualBox? Even so I have never found this to be a problem because a Quantum
DHCP namespace is isolated from the main one. Can you provide the 'ip address'
from the main namespace and the dhcp namespace.
>________________________________
> From: "Heinonen, Johanna (NSN - FI/Espoo)" <johanna.heino...@nsn.com>
>To: "openstack@lists.launchpad.net" <openstack@lists.launchpad.net>
>Sent: Monday, 20 May 2013, 7:51
>Subject: [Openstack] DHCP problem in grizzly
>
>
>
>
>Hi,
>
>I have installed grizzly with quantum and ovs-plugin. It seems that grizzly
>allocates the third address of each subnet for dhcp. (In folsom it was the
>second address). This means that the VMs will get addresses .2, .4, .5, …
>
>In my setup the first VM always boots fine and gets the address x.x.x.2. This
>can be seen in the syslog:
>
>May 20 08:29:23 grizzly-236 dnsmasq-dhcp[2190]: DHCPDISCOVER(tapdbcef145-f5)
>10.0.2.15 fa:16:3e:2d:0d:e0
>May 20 08:29:23 grizzly-236 dnsmasq-dhcp[2190]: DHCPOFFER(tapdbcef145-f5)
>10.20.30.2 fa:16:3e:2d:0d:e0
>May 20 08:29:23 grizzly-236 dnsmasq-dhcp[2190]: DHCPREQUEST(tapdbcef145-f5)
>10.20.30.2 fa:16:3e:2d:0d:e0
>May 20 08:29:23 grizzly-236 dnsmasq-dhcp[2190]: DHCPACK(tapdbcef145-f5)
>10.20.30.2 fa:16:3e:2d:0d:e0 10-20-30-2
>
>The problem comes when I start the second VM. Nova shows that the x.x.x.4 is
>allocated
>
>root@grizzly-236:~# nova list
>+--------------------------------------+----------+--------+------------------------+
>| ID | Name | Status | Networks
> |
>+--------------------------------------+----------+--------+------------------------+
>| c112ccbb-5039-4d05-b414-b53a1eafa2d8 | q-test | ACTIVE |
>tenant1-net=10.20.30.2 |
>| 4f26975c-995d-403d-88b0-e7bbf189baad | q-test-2 | ACTIVE |
>tenant1-net=10.20.30.4 |
>+--------------------------------------+----------+--------+------------------------+
>
>But from syslog I see that the answer to the DHCPDISCOVER is “no address
>available”
>
>May 20 08:33:34 grizzly-236 dnsmasq-dhcp[2190]: DHCPDISCOVER(tapdbcef145-f5)
>10.0.2.15 fa:16:3e:fc:1f:9a no address available
>May 20 08:33:52 grizzly-236 dnsmasq-dhcp[2190]: DHCPDISCOVER(tapdbcef145-f5)
>10.0.2.15 fa:16:3e:fc:1f:9a no address available
>
>When I restart the quantum-dhcp-server the problem disappears. This can be
>seen from the syslog:
>
>May 20 09:01:40 grizzly-236 dnsmasq[7235]: started, version 2.59 cachesize 150
>May 20 09:01:40 grizzly-236 dnsmasq[7235]: compile time options: IPv6
>GNU-getopt DBus i18n DHCP TFTP conntrack IDN
>May 20 09:01:40 grizzly-236 dnsmasq[7235]: warning: no upstream servers
>configured
>May 20 09:01:40 grizzly-236 dnsmasq-dhcp[7235]: DHCP, static leases only on
>10.20.30.0, lease time 2m
>May 20 09:01:40 grizzly-236 dnsmasq[7235]: cleared cache
>May 20 09:01:40 grizzly-236 dnsmasq-dhcp[7235]: read
>/var/lib/quantum/dhcp/e6f27330-be41-478c-b4d2-49ed4ce0af00/host
>May 20 09:01:40 grizzly-236 dnsmasq-dhcp[7235]: read
>/var/lib/quantum/dhcp/e6f27330-be41-478c-b4d2-49ed4ce0af00/opts
>May 20 09:02:19 grizzly-236 dnsmasq-dhcp[7235]: DHCPREQUEST(tapdbcef145-f5)
>10.20.30.2 fa:16:3e:2d:0d:e0
>May 20 09:02:19 grizzly-236 dnsmasq-dhcp[7235]: DHCPNAK(tapdbcef145-f5)
>10.20.30.2 fa:16:3e:2d:0d:e0 lease not found
>May 20 09:02:19 grizzly-236 dnsmasq-dhcp[7235]: DHCPDISCOVER(tapdbcef145-f5)
>fa:16:3e:2d:0d:e0
>May 20 09:02:19 grizzly-236 dnsmasq-dhcp[7235]: DHCPOFFER(tapdbcef145-f5)
>10.20.30.2 fa:16:3e:2d:0d:e0
>May 20 09:02:19 grizzly-236 dnsmasq-dhcp[7235]: DHCPREQUEST(tapdbcef145-f5)
>10.20.30.2 fa:16:3e:2d:0d:e0
>May 20 09:02:19 grizzly-236 dnsmasq-dhcp[7235]: DHCPACK(tapdbcef145-f5)
>10.20.30.2 fa:16:3e:2d:0d:e0 10-20-30-2
>
>May 20 09:03:39 grizzly-236 dnsmasq-dhcp[7235]: DHCPDISCOVER(tapdbcef145-f5)
>fa:16:3e:fc:1f:9a
>May 20 09:03:39 grizzly-236 dnsmasq-dhcp[7235]: DHCPOFFER(tapdbcef145-f5)
>10.20.30.4 fa:16:3e:fc:1f:9a
>May 20 09:03:39 grizzly-236 dnsmasq-dhcp[7235]: DHCPREQUEST(tapdbcef145-f5)
>10.20.30.4 fa:16:3e:fc:1f:9a
>May 20 09:03:39 grizzly-236 dnsmasq-dhcp[7235]: DHCPACK(tapdbcef145-f5)
>10.20.30.4 fa:16:3e:fc:1f:9a 10-20-30-4
>
>
>What could be the problem? Have you seen similar behavior? If yes, how did you
>fix this?
>
>Best regards,
>Johanna
>
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