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Error received from ovsdb monitor

asked 2014-08-07 02:30:53 -0500

Vinoth gravatar image

updated 2014-08-08 05:43:16 -0500

hai, I have installed Icehouse setup which has controller & neutron node in same host and compute on seprate host. Whenever I launch the instance I'm unable to catch the VNC concole in horizon & also not able to ssh the instance. Checking the log show following errors in /var/log/upstart/neutron-plugin-openvswitch-agent.log

ERROR neutron.agent.linux.ovsdb_monitor [-] Error received from ovsdb monitor: ovsdb-client: unix:/var/run/openvswitch/db.sock: receive failed (End of file) ERROR neutron.agent.linux.ovs_lib [-] Unable to execute ['ovs-ofctl', 'dump-flows', 'br-int', 'table=22']. Exception: Command: ['sudo', '/usr/bin/neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ovs-ofctl', 'dump-flows', 'br-int', 'table=22'] Exit code: 1 Stdout: '' Stderr: 'ovs-ofctl: br-int is not a bridge or a socket\n'

It seems the error is due to openVswitch & neutron-plugin-openvswitch-agent.

Could anyone help me with solution ? P.S: I installed both the controller & compute node machine inside the VirtualBox.

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answered 2014-08-07 03:26:24 -0500

stipi gravatar image

updated 2015-03-10 02:43:53 -0500

Moe gravatar image

Hi! It seems like you are missing the integration bridge on the compute nopde. Did you add the br-int bridge on the compute node? (sudo ovs-vsctl add-br br-int)

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is this enough ???? "ovs-vsctl add-br br-int" does br-int needs to be connected to a port or interface l???

amirali gravatar imageamirali ( 2015-08-07 07:11:44 -0500 )edit

answered 2014-08-07 06:01:07 -0500

foexle gravatar image


i think your ovs are not setup/configured correctly. Do you have upgraded your kernel after your installation of ovs kernel modul? It seems to ovs doesn't start correctly.


apt-get install --reinstall openvswitch-datapath-dkms

and reboot.

In addition create your br-int like stipi descipes and test with

ovs-vsctl show

if you see your other switches (gre tunnels)

Cheers Heiko

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Thanks for your responce, My kernal version is Linux controller 3.13.0-32-generic #57-Ubuntu SMP Tue Jul 15 03:51:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux In document it is given Ubuntu installations using Linux kernel version 3.11 or newer do not require the openvswitch-datapath-dkms package. I also added br-int

Vinoth gravatar imageVinoth ( 2014-08-07 06:19:46 -0500 )edit

Do you see any errors in openvswitch logs or syslog ?

foexle gravatar imagefoexle ( 2014-08-07 06:24:37 -0500 )edit

Followings are the errors I got when I restarted the openvswitch-switch


Aug 8 12:19:14 compute1 ovs-vsctl: ovs|00001|vsctl|INFO|Called as /usr/bin/ovs-vsctl --timeout=10 -- --if-exists del-port br-int patch-tun Aug 8 12:19:14 compute1 ovs-vsctl: ovs|00002|reconnect|WARN|unix:/var/run/openvswitch/db.sock: connection attempt failed (No such file or directory) Aug 8 12:19:14 compute1 ovs-vsctl: ovs|00003|vsctl|ERR|unix:/var/run/openvswitch/db.sock: database connection failed (No such file or directory) Aug 8 12:19:14 compute1 ovs-vsctl: ovs|00001|vsctl|INFO|Called as ovs-vsctl --no-wait -- init -- set Open_vSwitch . db-version=7.3.0 Aug 8 12:19:14 compute1 ovs-vsctl: ovs|00001|vsctl|INFO|Called as ovs-vsctl --no-wait set Open_vSwitch . ovs-version=2.0.1 "external-ids:system-id=\"02abc759-31da-4457-b2d8-fd5d3ec600e8\"" "system-type=\"Ubuntu\"" "system-version=\"14.04-trusty\"" Aug 8 12:19:14 compute1 ovs-vsctl: ovs|00001|vsctl|INFO|Called as /usr/bin ...(more)

Vinoth gravatar imageVinoth ( 2014-08-08 01:53:22 -0500 )edit

All right,

the problem is the same, your ovs isn't running. Howeer you should try to install the kernel module from package (openvswitch-datapath-dkms).

I don't have an other idea.


foexle gravatar imagefoexle ( 2014-08-08 02:49:42 -0500 )edit

I installed both the node inside the VirtualBox. So is this create any problem ?

Vinoth gravatar imageVinoth ( 2014-08-08 05:44:22 -0500 )edit

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Asked: 2014-08-07 02:30:53 -0500

Seen: 6,364 times

Last updated: Mar 10 '15