Intro: I thought I would try to share this with others that may run into the same issues I did with openvswitch installation and where adding bridge interfaces would hang and not actually create the bridge interface on the machine.
Symptoms:
# ovs-vsctl add-br br-intrunning the above command would just hang, hitting control-c would end with a warning/error and if you ran that command again it would say that the interface already existed.
# ovs-vsctl showwould show that the interface br-int was created, but running the command that openstack runs to check if the interface exists.
# ip -o link show br-intreturns:
Device "br-int" does not exist.upon checking the openvswitch-switch service it was no started and had the below log entries in the neutron log
/var/log/neutron/openvswitch-agent.log
Stderr: 'Device "br-int" does not exist.\n' 2013-10-29 13:34:49.759 12968 CRITICAL neutron [-] Command: ['ip', '-o', 'link', 'show', 'br-int'] Exit code: 1 Stdout: ''Running a few other checks below help to determine that the openvswitch kernel module isn't loading (I found here on launchpad)
# depmod # modprobe openvswitch_mod module not foundFIX: I then was able to find another article on launchpad that solved my particular issue by installing another package link
# apt-get install openvswitch-datapath-dkmsThe above will go through and compile the module in, once completed everything should start working and we can test that by running the commands below
# ovs-vsctl add-br br-int # ovs-vsctl show 04fd431f-06dd-4686-ade5-e3cbd59f63b6 Bridge br-int Port patch-tun Interface patch-tun type: patch options: {peer=patch-int} Port "tap2a0a5bb8-b4" tag: 1 Interface "tap2a0a5bb8-b4" Port "tapdd47ef99-9b" tag: 1 Interface "tapdd47ef99-9b" type: internal Port br-int Interface br-int type: internal Bridge br-tun Port patch-int Interface patch-int type: patch options: {peer=patch-tun} Port br-tun Interface br-tun type: internal ovs_version: "1.10.2"I will look for a better/proper fix for this assuming there is one and change this post, or update it if anyone has a better suggestion.