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[Bug 1266827] [NEW] Instances fail to boot with error: /var/run/openvswitch/db.sock: connection attempt failed

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Public bug reported:

Tested on RHEL6.5 with havana release openstack-nova-compute-2013.2.1-1.el6.noarch. 
Installed openstack via packstack allinone. Have not configured neutron for external access. Using the default network.

Steps to reproduce:

1. Create a f19 glance image. 
2. Boot an instance with the above image.

Fails with the following in nova/compute.log:


2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f]   File "/usr/lib/python2.6/site-packages/nova/network/linux_net.py", line 1280, in create_ovs_vif_port
2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f]     run_as_root=True)
2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f]   File "/usr/lib/python2.6/site-packages/nova/utils.py", line 177, in execute
2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f]     return processutils.execute(*cmd, **kwargs)
2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f]   File "/usr/lib/python2.6/site-packages/nova/openstack/common/processutils.py", line 178, in execute
2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f]     cmd=' '.join(cmd))
2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f] ProcessExecutionError: Unexpected error while running command.
2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f] Command: sudo nova-rootwrap /etc/nova/rootwrap.conf ovs-vsctl -- --may-exist add-port br-int qvoab718ad4-cb -- set Interface qvoab718ad4-cb external-ids:iface-id=ab718ad4-cb35-4736-b57b-d4c2b002cb36 external-ids:iface-status=active external-ids:attached-mac=fa:16:3e:f1:ae:df external-ids:vm-uuid=787f6b8d-2851-41d2-9a2d-d7b5701c546f
2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f] Exit code: 1
2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f] Stdout: ''
2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f] Stderr: '2014-01-07T15:36:50Z|00002|reconnect|WARN|unix:/var/run/openvswitch/db.sock: connection attempt failed (Connection refused)\novs-vsctl: unix:/var/run/openvswitch/db.sock: database connection failed (Connection refused)\n'
2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f] 


NOTE: This was a working setup. Have booted instances before with the same image. No config changes have been made that could explain the failure.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1266827

Title:
  Instances fail to boot with error: /var/run/openvswitch/db.sock:
  connection attempt failed

Status in OpenStack Compute (Nova):
  New

Bug description:
  Tested on RHEL6.5 with havana release openstack-nova-compute-2013.2.1-1.el6.noarch. 
  Installed openstack via packstack allinone. Have not configured neutron for external access. Using the default network.

  Steps to reproduce:

  1. Create a f19 glance image. 
  2. Boot an instance with the above image.

  Fails with the following in nova/compute.log:

  
  2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f]   File "/usr/lib/python2.6/site-packages/nova/network/linux_net.py", line 1280, in create_ovs_vif_port
  2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f]     run_as_root=True)
  2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f]   File "/usr/lib/python2.6/site-packages/nova/utils.py", line 177, in execute
  2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f]     return processutils.execute(*cmd, **kwargs)
  2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f]   File "/usr/lib/python2.6/site-packages/nova/openstack/common/processutils.py", line 178, in execute
  2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f]     cmd=' '.join(cmd))
  2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f] ProcessExecutionError: Unexpected error while running command.
  2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f] Command: sudo nova-rootwrap /etc/nova/rootwrap.conf ovs-vsctl -- --may-exist add-port br-int qvoab718ad4-cb -- set Interface qvoab718ad4-cb external-ids:iface-id=ab718ad4-cb35-4736-b57b-d4c2b002cb36 external-ids:iface-status=active external-ids:attached-mac=fa:16:3e:f1:ae:df external-ids:vm-uuid=787f6b8d-2851-41d2-9a2d-d7b5701c546f
  2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f] Exit code: 1
  2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f] Stdout: ''
  2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f] Stderr: '2014-01-07T15:36:50Z|00002|reconnect|WARN|unix:/var/run/openvswitch/db.sock: connection attempt failed (Connection refused)\novs-vsctl: unix:/var/run/openvswitch/db.sock: database connection failed (Connection refused)\n'
  2014-01-07 21:07:10.245 32545 TRACE nova.compute.manager [instance: 787f6b8d-2851-41d2-9a2d-d7b5701c546f] 

  
  NOTE: This was a working setup. Have booted instances before with the same image. No config changes have been made that could explain the failure.

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