Why Instance cannot be started after all node reboot ?

Solution Verified - Updated -

Issue

  • After reboot or network and service restart on all nodes , the instance cannot be started.
  • Multiple openstack services like cinder / nova / neutron are seen in down state .
  • Duplicate services are seen in 'nova service-list' , 'cinder service-list' & 'neutron agent-list' after node reboot .
# nova service-list
+----+------------------+------------------------------------+----------+---------+-------+----------------------------+-----------------+
| Id | Binary           | Host                               | Zone     | Status  | State | Updated_at                 | Disabled Reason |
+----+------------------+------------------------------------+----------+---------+-------+----------------------------+-----------------+
| 1  | nova-consoleauth | controller1.example.com        | internal | enabled | up    | 2015-12-24T05:37:36.000000 | -               |
| 2  | nova-scheduler   | controller1.example.com        | internal | enabled | up    | 2015-12-24T05:37:35.000000 | -               |
| 3  | nova-conductor   | controller1.example.com        | internal | enabled | up    | 2015-12-24T05:37:34.000000 | -               |
| 4  | nova-cert        | controller1.example.com        | internal | enabled | up    | 2015-12-24T05:37:35.000000 | -               |
| 5  | nova-compute     | compute1                       | nova     | enabled | down  | 2015-12-24T05:37:32.000000 | None            |
| 5  | nova-compute     | compute2                       | nova     | enabled | down  | 2015-12-24T05:37:33.000000 | None            |
| 5  | nova-compute     | compute3                       | nova     | enabled | down  | 2015-12-24T05:37:34.000000 | None            |
| 8  | nova-compute     | compute1.example.com               | nova     | enabled | up    | 2015-12-24T18:45:00.000000 | None            |
| 9  | nova-compute     | compute2.example.com           | nova     | enabled | up    | 2015-12-24T18:45:30.000000 | None            |
| 10 | nova-compute     | compute3.example.com           | nova     | enabled | up    | 2015-12-24T18:45:06.000000 | None            |
+----+------------------+------------------------------------+----------+---------+-------+----------------------------+-----------------+
  • Existing instances fail to start after compute node reboot or network and service restart .

Environment

  • Red Hat OpenStack

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