報錯信息如下：
2017-10-02 22:42:02.944 80378 INFO nova.compute.manager [req-347dcc06-13cb-4ced-a10d-b21bf4427430 - - - - -] [instance: ec21b955-8d9c-4c42-ab33-ce5d32d6ba61] During _sync_instance_power_state the DB power_state (1) does not match the vm_power_state from the hypervisor (4). Updating power_state in the DB to match the hypervisor. 2017-10-02 22:42:03.009 80378 WARNING nova.compute.manager [req-347dcc06-13cb-4ced-a10d-b21bf4427430 - - - - -] [instance: ec21b955-8d9c-4c42-ab33-ce5d32d6ba61] Instance shutdown by itself. Calling the stop API. Current vm_state: active, current task_state: None, original DB power_state: 1, current VM power_state: 4 2017-10-02 22:42:03.116 80378 INFO nova.compute.manager [req-347dcc06-13cb-4ced-a10d-b21bf4427430 - - - - -] [instance: ec21b955-8d9c-4c42-ab33-ce5d32d6ba61] Instance is already powered off in the hypervisor when stop is called. 2017-10-02 22:42:03.171 80378 INFO nova.virt.libvirt.driver [req-347dcc06-13cb-4ced-a10d-b21bf4427430 - - - - -] [instance: ec21b955-8d9c-4c42-ab33-ce5d32d6ba61] Instance already shutdown. |
解決辦法：
修改配置文件/etc/nova/nova.conf
| sync_power_state_interval=-1 |
這個是管理層面用來檢測虛擬機電源狀態的參數，導致了計算節點上面的虛擬主機莫名其妙關機.
參考文檔：http://www-01.ibm.com/support/docview.wss?uid=nas8N1020669