VM의 상태를 manual하게 변경하는 방법
root@controller-vm:/usr/lib/python2.7/dist-packages/nova/scheduler# nova list
+--------------------------------------+------+--------+------------+-------------+-----------------------+
| ID | Name | Status | Task State | Power State | Networks |
+--------------------------------------+------+--------+------------+-------------+-----------------------+
| a9e86572-67d2-49ba-8105-ba8874e3e9f2 | vm1 | ERROR | None | Running | demo_network=10.1.1.2 |
| 93f5358f-14c7-4381-a51e-e575354e2056 | vm2 | ERROR | None | Running | demo_network=10.1.1.4 |
+--------------------------------------+------+--------+------------+-------------+-----------------------+
root@controller-vm:/usr/lib/python2.7/dist-packages/nova/scheduler# nova reset-state --active vm1
root@controller-vm:/usr/lib/python2.7/dist-packages/nova/scheduler# nova list
+--------------------------------------+------+--------+------------+-------------+-----------------------+
| ID | Name | Status | Task State | Power State | Networks |
+--------------------------------------+------+--------+------------+-------------+-----------------------+
| a9e86572-67d2-49ba-8105-ba8874e3e9f2 | vm1 | ACTIVE | None | Running | demo_network=10.1.1.2 |
| 93f5358f-14c7-4381-a51e-e575354e2056 | vm2 | ERROR | None | Running | demo_network=10.1.1.4 |
+--------------------------------------+------+--------+------------+-------------+-----------------------+
root@controller-vm:/usr/lib/python2.7/dist-packages/nova/scheduler#