You can enable and disable Compute services. The following examples disable and
enable the nova-compute
service.
List the Compute services:
$ openstack compute service list
+----+----------------+------------+----------+---------+-------+----------------------------+
| ID | Binary | Host | Zone | Status | State | Updated At |
+----+----------------+------------+----------+---------+-------+----------------------------+
| 4 | nova-scheduler | controller | internal | enabled | up | 2016-12-20T00:44:48.000000 |
| 5 | nova-conductor | controller | internal | enabled | up | 2016-12-20T00:44:54.000000 |
| 8 | nova-compute | compute | nova | enabled | up | 2016-10-21T02:35:03.000000 |
+----+----------------+------------+----------+---------+-------+----------------------------+
Disable a nova service:
$ openstack compute service set --disable --disable-reason "trial log" compute nova-compute
+----------+--------------+----------+-------------------+
| Host | Binary | Status | Disabled Reason |
+----------+--------------+----------+-------------------+
| compute | nova-compute | disabled | trial log |
+----------+--------------+----------+-------------------+
Check the service list:
$ openstack compute service list
+----+----------------+------------+----------+---------+-------+----------------------------+
| ID | Binary | Host | Zone | Status | State | Updated At |
+----+----------------+------------+----------+---------+-------+----------------------------+
| 5 | nova-scheduler | controller | internal | enabled | up | 2016-12-20T00:44:48.000000 |
| 6 | nova-conductor | controller | internal | enabled | up | 2016-12-20T00:44:54.000000 |
| 9 | nova-compute | compute | nova | disabled| up | 2016-10-21T02:35:03.000000 |
+----+----------------+------------+----------+---------+-------+----------------------------+
Enable the service:
$ openstack compute service set --enable compute nova-compute
+----------+--------------+---------+
| Host | Binary | Status |
+----------+--------------+---------+
| compute | nova-compute | enabled |
+----------+--------------+---------+
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