openstack-manuals/doc/admin-guide/source/cli-nova-manage-services.rst

Manage Compute services

You can enable and disable Compute services. The following examples disable and enable the nova-compute service.

1. List the Compute services:

   $ nova service-list
   +------------------+----------+----------+---------+-------+----------------------------+-----------------+
   | Binary           | Host     | Zone     | Status  | State | Updated_at                 | Disabled Reason |
   +------------------+----------+----------+---------+-------+----------------------------+-----------------+
   | nova-conductor   | devstack | internal | enabled | up    | 2013-10-16T00:56:08.000000 | None            |
   | nova-cert        | devstack | internal | enabled | up    | 2013-10-16T00:56:09.000000 | None            |
   | nova-compute     | devstack | nova     | enabled | up    | 2013-10-16T00:56:07.000000 | None            |
   | nova-network     | devstack | internal | enabled | up    | 2013-10-16T00:56:06.000000 | None            |
   | nova-scheduler   | devstack | internal | enabled | up    | 2013-10-16T00:56:04.000000 | None            |
   | nova-consoleauth | devstack | internal | enabled | up    | 2013-10-16T00:56:07.000000 | None            |
   +------------------+----------+----------+---------+-------+----------------------------+-----------------+

2. Disable a nova service:

   $ nova service-disable localhost.localdomain nova-compute --reason 'trial log'
   +----------+--------------+----------+-------------------+
   | Host     | Binary       | Status   | Disabled Reason   |
   +----------+--------------+----------+-------------------+
   | devstack | nova-compute | disabled | Trial log         |
   +----------+--------------+----------+-------------------+

3. Check the service list:

   $ nova service-list
   +------------------+----------+----------+---------+-------+----------------------------+------------------+
   | Binary           | Host     | Zone     | Status   | State | Updated_at                 | Disabled Reason |
   +------------------+----------+----------+---------+-------+----------------------------+------------------+
   | nova-conductor   | devstack | internal | enabled  | up    | 2013-10-16T00:56:48.000000 | None            |
   | nova-cert        | devstack | internal | enabled  | up    | 2013-10-16T00:56:49.000000 | None            |
   | nova-compute     | devstack | nova     | disabled | up    | 2013-10-16T00:56:47.000000 | Trial log       |
   | nova-network     | devstack | internal | enabled  | up    | 2013-10-16T00:56:51.000000 | None            |
   | nova-scheduler   | devstack | internal | enabled  | up    | 2013-10-16T00:56:44.000000 | None            |
   | nova-consoleauth | devstack | internal | enabled  | up    | 2013-10-16T00:56:47.000000 | None            |
   +------------------+----------+----------+---------+-------+----------------------------+------------------+

4. Enable the service:

   $ nova service-enable localhost.localdomain nova-compute
   +----------+--------------+---------+
   | Host     | Binary       | Status  |
   +----------+--------------+---------+
   | devstack | nova-compute | enabled |
   +----------+--------------+---------+

5. Check the service list:

   $ nova service-list
   +------------------+----------+----------+---------+-------+----------------------------+-----------------+
   | Binary           | Host     | Zone     | Status  | State | Updated_at                 | Disabled Reason |
   +------------------+----------+----------+---------+-------+----------------------------+-----------------+
   | nova-conductor   | devstack | internal | enabled | up    | 2013-10-16T00:57:08.000000 | None            |
   | nova-cert        | devstack | internal | enabled | up    | 2013-10-16T00:57:09.000000 | None            |
   | nova-compute     | devstack | nova     | enabled | up    | 2013-10-16T00:57:07.000000 | None            |
   | nova-network     | devstack | internal | enabled | up    | 2013-10-16T00:57:11.000000 | None            |
   | nova-scheduler   | devstack | internal | enabled | up    | 2013-10-16T00:57:14.000000 | None            |
   | nova-consoleauth | devstack | internal | enabled | up    | 2013-10-16T00:57:07.000000 | None            |
   +------------------+----------+----------+---------+-------+----------------------------+-----------------+