openstack-manuals/doc/user-guide-admin/section_cli_nova_services.xml

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XML

<?xml version="1.0" encoding="UTF-8"?>
<section xmlns="http://docbook.org/ns/docbook"
xmlns:xi="http://www.w3.org/2001/XInclude"
xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0"
xml:id="nova-manage-services">
<title>Manage Compute services</title>
<para>You can enable and disable Compute services. The following
examples disable and enable the <systemitem class="service"
>nova-compute</systemitem> service.</para>
<procedure>
<step>
<para>List the Compute services:</para>
<screen><prompt>$</prompt> <userinput>nova service-list</userinput>
<computeroutput>+------------------+----------+----------+---------+-------+----------------------------+-----------------+
| Binary | Host | Zone | Status | State | Updated_at | Disabled Reason |
+------------------+----------+----------+---------+-------+----------------------------+-----------------+
| nova-conductor | devstack | internal | enabled | up | 2013-10-16T00:56:08.000000 | None |
| nova-cert | devstack | internal | enabled | up | 2013-10-16T00:56:09.000000 | None |
| nova-compute | devstack | nova | enabled | up | 2013-10-16T00:56:07.000000 | None |
| nova-network | devstack | internal | enabled | up | 2013-10-16T00:56:06.000000 | None |
| nova-scheduler | devstack | internal | enabled | up | 2013-10-16T00:56:04.000000 | None |
| nova-consoleauth | devstack | internal | enabled | up | 2013-10-16T00:56:07.000000 | None |
+------------------+----------+----------+---------+-------+----------------------------+-----------------+</computeroutput></screen>
</step>
<step>
<para>Disable a nova service:</para>
<screen><prompt>$</prompt> <userinput>nova service-disable localhost.localdomain nova-compute --reason 'trial log'</userinput>
<computeroutput>+----------+--------------+----------+-------------------+
| Host | Binary | Status | Disabled Reason |
+----------+--------------+----------+-------------------+
| devstack | nova-compute | disabled | Trial log |
+----------+--------------+----------+-------------------+</computeroutput></screen>
</step>
<step>
<para>Check the service list:</para>
<screen><prompt>$</prompt> <userinput>nova service-list</userinput>
<computeroutput>+------------------+----------+----------+---------+-------+----------------------------+------------------+
| Binary | Host | Zone | Status | State | Updated_at | Disabled Reason |
+------------------+----------+----------+---------+-------+----------------------------+------------------+
| nova-conductor | devstack | internal | enabled | up | 2013-10-16T00:56:48.000000 | None |
| nova-cert | devstack | internal | enabled | up | 2013-10-16T00:56:49.000000 | None |
| nova-compute | devstack | nova | disabled | up | 2013-10-16T00:56:47.000000 | Trial log |
| nova-network | devstack | internal | enabled | up | 2013-10-16T00:56:51.000000 | None |
| nova-scheduler | devstack | internal | enabled | up | 2013-10-16T00:56:44.000000 | None |
| nova-consoleauth | devstack | internal | enabled | up | 2013-10-16T00:56:47.000000 | None |
+------------------+----------+----------+---------+-------+----------------------------+-----------------+</computeroutput></screen>
</step>
<step>
<para>Enable the service:</para>
<screen><prompt>$</prompt> <userinput>nova service-enable localhost.localdomain nova-compute</userinput>
<computeroutput>+----------+--------------+---------+
| Host | Binary | Status |
+----------+--------------+---------+
| devstack | nova-compute | enabled |
+----------+--------------+---------+</computeroutput></screen>
</step>
<step>
<para>Check the service list:</para>
<screen><prompt>$</prompt> <userinput>nova service-list</userinput>
<computeroutput>+------------------+----------+----------+---------+-------+----------------------------+-----------------+
| 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 |
+------------------+----------+----------+---------+-------+----------------------------+-----------------+</computeroutput></screen>
</step>
</procedure>
</section>