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14.4. Power Management Elements

The power_management element provides users with the ability to set a power management configuration, which is required for host fencing. Certain sub-elements are required when configuring power_management.

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Table 14.2. Power management options
Element	Type	Description
`type=`	fencing device code	A list of valid fencing device codes are available in the `capabilities` collection.
`enabled`	Boolean: true or false	Indicates whether power management configuration is enabled or disabled.
`address`	string	The host name or IP address of the host.
`username`	string	A valid user name for power management.
`password`	string	A valid, robust password for power management.
`options`	complex	Fencing options for the selected `type=` specified with the option `name=""` and `value=""` strings.
`agents`	complex	Specifies fence agent options when multiple fences are used. Use the `order` sub-element to prioritize the fence agents. Agents are run sequentially according to their order until the fence action succeeds. When two or more fence agents have the same `order`, they are run concurrently. Other sub-elements include `type`, `ip`, `user`, `password`, and `options`.
`automatic_pm_enabled`	Boolean: true or false	Toggles the automated power control of the host in order to save energy. When set to `true`, the host will be automatically powered down if the cluster's load is low, and powered on again when required. This is set to `true` when a host is created, unless disabled by the user.
`kdump_detection`	Boolean: true or false	Toggles whether to determine if kdump is running on the host before it is shut down. When set to `true`, the host will not shut down during a kdump process. This is set to `true` when a host has power management enabled, unless disabled by the user.

The options element requires a list of option sub-elements. Each option requires a name and type attributes. Certain options are only available for specific fencing types as defined in the capabilities collection.

A new host includes an optional power_management configuration when POSTing to the host resource. The power_management configuration is updatable using a PUT request.

Example 14.3. An XML representation of a host's power management configuration

<host id="2ab5e1da-b726-4274-bbf7-0a42b16a0fc3"
  href="/ovirt-engine/api/hosts/2ab5e1da-b726-4274-bbf7-0a42b16a0fc3">
    <name>host1</name>
    ...
    <power_management type="ilo">
        <enabled>true</enabled>
        <address>192.168.1.107</address>
        <username>admin</username>
        <password>p@55w0Rd!</password>
        <options>
            <option name="secure" value="true"/>
            <option name="port" value="54345"/>
            <option name="slot" value="3"/>
        </options>
        <agents>
            <agent id="07f0b9ce-923a-4a96-a532-3c898fa8b6da">
                <type>apc</type>
                <order>1</order>
                <ip>192.168.1.111</ip>
                <user>example</user>
                <password>p@55w0rd!</password>
                <port>9</port>
                <options>
                    <option name="power_wait" value="5"/> 
                    <option name="secure" value="false"/>
                </options>
            </agent>
            <agent id="50c71ba2-8495-11e0-b931-e20e458819ed">
                <type>rsa</type>
                <order>2</order>
                <ip>192.168.1.112</ip>
                <user>example</user>
                <password>p@55w0rd!</password>
                <port>9</port>
                <options>
                    <option name="power_wait" value="5"/> 
                    <option name="secure" value="false"/>
                </options>
            </agent>
        </agents>
        <automatic_pm_enabled>true</automatic_pm_enabled>
        <kdump_detection>true</kdump_detection>
    </power_management>
    ...
</host>

<host id="2ab5e1da-b726-4274-bbf7-0a42b16a0fc3"
  href="/ovirt-engine/api/hosts/2ab5e1da-b726-4274-bbf7-0a42b16a0fc3">
    <name>host1</name>
    ...
    <power_management type="ilo">
        <enabled>true</enabled>
        <address>192.168.1.107</address>
        <username>admin</username>
        <password>p@55w0Rd!</password>
        <options>
            <option name="secure" value="true"/>
            <option name="port" value="54345"/>
            <option name="slot" value="3"/>
        </options>
        <agents>
            <agent id="07f0b9ce-923a-4a96-a532-3c898fa8b6da">
                <type>apc</type>
                <order>1</order>
                <ip>192.168.1.111</ip>
                <user>example</user>
                <password>p@55w0rd!</password>
                <port>9</port>
                <options>
                    <option name="power_wait" value="5"/> 
                    <option name="secure" value="false"/>
                </options>
            </agent>
            <agent id="50c71ba2-8495-11e0-b931-e20e458819ed">
                <type>rsa</type>
                <order>2</order>
                <ip>192.168.1.112</ip>
                <user>example</user>
                <password>p@55w0rd!</password>
                <port>9</port>
                <options>
                    <option name="power_wait" value="5"/> 
                    <option name="secure" value="false"/>
                </options>
            </agent>
        </agents>
        <automatic_pm_enabled>true</automatic_pm_enabled>
        <kdump_detection>true</kdump_detection>
    </power_management>
    ...
</host>

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14.4. Power Management Elements

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