bbec5aa4d2
The XML root element of Docbook XML files should match the following format: <ELEMENT 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="THE_XML_ID_OF_THE_ELEMENT"> Change-Id: If8d27898af12af2edc2d2d13557ec2365a241656
33 lines
1.7 KiB
XML
33 lines
1.7 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<section xmlns="http://docbook.org/ns/docbook"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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version="5.0"
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xml:id="nova_cli_host_servers_migrate">
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<title>Migrate all instances to another compute host</title>
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<para>When you want to move all instances from one compute host to
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another, you can use the <command>nova
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host-servers-migrate</command> command. The difference
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between this command and the <command>nova evacuate</command>
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command is that you can specify the host when evacuating. Also
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when evacuating, you must configure shared storage on the
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target host so that user data is preserved on the server disk.
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See <link xlink:href="http://docs.openstack.org/user-guide/content/nova_cli_evacuate.html">Evacuate instances</link>.</para>
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<procedure xml:id="migrate_host">
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<step>
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<para>To list the host you want to migrate, run:</para>
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<screen><prompt>$</prompt> <userinput>nova service-list</userinput></screen>
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</step>
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<step>
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<para>After selecting a host from the list, run this
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command:
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<screen><prompt>$</prompt> <userinput>nova host-servers-migrate <replaceable>HOST_NAME</replaceable></userinput></screen></para>
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<para>Where <replaceable>HOST_NAME</replaceable> is the
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name of the host you want the servers to go to.</para>
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<para>All instances are booted from a new host while preserving
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their current configurations, including ID, name, UUID, IP
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address, and so on.</para>
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</step>
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</procedure>
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</section>
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