openstack/openstack-manuals
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openstack-manuals/doc/user-guide-admin/source/cli_nova_specify_host.rst
venkatamahesh d14d182507 Revert "[user-guide-admin] Fix an empty line in code-blocks" 
This is reverted according to updated documentation contributor
guide. For reference
http://docs.openstack.org/contributor-guide/rst-conv/source-code.html

This reverts commit 2c69f6f387.

Change-Id: Ied74704fe4ff36497039a01b8a140930fd209d60
2016-01-13 17:06:25 +00:00

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Select hosts where instances are launched

With the appropriate permissions, you can select which host instances are launched on and which roles can boot instances on this host.

  1. To select the host where instances are launched, use the --availability_zone ZONE:HOST parameter on the nova boot command.

    For example:

    $ nova boot --image <uuid> --flavor m1.tiny --key_name test --availability-zone nova:server2

  2. To specify which roles can launch an instance on a specified host, enable the create:forced_host option in the policy.json file. By default, this option is enabled for only the admin role.

  3. To view the list of valid compute hosts, use the nova hypervisor-list command.

    $ nova hypervisor-list
+----+---------------------+
| ID | Hypervisor hostname |
+----+---------------------+
| 1  | server2             |
| 2  | server3             |
| 3  | server4             |
+----+---------------------+