71 lines
2.3 KiB
ReStructuredText
71 lines
2.3 KiB
ReStructuredText
=========================================
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Select hosts where instances are launched
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=========================================
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With the appropriate permissions, you can select which host instances are
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launched on and which roles can boot instances on this host.
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#. To select the host where instances are launched, use the
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``--availability-zone ZONE:HOST:NODE`` parameter on the :command:`openstack
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server create` command.
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For example:
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.. code-block:: console
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$ openstack server create --image IMAGE --flavor m1.tiny \
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--key-name KEY --availability-zone ZONE:HOST:NODE \
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--nic net-id=UUID SERVER
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.. note::
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HOST and NODE are optional parameters. In such cases, use the
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``--availability-zone ZONE::NODE``, ``--availability-zone ZONE:HOST`` or
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``--availability-zone ZONE``.
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#. To specify which roles can launch an instance on a specified host, enable
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the ``create:forced_host`` option in the ``policy.json`` file. By default,
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this option is enabled for only the admin role. If you see ``Forbidden (HTTP
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403)`` in return, then you are not using admin credentials.
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#. To view the list of valid zones, use the :command:`openstack availability
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zone list` command.
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.. code-block:: console
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$ openstack availability zone list
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+-----------+-------------+
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| Zone Name | Zone Status |
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+-----------+-------------+
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| zone1 | available |
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| zone2 | available |
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+-----------+-------------+
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#. To view the list of valid compute hosts, use the :command:`openstack host
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list` command.
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.. code-block:: console
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$ openstack host list
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+----------------+-------------+----------+
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| Host Name | Service | Zone |
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+----------------+-------------+----------+
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| compute01 | compute | nova |
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| compute02 | compute | nova |
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+----------------+-------------+----------+
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#. To view the list of valid compute nodes, use the :command:`openstack
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hypervisor list` command.
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.. code-block:: console
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$ openstack hypervisor list
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+----+---------------------+
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| ID | Hypervisor Hostname |
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+----+---------------------+
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| 1 | server2 |
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| 2 | server3 |
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| 3 | server4 |
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+----+---------------------+
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