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docs/doc/source/node_management/openstack/using-labels-to-identify-openstack-nodes.rst
Ron Stone cf66f5d279 Armada Deprecation and Replacement 
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Story: 2009138
Task: 45238

Signed-off-by: Ron Stone <ronald.stone@windriver.com>
Change-Id: Ia40ff45f12ec7b7ffa859e0d8bb5535303870d83
2022-06-29 10:40:56 -04:00

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Use Labels to Identify OpenStack Nodes

The application is deployed on the nodes of the based on node labels.

Prior to initially installing the application or when adding nodes to a deployment, you need to label the nodes appropriately for their OpenStack role.

starlingx

Table 1. Common OpenStack Labels
Label Worker/Controller Description
openstack-control-plane
  • Controller
  • All-in-One Controller
 Identifies a node to deploy openstack controller services on.
openstack-compute-node Worker

Identifies a node to deploy openstack compute agents on.

Note

Adding or removing this label, or removing a node with this label from a cluster, triggers the regeneration and application of the helm chart overrides of the openstack application.
sriov
  • Worker
  • All-in-One Controller
 Identifies a node as supporting sr-iov.

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For more information. see : Configuring Node Labels from The CLI <assigning-node-labels-from-the-cli>.

Nodes must be locked before labels can be assigned or removed.

starlingx

  1. To assign Kubernetes labels to identify compute-0 as a compute node with and SRIOV, use the following command:

    ~(keystone)admin)$ system host-label-assign compute-0 openstack-compute-node=enabled sriov=enabled
+-------------+--------------------------------------+
| Property    | Value                                |
+-------------+--------------------------------------+
| uuid        | 2909d775-cd6c-4bc1-8268-27499fe38d5e |
| host_uuid   | 1f00d8a4-f520-41ee-b608-1b50054b1cd8 |
| label_key   | openstack-compute-node               |
| label_value | enabled                              |
+-------------+--------------------------------------+
+-------------+--------------------------------------+
| Property    | Value                                |
+-------------+--------------------------------------+
| uuid        | d8e29e62-4173-4445-886c-9a95b0d6fee1 |
| host_uuid   | 1f00d8a4-f520-41ee-b608-1b50054b1cd8 |
| label_key   | sriov                                |
| label_value | enabled                              |
+-------------+--------------------------------------+

  2. To remove the labels from the host, do the following.

    ~(keystone)admin)$ system host-label-remove compute-0 openstack-compute-node sriov
Deleted host label openstack-compute-node for host compute-0
Deleted host label sriov for host compute-0

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