To automate region and zone labels

Signed-off-by: Aishwarya Kamat <aishwarya.kamat@ibm.com>

examples/install_vars.yaml

@@ -27,6 +27,14 @@ fips_compliant: false
 
 rsct_image: "quay.io/powercloud/rsct-ppc64le:latest"
 
+set_node_labels: false
+
+region: ""
+
+zone: ""
+
+system_type: ""
+
 chronyconfig:
    enabled: false
    content:

playbooks/roles/ocp-customization/README.md

@@ -16,6 +16,10 @@ Use this to modify kernel tunables for nodes/pods via [tuned operator](https://d
 Use this to deploy containerized version of [RSCT](https://www.ibm.com/support/knowledgecenter/SGVKBA) on every OCP node running on PowerVM infrastructure.  
 This is enabled by default when deploying OCP in PowerVM or PowerVS. Follow the instructions provided [here](/docs/rsct-deploy.md) to deploy RSCT on an existing OCP cluster. 
 
+**4. Automate setting of Node Labels
+
+Use this to automate setting of Node Labels for Region, Zone and Instance-type on PowerVS. This refers to the [Well-known Labels document](https://kubernetes.io/docs/reference/labels-annotations-taints).
+
 Requirements
 ------------
 
@@ -32,7 +36,10 @@ Role Variables
 | sysctl_tuned_options    | no       | false       | Set to true to apply sysctl options via tuned operator |
 | powervm_rmc             | no       | true           | Set to true to deploy RMC daemonset on Node with arch ppc64le |
 | rsct_image              | no       | quay.io/powercloud/rsct-ppc64le:latest | Change to your own registry if you install without internet connection |
-
+| set_node_labels         | no       | false          | Set to true to set the node labels          |
+| region                  | no       | ""             | IBM Cloud PowerVS service instance region. eg. mon |
+| zone                    | no       | ""             | IBM Cloud PowerVS service instance zone. eg. mon01 |
+| system_type             | no       | ""             | IBM Cloud PowerVS service instance zone. eg. mon01 |
 
 If `sysctl_tuned_options` is true then the following variables are must and should be set in [vars/tuned.yaml](./vars/tuned.yaml)
 

playbooks/roles/ocp-customization/defaults/main.yaml

@@ -6,3 +6,7 @@ rhcos_kernel_options: []
 sysctl_tuned_options: false
 powervm_rmc: true
 rsct_image: "quay.io/powercloud/rsct-ppc64le:latest"
+set_node_labels: false
+region: ""
+zone: ""
+system_type: ""

playbooks/roles/ocp-customization/tasks/main.yaml

@@ -53,3 +53,7 @@
       loop:
         - master
         - worker
+
+- name: Automate Node Labels
+  when: set_node_labels
+  import_tasks: node-label.yaml

playbooks/roles/ocp-customization/tasks/node-label.yaml

@@ -0,0 +1,17 @@
+---
+- name: Get all Nodes
+  shell: "oc get nodes | awk '(NR>1) { print $1 }'"
+  register: node_names
+
+- name: Automate Node labels
+  k8s:
+    state: present
+    kind: Node
+    name: "{{ item }}"
+    definition:
+      metadata:
+        labels:
+          topology.kubernetes.io/region: "{{ region }}"
+          topology.kubernetes.io/zone: "{{ zone }}"
+          node.kubernetes.io/instance-type: "{{ system_type }}"
+  with_items: "{{ node_names.stdout_lines }}"