Automation to validate autoscaling of nodes on IPI cluster

Signed-off-by: prajwal-gawande492 <[email protected]>

Author: prajwal-gawande492

README.md

@@ -53,6 +53,7 @@ This repository consists of additional ansible playbooks for the following:
 1. Verify IPI day2 operations
 1. Deploy Openshift Data Foundation operator
 1. Enabling Kdump
+1. Validate Autoscaling of nodes on IPI cluster
 
 ## Assumptions:
 

examples/all.yaml

@@ -1,5 +1,9 @@
 ---
 
+## node-autoscaling required vars
+autoscaling_enabled: false
+
+
 ## clusterresourceoverride-operator role variables
 cro_role_enable: false
 cro_e2e: false

examples/ocp_node_autoscaling_vars.yaml

@@ -0,0 +1,2 @@
+## node-autoscaling required vars
+autoscaling_enabled: false

playbooks/main.yml

@@ -1,4 +1,7 @@
 ---
+- import_playbook: ocp-node-autoscaling.yml
+  when: ocp-node-autoscaling is defined and ocp-node-autoscaling
+
 - import_playbook: ocp-scale.yml
   when: scale_test_enabled
 

playbooks/ocp-node-autoscaling.yml

@@ -0,0 +1,5 @@
+---
+- name: Validate autoscaling of nodes on PowerVS IPI
+  hosts: localhost
+  roles:
+    - ocp-node-autoscaling

playbooks/roles/ocp-node-autoscaling/README.md

@@ -0,0 +1,48 @@
+OCP Autoscaling of Nodes on IPI (Installer Provision Infrastructure) cluster
+=========
+This ansible playbook can be used for Validating the autoscaling of nodes, by scaling up and down the machines using machineAutoscaler and clusterAutoscaler functions.
+
+This playbook verifies two Autoscaling functions:
+1. Scale Up
+2. Scale Down
+
+
+Requirements
+------------
+
+- Access to the cluster as a user with the cluster-admin role.
+- The cluster is in a known good state, without any errors.
+
+
+Role Variables
+--------------
+
+| Variable                    | Required | Default                                    | Comments                                            |
+|-----------------------------|----------|--------------------------------------------|-----------------------------------------------------|
+| autoscaling_enabled| no | false  | Flag to be set to true to run this playbook  |
+
+Dependencies
+------------
+
+ - None
+ 
+Example Playbook
+----------------
+```
+---
+- name: Validate autoscaling of nodes on PowerVS IPI
+  hosts: localhost
+  roles:
+    - ocp-node-autoscaling
+```
+
+License
+-------
+
+See LICENCE.txt
+
+Author Information
+------------------
+
+[email protected]
+

playbooks/roles/ocp-node-autoscaling/defaults/main.yml

@@ -0,0 +1,2 @@
+# node-autoscaling required vars
+autoscaling_enabled: false

playbooks/roles/ocp-node-autoscaling/files/busybox.yaml

@@ -0,0 +1,42 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app: busybox
+  name: busybox-deployment
+  namespace: test
+spec:
+  progressDeadlineSeconds: 600
+  replicas: 2
+  revisionHistoryLimit: 10
+  selector:
+    matchLabels:
+      app: busybox
+  strategy:
+    rollingUpdate:
+      maxSurge: 25%
+      maxUnavailable: 25%
+    type: RollingUpdate
+  template:
+    metadata:
+      creationTimestamp: null
+      labels:
+        app: busybox
+    spec:
+      containers:
+      - name: busybox
+        image: busybox:latest
+        command:
+          - sleep
+          - "3600"
+        resources:
+          requests:
+            cpu: "4"
+            memory: 14G
+        terminationMessagePath: /dev/termination-log
+        terminationMessagePolicy: File
+      dnsPolicy: ClusterFirst
+      restartPolicy: Always
+      schedulerName: default-scheduler
+      securityContext: {}
+      terminationGracePeriodSeconds: 30