OCPBUGS-59723: Add mechanism to delete MCN v1alpha1 CRD in 4.16+ clusters

install/0000_80_machine-config_00_v1alpha1-mcn-cleanup-job.yaml

@@ -0,0 +1,103 @@
+apiVersion: batch/v1
+kind: CronJob
+metadata:
+  name: machine-config-nodes-crd-cleanup
+  namespace: openshift-machine-config-operator
+  annotations:
+    include.release.openshift.io/self-managed-high-availability: "true"
+    include.release.openshift.io/single-node-developer: "true"
+    include.release.openshift.io/ibm-cloud-managed: "true"
+    release.openshift.io/feature-set: Default
+    # This prevent an update of this cronjob once the child job suspends on a successful run
+    release.openshift.io/create-only: "true"
+spec:
+  # Run every minute initially to trigger an immediate run
+  schedule: "* * * * *"  
+  # Don't suspend initially - let it run once
+  suspend: false  
+  # Only allow 1 concurrent job and prevent overlapping
+  concurrencyPolicy: Forbid  
+  jobTemplate:
+    spec:        
+      backOffLimit: 3      
+      template:
+        metadata:
+          labels:
+            app: machine-config-nodes-crd-cleanup
+          annotations:
+            target.workload.openshift.io/management: '{"effect": "PreferredDuringScheduling"}'
+            openshift.io/required-scc: nonroot-v2
+        spec:
+          serviceAccountName: machine-config-operator
+          restartPolicy: OnFailure
+          containers:
+          - name: crd-cleanup
+            image: placeholder.url.oc.will.replace.this.org/placeholdernamespace:rhel-coreos
+            terminationMessagePolicy: FallbackToLogsOnError
+            command:
+            - /bin/bash
+            - -c
+            - |
+              set -euo pipefail
+
+              # Set trap to suspend cronjob on successful exit (exit code 0)
+              trap 'if [ $? -eq 0 ]; then echo "Suspending cronjob..."; oc patch cronjob machine-config-nodes-crd-cleanup -p "{\"spec\":{\"suspend\":true}}" --field-manager=machine-config-operator || echo "Failed to suspend cronjob"; fi' EXIT
+
+              CRD_NAME="machineconfignodes.machineconfiguration.openshift.io"
+
+              echo "Checking for MachineConfigNodes CRD with v1alpha1 version..."
+
+              # Check if CRD exists
+              if ! oc get crd "$CRD_NAME" >/dev/null 2>&1; then
+                echo "CRD $CRD_NAME does not exist, nothing to clean up"
+                exit 0
+              fi
+
+              # Check if CRD has v1alpha1 version
+              HAS_V1ALPHA1=$(oc get crd "$CRD_NAME" -o jsonpath='{.spec.versions[?(@.name=="v1alpha1")].name}' 2>/dev/null || echo "")
+
+              if [ -z "$HAS_V1ALPHA1" ]; then
+                echo "CRD $CRD_NAME does not have v1alpha1 version, nothing to clean up"
+                exit 0
+              fi
+
+              echo "Found CRD $CRD_NAME with v1alpha1 version, deleting it..."
+
+              # Delete the CRD
+              if oc delete crd "$CRD_NAME"; then
+                echo "Successfully deleted CRD $CRD_NAME"
+              else
+                echo "Failed to delete CRD $CRD_NAME"
+                exit 1
+              fi
+
+              echo "CRD cleanup completed successfully"
+            resources:
+              requests:
+                cpu: 10m
+                memory: 50Mi
+            securityContext:
+              allowPrivilegeEscalation: false
+              capabilities:
+                drop:
+                - ALL
+          securityContext:
+            runAsNonRoot: true
+            runAsUser: 65534
+            seccompProfile:
+              type: RuntimeDefault
+          nodeSelector:
+            node-role.kubernetes.io/control-plane: ""
+          priorityClassName: "system-cluster-critical"
+          tolerations:
+          - effect: NoSchedule
+            key: node-role.kubernetes.io/master
+            operator: Exists
+          - effect: NoExecute
+            key: node.kubernetes.io/unreachable
+            operator: Exists
+            tolerationSeconds: 120
+          - effect: NoExecute
+            key: node.kubernetes.io/not-ready
+            operator: Exists
+            tolerationSeconds: 120