Merge pull request #54202 from shiywang/force_apply

hack/make-rules/test-cmd-util.sh

@@ -1142,6 +1142,24 @@ run_kubectl_apply_deployments_tests() {
   kube::test::wait_object_assert replicasets "{{range.items}}{{$id_field}}:{{end}}" ''
   kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
 
+  # kubectl apply deployment --overwrite=true --force=true
+  # Pre-Condition: no deployment exists
+  kube::test::get_object_assert deployments "{{range.items}}{{$id_field}}:{{end}}" ''
+  # apply deployment nginx
+  kubectl apply -f hack/testdata/deployment-label-change1.yaml "${kube_flags[@]}"
+  # check right deployment exists
+  kube::test::get_object_assert 'deployment nginx' "{{${id_field}}}" 'nginx'
+  # apply deployment with wrong labels mismatch selector throws errors
+  output_message=$(! kubectl apply -f hack/testdata/deployment-label-change2.yaml 2>&1 "${kube_flags[@]}")
+  kube::test::if_has_string "${output_message}" 'Invalid value'
+  # apply deployment with --force and --overwrite will success
+  kubectl apply -f hack/testdata/deployment-label-change2.yaml --overwrite=true  --force=true --grace-period=10
+  # check the changed deployment
+  output_message=$(kubectl apply view-last-applied deploy/nginx -o json 2>&1 "${kube_flags[@]}" |grep nginx2)
+  kube::test::if_has_string "${output_message}" '"name": "nginx2"'
+  # cleanup
+  kubectl delete deployments --all --grace-period=10
+
   set +o nounset
   set +o errexit
 }

hack/testdata/deployment-label-change1.yaml

+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: nginx
+  labels:
+    name: nginx
+spec:
+  replicas: 3
+  template:
+    metadata:
+      labels:
+        name: nginx1
+    spec:
+      containers:
+      - name: nginx
+        image: gcr.io/google-containers/nginx:test-cmd
+        ports:
+        - containerPort: 80

hack/testdata/deployment-label-change2.yaml

+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: nginx
+  labels:
+    name: nginx
+spec:
+  replicas: 3
+  template:
+    metadata:
+      labels:
+        name: nginx2
+    spec:
+      containers:
+      - name: nginx
+        image: gcr.io/google-containers/nginx:test-cmd
+        ports:
+        - containerPort: 80