hardcode to yaml file (#7948)

* hardcode to yaml file

* add test instance.

* fix mistake

* fix mistake

* Uniform style

docs/tasks/debug-application-cluster/monitor-node-health.md

@@ -54,48 +54,10 @@ provides more flexible management, such as overwriting the default
 configuration to fit it into your environment or detect
 customized node problems.
 
-* **Step 1:** Create `node-problem-detector.yaml`:
+* **Step 1:** `node-problem-detector.yaml`:
+
+{% include code.html language="yaml" file="node-problem-detector.yaml" ghlink="/docs/tasks/debug-application-cluster/node-problem-detector.yaml" %}
 
-```yaml
-apiVersion: extensions/v1beta1
-kind: DaemonSet
-metadata:
-  name: node-problem-detector-v0.1
-  namespace: kube-system
-  labels:
-    k8s-app: node-problem-detector
-    version: v0.1
-    kubernetes.io/cluster-service: "true"
-spec:
-  template:
-    metadata:
-      labels:
-        k8s-app: node-problem-detector
-        version: v0.1
-        kubernetes.io/cluster-service: "true"
-    spec:
-      hostNetwork: true
-      containers:
-      - name: node-problem-detector
-        image: k8s.gcr.io/node-problem-detector:v0.1
-        securityContext:
-          privileged: true
-        resources:
-          limits:
-            cpu: "200m"
-            memory: "100Mi"
-          requests:
-            cpu: "20m"
-            memory: "20Mi"
-        volumeMounts:
-        - name: log
-          mountPath: /log
-          readOnly: true
-      volumes:
-      - name: log
-        hostPath:
-          path: /var/log/
-```
 
 ***Notice that you should make sure the system log directory is right for your
 OS distro.***
@@ -103,7 +65,7 @@ OS distro.***
 * **Step 2:** Start node problem detector with `kubectl`:
 
 ```shell
-kubectl create -f node-problem-detector.yaml
+ kubectl create -f https://k8s.io/docs/tasks/debug-application-cluster/node-problem-detector.yaml
 ```
 
 ### Addon Pod
@@ -128,58 +90,14 @@ following the steps:
 node-problem-detector-config --from-file=config/`.
 * **Step 3:** Change the `node-problem-detector.yaml` to use the ConfigMap:
 
-```yaml
+{% include code.html language="yaml" file="node-problem-detector-configmap.yaml" ghlink="/docs/tasks/debug-application-cluster/node-problem-detector-configmap.yaml" %}
-apiVersion: extensions/v1beta1
+
-kind: DaemonSet
-metadata:
-  name: node-problem-detector-v0.1
-  namespace: kube-system
-  labels:
-    k8s-app: node-problem-detector
-    version: v0.1
-    kubernetes.io/cluster-service: "true"
-spec:
-  template:
-    metadata:
-      labels:
-        k8s-app: node-problem-detector
-        version: v0.1
-        kubernetes.io/cluster-service: "true"
-    spec:
-      hostNetwork: true
-      containers:
-      - name: node-problem-detector
-        image: k8s.gcr.io/node-problem-detector:v0.1
-        securityContext:
-          privileged: true
-        resources:
-          limits:
-            cpu: "200m"
-            memory: "100Mi"
-          requests:
-            cpu: "20m"
-            memory: "20Mi"
-        volumeMounts:
-        - name: log
-          mountPath: /log
-          readOnly: true
-        - name: config # Overwrite the config/ directory with ConfigMap volume
-          mountPath: /config
-          readOnly: true
-      volumes:
-      - name: log
-        hostPath:
-          path: /var/log/
-      - name: config # Define ConfigMap volume
-        configMap:
-          name: node-problem-detector-config
-```
 
 * **Step 4:** Re-create the node problem detector with the new yaml file:
 
 ```shell
-kubectl delete -f node-problem-detector.yaml # If you have a node-problem-detector running
+ kubectl delete -f https://k8s.io/docs/tasks/debug-application-cluster/node-problem-detector.yaml # If you have a node-problem-detector running
-kubectl create -f node-problem-detector.yaml
+ kubectl create -f https://k8s.io/docs/tasks/debug-application-cluster/node-problem-detector-configmap.yaml
 ```
 
 ***Notice that this approach only applies to node problem detector started with `kubectl`.***

docs/tasks/debug-application-cluster/node-problem-detector-configmap.yaml

@@ -0,0 +1,49 @@
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: node-problem-detector-v0.1
+  namespace: kube-system
+  labels:
+    k8s-app: node-problem-detector
+    version: v0.1
+    kubernetes.io/cluster-service: "true"
+spec:
+  selector:
+    matchLabels:
+      k8s-app: node-problem-detector  
+      version: v0.1
+      kubernetes.io/cluster-service: "true"
+  template:
+    metadata:
+      labels:
+        k8s-app: node-problem-detector
+        version: v0.1
+        kubernetes.io/cluster-service: "true"
+    spec:
+      hostNetwork: true
+      containers:
+      - name: node-problem-detector
+        image: k8s.gcr.io/node-problem-detector:v0.1
+        securityContext:
+          privileged: true
+        resources:
+          limits:
+            cpu: "200m"
+            memory: "100Mi"
+          requests:
+            cpu: "20m"
+            memory: "20Mi"
+        volumeMounts:
+        - name: log
+          mountPath: /log
+          readOnly: true
+        - name: config # Overwrite the config/ directory with ConfigMap volume
+          mountPath: /config
+          readOnly: true
+      volumes:
+      - name: log
+        hostPath:
+          path: /var/log/
+      - name: config # Define ConfigMap volume
+        configMap:
+          name: node-problem-detector-config

docs/tasks/debug-application-cluster/node-problem-detector.yaml

@@ -0,0 +1,43 @@
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: node-problem-detector-v0.1
+  namespace: kube-system
+  labels:
+    k8s-app: node-problem-detector
+    version: v0.1
+    kubernetes.io/cluster-service: "true"
+spec:
+  selector:
+    matchLabels:
+      k8s-app: node-problem-detector  
+      version: v0.1
+      kubernetes.io/cluster-service: "true"
+  template:
+    metadata:
+      labels:
+        k8s-app: node-problem-detector
+        version: v0.1
+        kubernetes.io/cluster-service: "true"
+    spec:
+      hostNetwork: true
+      containers:
+      - name: node-problem-detector
+        image: k8s.gcr.io/node-problem-detector:v0.1
+        securityContext:
+          privileged: true
+        resources:
+          limits:
+            cpu: "200m"
+            memory: "100Mi"
+          requests:
+            cpu: "20m"
+            memory: "20Mi"
+        volumeMounts:
+        - name: log
+          mountPath: /log
+          readOnly: true
+      volumes:
+      - name: log
+        hostPath:
+          path: /var/log/

test/examples_test.go

@@ -427,6 +427,8 @@ func TestExampleObjectSchemas(t *testing.T) {
 			"fluentd-gcp-ds":        {&extensions.DaemonSet{}},
 			"nginx-dep":             {&extensions.Deployment{}},
 			"shell-demo":            {&api.Pod{}},
+			"node-problem-detector":        {&extensions.DaemonSet{}},
+			"node-problem-detector-configmap":        {&extensions.DaemonSet{}},
 			"termination":           {&api.Pod{}},
 		},
 		// TODO: decide whether federation examples should be added