Consolidate YAML files [part-8] (#9347)

* Consolidate YAML files [part-8]

This PR exacts the YAML files referenced from the following subdirs:

- docs/concepts/workloads
- docs/concepts/configuration
- docs/concepts/policy

The following problems are fixed:

- docs/concepts/workloads/controllers/ doesnt have a 'cronjob.yaml for
  test
- the exactly same `pod.yaml` was used in both the task/config-pod-container
  topic and the concepts/configuration topics.

* Update examples_test.go

* Add missing yaml file.

content/en/examples/controllers/daemonset.yaml

@@ -0,0 +1,42 @@
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: fluentd-elasticsearch
+  namespace: kube-system
+  labels:
+    k8s-app: fluentd-logging
+spec:
+  selector:
+    matchLabels:
+      name: fluentd-elasticsearch
+  template:
+    metadata:
+      labels:
+        name: fluentd-elasticsearch
+    spec:
+      tolerations:
+      - key: node-role.kubernetes.io/master
+        effect: NoSchedule
+      containers:
+      - name: fluentd-elasticsearch
+        image: k8s.gcr.io/fluentd-elasticsearch:1.20
+        resources:
+          limits:
+            memory: 200Mi
+          requests:
+            cpu: 100m
+            memory: 200Mi
+        volumeMounts:
+        - name: varlog
+          mountPath: /var/log
+        - name: varlibdockercontainers
+          mountPath: /var/lib/docker/containers
+          readOnly: true
+      terminationGracePeriodSeconds: 30
+      volumes:
+      - name: varlog
+        hostPath:
+          path: /var/log
+      - name: varlibdockercontainers
+        hostPath:
+          path: /var/lib/docker/containers

content/en/examples/controllers/frontend.yaml

@@ -0,0 +1,39 @@
+apiVersion: apps/v1
+kind: ReplicaSet
+metadata:
+  name: frontend
+  labels:
+    app: guestbook
+    tier: frontend
+spec:
+  # this replicas value is default
+  # modify it according to your case
+  replicas: 3
+  selector:
+    matchLabels:
+      tier: frontend
+    matchExpressions:
+      - {key: tier, operator: In, values: [frontend]}
+  template:
+    metadata:
+      labels:
+        app: guestbook
+        tier: frontend
+    spec:
+      containers:
+      - name: php-redis
+        image: gcr.io/google_samples/gb-frontend:v3
+        resources:
+          requests:
+            cpu: 100m
+            memory: 100Mi
+        env:
+        - name: GET_HOSTS_FROM
+          value: dns
+          # If your cluster config does not include a dns service, then to
+          # instead access environment variables to find service host
+          # info, comment out the 'value: dns' line above, and uncomment the
+          # line below.
+          # value: env
+        ports:
+        - containerPort: 80

content/en/examples/controllers/hpa-rs.yaml

@@ -0,0 +1,11 @@
+apiVersion: autoscaling/v1
+kind: HorizontalPodAutoscaler
+metadata:
+  name: frontend-scaler
+spec:
+  scaleTargetRef:
+    kind: ReplicaSet
+    name: frontend
+  minReplicas: 3
+  maxReplicas: 10
+  targetCPUUtilizationPercentage: 50

content/en/examples/controllers/job.yaml

@@ -0,0 +1,14 @@
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: pi
+spec:
+  template:
+    spec:
+      containers:
+      - name: pi
+        image: perl
+        command: ["perl",  "-Mbignum=bpi", "-wle", "print bpi(2000)"]
+      restartPolicy: Never
+  backoffLimit: 4
+

content/en/examples/controllers/nginx-deployment.yaml

@@ -0,0 +1,21 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+  labels:
+    app: nginx
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      app: nginx
+  template:
+    metadata:
+      labels:
+        app: nginx
+    spec:
+      containers:
+      - name: nginx
+        image: nginx:1.7.9
+        ports:
+        - containerPort: 80

content/en/examples/controllers/replicaset.yaml

@@ -0,0 +1,17 @@
+apiVersion: apps/v1
+kind: ReplicaSet
+metadata:
+  name: my-repset
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      pod-is-for: garbage-collection-example
+  template:
+    metadata:
+      labels:
+        pod-is-for: garbage-collection-example
+    spec:
+      containers:
+      - name: nginx
+        image: nginx

content/en/examples/controllers/replication.yaml

@@ -0,0 +1,19 @@
+apiVersion: v1
+kind: ReplicationController
+metadata:
+  name: nginx
+spec:
+  replicas: 3
+  selector:
+    app: nginx
+  template:
+    metadata:
+      name: nginx
+      labels:
+        app: nginx
+    spec:
+      containers:
+      - name: nginx
+        image: nginx
+        ports:
+        - containerPort: 80