Add probe yaml examples

Author: giri.kuncoro

content/id/examples/pods/probe/exec-liveness.yaml

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+apiVersion: v1
+kind: Pod
+metadata:
+  labels:
+    test: liveness
+  name: liveness-exec
+spec:
+  containers:
+  - name: liveness
+    image: k8s.gcr.io/busybox
+    args:
+    - /bin/sh
+    - -c
+    - touch /tmp/healthy; sleep 30; rm -rf /tmp/healthy; sleep 600
+    livenessProbe:
+      exec:
+        command:
+        - cat
+        - /tmp/healthy
+      initialDelaySeconds: 5
+      periodSeconds: 5

content/id/examples/pods/probe/http-liveness.yaml

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+apiVersion: v1
+kind: Pod
+metadata:
+  labels:
+    test: liveness
+  name: liveness-http
+spec:
+  containers:
+  - name: liveness
+    image: k8s.gcr.io/liveness
+    args:
+    - /server
+    livenessProbe:
+      httpGet:
+        path: /healthz
+        port: 8080
+        httpHeaders:
+        - name: Custom-Header
+          value: Awesome
+      initialDelaySeconds: 3
+      periodSeconds: 3

content/id/examples/pods/probe/tcp-liveness-readiness.yaml

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+apiVersion: v1
+kind: Pod
+metadata:
+  name: goproxy
+  labels:
+    app: goproxy
+spec:
+  containers:
+  - name: goproxy
+    image: k8s.gcr.io/goproxy:0.1
+    ports:
+    - containerPort: 8080
+    readinessProbe:
+      tcpSocket:
+        port: 8080
+      initialDelaySeconds: 5
+      periodSeconds: 10
+    livenessProbe:
+      tcpSocket:
+        port: 8080
+      initialDelaySeconds: 15
+      periodSeconds: 20