README.md

Liveness & Readiness Probe

Liveness & Readiness Probe
Tips and Tricks

For simulated Practice problems visit KillerCoda.

1. create a pod vids with image nginx. Add a readiness probe to the container to exec ls command on it.

   Solution

   ```bash # generate pod yaml k run vids --image=nginx --dry-run=client -o yaml > pod.yaml

   update metadata of pod yaml

   apiVersion: v1 kind: Pod metadata: creationTimestamp: null labels: run: vids name: vids spec: containers: - image: nginx name: vids readinessProbe: exec: command: - ls resources: {} dnsPolicy: ClusterFirst restartPolicy: Always status: {}

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2. create a pod aided with image nginx expose port 80 on the container. Add a readiness probe to make http get request on port 80.

   Solution

   ```bash # generate pod yaml k run aided --image=nginx --dry-run=client -o yaml

   update metadata of pod yaml

   apiVersion: v1 kind: Pod metadata: creationTimestamp: null labels: run: aided name: aided spec: containers: - image: nginx name: aided ports: - containerPort: 80 readinessProbe: httpGet: path: / port: 80 resources: {} dnsPolicy: ClusterFirst restartPolicy: Always status: {}

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3. create a pod baldr with image busybox execute sleep 3600 command on the container. Add a liveness probe to execute command env & add initial delay of 5 seconds to it.

   Solution

   ```bash # generate pod yaml k run baldr --image=busybox --dry-run=client -o yaml > pod.yaml

   update metadata of pod yaml

   apiVersion: v1 kind: Pod metadata: creationTimestamp: null labels: run: baldr name: baldr spec: containers: - image: busybox name: baldr command: ["sh","-c","sleep 3600"] livenessProbe: exec: command: - env initialDelaySeconds: 5 resources: {} dnsPolicy: ClusterFirst restartPolicy: Always status: {}

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4. create a pod frigg with image nginx expose port 80 on the container. Add a liveness probe on container with initial delay of 5seconds & at a period of 3 seconds with failure threshold set to 8.

   Solution

   ```bash # generate pod yaml k run frigg --image=nginx --dry-run=client -o yaml > pod.yaml

   update metadata of pod yaml

   apiVersion: v1 kind: Pod metadata: creationTimestamp: null labels: run: frigg name: frigg spec: containers: - image: nginx name: frigg ports: - containerPort: 80 livenessProbe: httpGet: path: / port: 80 initialDelaySeconds: 5 periodSeconds: 3 failureThreshold: 8 resources: {} dnsPolicy: ClusterFirst restartPolicy: Always status: {}

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