K8s health probes cheatsheet

kubectl.md

deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: quickstart-mp-deployment
  labels:
    app: quickstart-mp
spec:
  selector:
    matchLabels:
      app: quickstart-mp
  template:
    metadata:
      labels:
        app: quickstart-mp
    spec:
      containers:
      - name: quickstart-mp
        image: localhost:32000/quickstart-mp:latest
        ports:
        - containerPort: 8080
        livenessProbe:
          httpGet:
            path: /health/live
            port: 8080
          initialDelaySeconds: 3
          periodSeconds: 3

Build image tagged for microk8s's bundled registry

docker build . -t localhost:32000/quickstart-mp:latest

Push to microk8s's bundled registry

docker push localhost:32000/quickstart-mp:latest

Create deployment

kubectl apply -f deployment.yaml

Expose ports

kubectl expose deployment quickstart-mp-deployment --port 8080 --type=LoadBalancer

Tailf with grep

kubectl logs -f `kubectl get pods --template '{{range .items}}{{.metadata.name}}{{"\n"}}{{end}}' | grep quick`