Learn K8s

k8s.deployment.yml

#Basic Deployment Declaration with Liveness Probe
apiVersion: apps/v1
kind: Deployment 
metadata: 
  name: frontend
  labels: 
    app: my-nginx
    tier: frontend
spec: 
  selector: 
    matchLabels: 
      tier: frontend
  template: 
    metadata: 
      labels: 
        tier: frontend
    spec: 
      containers: 
      - name: my-nginx
        image: nginx:alpine
        livenessProbe: 
          httpGet: 
            path: /index.html
            port: 80 
          initialDelaySeconds: 15 
          timeoutSeconds: 2 
          periodSeconds: 5 
          failureThreshold: 1 

k8s.sh

# K8s Commands 

# Gets token to enable Web UI Dashboard locally: https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/ 
kubectl describe secret -n kube-system

# Pods
kubectl create -f [pod.name].pod.yml --dry-run --validate=true
kubectl create -f [pod.name].pod.yml --save-config 
kubectl apply  -f [pod.name].pod.yml
kubectl describe pod [pod.name]
kubectl exec [pod.name] -it sh
kubectl edit -f [pod.name].pod.yml
kubectl get pod [pod.name]
kubectl delete  -f [pod.name].pod.yml

# Deployments
kubectl create -f [deployment.name].deployment.yml --save-config 
kubectl apply  -f [deployment.name].deployment.yml
kubectl get deployments
kubectl get deployments --show-labels
kubectl get deployments -l tier=frontend 
kubectl delete deployment [deployment.name]
kubectl delete -f [deployment.name].deployment.yml
kubectl scale deployment [deployment.name] --replicas=5 
kubectl scale -f [deployment.name].deployment.yml --replicas=5