Kubernetes Steps

  •         cd posts
        docker build -t rayalevinson/posts:0.0.1 .

    Result: docker.io/rayalevinson/posts:0.0.1

  • Under the project create

    infra --> k8s --> posts-depl.yaml

  • posts-depl.yaml 
      apiVersion: apps/v1
  kind: Deployment
  metadata:
    name: posts-depl
  spec:
    replicas: 1
    selector:
      matchLabels:
        app: posts
    template:
      metadata:
        labels:
          app: posts
      spec:
        containers:
          - name: posts
            image: docker.io/rayalevinson/posts:0.0.1
  • Create a deployment out of a config file

    cd myProject\infra\k8s

    kubectl apply -f posts-depl.yaml

    kubectl apply -f [config file name]

  • List all the running deployments

    kubectl get deployments

  • Deployment will recreate a pod tha was suddenly deleted / crashed

    kubectl get deployments

  • Print out information about all of the running pods

    kubectl get pods

  • Print out details about a specific deployment

    kubectl describe deployment [depl name]

    kubectl describe deployment posts-depl

  • Delete a deployment

    kubectl delete deployment [depl_name]

  • Execute the given command in a running pod

    kubectl exec -it [pod_name] [cmd]

    kubectl exec -it posts sh

    <--- run shell

    OR on Windows

    winpty kubectl exec -it posts sh

    <--- run shell
  • Print out logs from the given pod

    kubectl logs [pod_name]

    kubectl logs posts

  • Deletes the given pod

    kubectl delete pod [pod_name]

    kubectl delete pod posts

  • Tells kubernetes to process the config <------

    kubectl apply -f [config file name]

    kubectl apply -f posts.yaml

  • Print out some information about the running pod

    kubectl describe pod [pod_name]

    kubectl describe pod posts