minikube.md

Hands-On with Basic Kubernetes Commands

• Starting Minikube
  • Ensure Minikube is running:

    minikube start

• kubectl Commands
  • Get cluster information:

    kubectl cluster-info

  • List nodes:

    kubectl get nodes

  • List namespaces:

    kubectl get namespaces

  • Access the Kubernetes dashboard

    minikube dashboard

Push your Image to Docker Hub

• Tag my-fast-api:1.0 image to <docker-hub-username>/my-fast-api:1.0

  docker tag my-fastapi-app:1.0 jayanth00003/my-fastapi-app:1.0

• Log in to Docker Hub

  docker login

• Push my-fast-api:1.0 image to your Docker Hub account

  docker push jayanth00003/my-fastapi-app:1.0

Deploying Applications in Kubernetes

• Creating a Deployment

  • Create a simple fastapi deployment:

    kubectl create deployment fastapi --image=jayanth00003/my-fastapi-app:1.0

  • View the deployment and pods:

    kubectl get deployments
    kubectl get pods

• Exposing the Deployment

  • Expose fastapi deployment as a service:

    kubectl expose deployment fastapi --type=NodePort --port=8000

  • Get the service details:

    kubectl get services

  • Access the fastapi service using Minikube:

    minikube service fastapi

  • Forward the port:

    kubectl port-forward service/fastapi 7080:8000

Scaling and Updating Applications

• Scaling the Deployment
  • Scale fastapi deployment to 3 replicas:

    kubectl scale deployment fastapi --replicas=3

  • Verify the scaling:

    kubectl get pods

• Updating the Deployment
  • Update the fastapi image version:

    kubectl set image deployment/fastapi my-fastapi-app=jayanth00003/my-fastapi-app:2.0

  • Verify the update:

    kubectl rollout status deployment/fastapi

  • Check the pod versions:

    kubectl get pods -o wide

• Manage your cluster
  • Pause Kubernetes:

    minikube pause

  • Unpause a paused instance:

    minikube unpause

  • Halt the cluster:

    minikube stop

  • Start the cluster:

    minikube start

  • Delete all of the minikube clusters:

    minikube delete --all