Adding tutorials for k8s basics

1_create_kubernetes_cluster/kubectl.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+kubectl create deployment hello-node --image=registry.k8s.io/e2e-test-images/agnhost:2.39 -- /agnhost netexec --http-port=8080
+
+kubectl get deployments
+
+kubectl get pods
+
+kubectl get events
+
+kubectl config view
+
+kubectl logs 

1_create_kubernetes_cluster/kubectl_addons.sh

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+#!/usr/bin/env bash
+
+kubectl delete service hello-node
+kubectl delete deployment hello-node
+
+minikube stop

1_create_kubernetes_cluster/kubectl_cleanup.sh

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+#!/usr/bin/env bash
+
+kubectl create deployment hello-node --image=registry.k8s.io/e2e-test-images/agnhost:2.39 -- /agnhost netexec --http-port=8080
+
+kubectl get deployments
+
+kubectl get pods
+
+kubectl get events
+
+kubectl config view
+
+kubectl logs 

1_create_kubernetes_cluster/kubectl_service.sh

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+#!/usr/bin/env bash
+
+kubectl expose deployment hello-node --type=LoadBalancer --port=8080
+
+kubectl get services
+
+minikube service hello-node

1_create_kubernetes_cluster/minikube_start.sh

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+#!/usr/bin/env bash
+
+minikube start
+
+minikube dashboard

2_deploy_an_app/kubectl_deploy.sh

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+#!/usr/bin/env bash
+
+kubectl create deployment kubernetes-bootcamp --image=gcr.io/google-samples/kubernetes-bootcamp:v1
+
+kubectl get deployments

2_deploy_an_app/kubectl_proxy.sh

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+#!/usr/bin/env bash
+
+kubectl proxy
+
+export POD_NAME=$(kubectl get pods -o go-template --template '{{range .items}}{{.metadata.name}}{{"\n"}}{{end}}')
+echo Name of the Pod: $POD_NAME
+
+curl http://localhost:8001/api/v1/namespaces/default/pods/$POD_NAME/

3_explore_your_app/kubectl_toubleshooting.sh

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+#!/usr/bin/env bash
+
+PODE_NAME=$1
+
+kubectl get pods
+
+kubectl describe pods
+
+kubectl logs $PODE_NAME
+
+kubectl exec $POD_NAME -- ls
+
+curl http://localhost:8001
+
+curl http://localhost:8001/api/v1/namespaces/default/pods/$POD_NAME:8080/proxy/

4_expose_your_app/kubectl_labels.sh

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+#!/usr/bin/env bash
+
+kubectl describe deployment
+
+kubectl get pods -l app=kubernetes-bootcamp
+
+kubectl get services -l app=kubernetes-bootcamp
+
+export POD_NAME="$(kubectl get pods -o go-template --template '{{range .items}}{{.metadata.name}}{{"\n"}}{{end}}')"
+echo "Name of the Pod: $POD_NAME"
+
+kubectl label pods "$POD_NAME" version=v1
+
+kubectl describe pods "$POD_NAME"
+
+kubectl get pods -l version=v1
+
+kubectl delete service -l app=kubernetes-bootcamp
+
+kubectl exec -ti $POD_NAME -- curl http://localhost:8080

4_expose_your_app/kubectl_services.sh

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+#!/usr/bin/env bash
+
+kubectl get pods
+
+kubectl get services
+
+kubectl expose deployment/kubernetes-bootcamp --type="NodePort" --port 8080
+
+kubectl get services
+
+kubectl describe services/kubernetes-bootcamp
+
+export NODE_PORT="$(kubectl get services/kubernetes-bootcamp -o go-template='{{(index .spec.ports 0).nodePort}}')"
+echo "NODE_PORT=$NODE_PORT"
+
+curl http://"$(minikube ip):$NODE_PORT"

4_expose_your_app/kubectl_tunnel.sh

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+#!/usr/bin/env bash
+
+minikube service kubernetes-bootcamp --url

5_scale_app/kubectl_scale.sh

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+#!/usr/bin/env bash
+
+kubectl get deployments
+
+kubectl get rs
+
+kubectl scale deployments/kubernetes-bootcamp --replicas=4
+
+kubectl get deployments
+
+kubectl get pods -o wide
+
+kubectl describe deployments/kubernetes-bootcamp
+
+kubectl describe services/kubernetes-bootcamp 
+
+export NODE_PORT="$(kubectl get services/kubernetes-bootcamp -o go-template='{{(index .spec.ports 0).nodePort}}')"
+
+echo NODE_PORT=$NODE_PORT
+
+curl http://"$(minikube ip):$NODE_PORT"
+
+kubectl scale deployments/kubernetes-bootcamp --replicas=2
+
+kubectl get deployments
+
+kubectl get pods -o wide

5_scale_app/kubectl_tunnel.sh

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+#!/usr/bin/env bash
+
+minikube service kubernetes-bootcamp --url

6_update_app/kubectl_rollback.sh

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+#!/usr/bin/env bash
+
+kubectl set image deployments/kubernetes-bootcamp kubernetes-bootcamp=gcr.io/google-samples/kubernetes-bootcamp:v10
+
+kubectl get deployments
+
+kubectl get pods
+
+kubectl describe pods
+
+kubectl rollout undo deployments/kubernetes-bootcamp
+
+kubectl delete deployments/kubernetes-bootcamp services/kubernetes-bootcamp

6_update_app/kubectl_update.sh

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+#!/usr/bin/env bash
+
+kubectl get pods
+
+kubectl describe pods
+
+kubectl set image deployments/kubernetes-bootcamp kubernetes-bootcamp=jocatalin/kubernetes-bootcamp:v2
+
+kubectl describe services/kubernetes-bootcamp

6_update_app/kubectl_verify.sh

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+#!/usr/bin/env bash
+
+kubectl describe services/kubernetes-bootcamp
+
+export NODE_PORT="$(kubectl get services/kubernetes-bootcamp -o go-template='{{(index .spec.ports 0).nodePort}}')"
+echo "NODE_PORT=$NODE_PORT"
+
+curl http://"$(minikube ip):$NODE_PORT"
+
+kubectl rollout status deployments/kubernetes-bootcamp
+
+kubectl describe pods