Add new file

minikube tutorial/statements-list.txt

+# Get minikube:
+curl -Lo minikube https://storage.googleapis.com/minikube/releases/v0.30.0/minikube-linux-amd64 && chmod +x minikube && sudo mv minikube /usr/local/bin/ 
+
+# Get kubectl
+curl -LO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl && chmod +x ./kubectl && mv ./kubectl /usr/local/bin/kubectl
+
+#Config:
+echo "`hostname -i`  minikube" >> /etc/hosts
+# echo “[host eth0 IP]  [hostname] [hostname.novalocal]” >> /etc/hosts
+
+#Run:
+minikube config set vm-driver none
+minikube start
+
+#Verify:
+kubectl cluster-info
+kubectl get componentstatus
+kubectl get nodes
+kubectl get pods --all-namespaces
+kubectl get deployment --all-namespaces
+
+#Demo kubernetes
+minikube version
+minikube start
+kubectl version
+kubectl cluster-info
+kubectl get nodes
+
+#Using kubectl to Create a Deployment
+#Deploy our app
+kubectl run kubernetes-bootcamp --image=gcr.io/google-samples/kubernetes-bootcamp:v1 --port=8080
+kubectl get deployments
+
+#View our app
+#in a different terminal type:
+kubectl proxy
+curl http://localhost:8001/version  
+export POD_NAME=$(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/proxy/
+
+#Pods and Nodes
+#Check application configuration
+kubectl get pods
+kubectl describe pods
+#View the container logs 
+kubectl logs $POD_NAME
+#Executing command on the container
+kubectl exec $POD_NAME env
+kubectl exec -ti $POD_NAME bash
+cat server.js
+#You can check that the application is up by running a curl command:
+curl localhost:8080
+#Note: here we used localhost because we executed the command inside the NodeJS container
+#To close your container connection type exit
+
+#Using a Service to Expose Your App
+#Create a new service
+kubectl get pods
+kubectl get services
+kubectl expose deployment/kubernetes-bootcamp --type="NodePort" --port 8080
+kubectl get services
+kubectl describe services/kubernetes-bootcamp
+#Create an environment variable called NODE_PORT that has the value of the Node port assigned:
+export NODE_PORT=$(kubectl get services/kubernetes-bootcamp -o go-template='{{(index .spec.ports 0).nodePort}}'); echo NODE_PORT=$NODE_PORT
+curl $(minikube ip):$NODE_PORT
+#Using labels
+kubectl describe deployment
+kubectl get pods -l run=kubernetes-bootcamp
+kubectl get services -l run=kubernetes-bootcamp
+kubectl label pod $POD_NAME app=v1
+kubectl describe pods $POD_NAME
+kubectl get pods -l app=v1
+#Deleting a service
+kubectl delete service -l run=kubernetes-bootcamp
+kubectl get services
+curl $(minikube ip):$NODE_PORT
+kubectl exec -ti $POD_NAME curl localhost:8080
+
+
+#Running Multiple Instances of Your App
+#Scaling a deployment
+ kubectl get deployments
+kubectl scale deployments/kubernetes-bootcamp --replicas=4
+kubectl get deployments
+kubectl get pods -o wide
+kubectl describe deployments/kubernetes-bootcamp
+#Load Balancing
+#Ricreo il servizio che prima ho cancellato per esercizio: 
+kubectl expose deployment/kubernetes-bootcamp --type="NodePort" --port 8080
+kubectl describe services/kubernetes-bootcamp
+export NODE_PORT=$(kubectl get services/kubernetes-bootcamp -o go-template='{{(index .spec.ports 0).nodePort}}'); echo NODE_PORT=$NODE_PORT
+curl $(minikube ip):$NODE_PORT
+#Scale Down
+kubectl scale deployments/kubernetes-bootcamp --replicas=2
+kubectl get deployments
+kubectl get pods -o wide
+
+
+#Performing a Rolling Update
+#Update the version of the app
+kubectl get deployments
+kubectl get pods
+kubectl describe pods
+kubectl set image deployments/kubernetes-bootcamp kubernetes-bootcamp=jocatalin/kubernetes-bootcamp:v2
+kubectl get pods
+#Verify an update
+curl $(minikube ip):$NODE_PORT
+kubectl rollout status deployments/kubernetes-bootcamp
+kubectl describe pods
+#Rollback an update
+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 get pods
+kubectl describe pods
+
+
+