KubernetesComands.txt

#completion zsh
echo "if [ $commands[kubectl] ]; then source <(kubectl completion zsh); fi" >> ~/.zshrc

#apply manifest 
kubectl apply -f 

#create a manifest from a container deployment
kubectl create deploy nginx --image=nginx --dry-run=client -o yaml > nginx.yaml

#Run container with changed resources declared
kubectl run nginx --image=nginx --restart=Never --limits='cpu=300m,memory=512Mi' --dry-run=client o yaml > nginxNew.yaml

#expose the container creating a service
kubectl expose deployment nginx --type=ClusterIP --port=80

#run image container shell ex: alpine
kubectl run -it alpine --image=alpine -- sh

#validate 
kubectl create --dry-run=client --validate -f {filename}

#nodes
kubectl get nodes

#namespaces
kubectl get ns 

#get pods in all namespaces
kubectl  get pods -l run=nginx --all-namespaces
#get detailed information
kubectl get pods -o=wide 
kubectl get pods -o=yaml
kubectl get pods -o=json
kubectl get pods -o=name
kubectl get pods --sort-by=metadata.name
kubectl get pods --sort-by=metadata.creationTimestamp

#replica container information
kubectl get deploy

#Scale manually the container replicas
kubectl scale deploy/{name} --replica=5

#Service Account
kubectl get sa -A 

#Get manifest of a running pod to redeploy or modify
kubectl -n {podname} get pod {podID} -o yaml --export

#Important cluster state information (scheduler/controller manager/etcd)
kubectl get componentstatuses

#Rollback version of a container
kubectl rollout history {containername}
kubectl rollout undo {containername}
#Rollback to old version
kubectl rollout undo {containername} --to-revision=1


#Node resource utilization
kubectl top node 

#Comando para crear el secreto:
kubectl -n kube-system create secret generic digitalocean --from-literal=api-key=TU_API_KEY

#Bring API available resources for this cluster
kubectl api-resources 

#Service Account IAM Mapping 
kubectl describe sa {saname} -n 2048-game

#SA & Cluster
kubectl get clusterrole

#ClusterRole Admin
kubectl get clusterrole admin