Notes

# kubernetes

# contexts

kubectl config get-contexts
kubectl config use-context minikube
kubectl config set-content mycontext --nmespace=mystuff
kubectl config view

kubectl cluster-info
kubectl get componentstatuses

# resource info

kubectl get namespaces
kubectl get nodes
kubectl get ep
kubectl get pods -o wide    # output more info
kubectl get svc  
kubectl get deployments

kubectl get all # does not include all resources

kubectl api-resources   # get supported resources

# get all resources

kubectl api-resources --verbs=list --namespaced -o name | xargs -n 1 kubectl get --show-kind --ignore-not-found

# describe

kubectl describe svc webapi-svc
kubectl describe nodes node-1

# labels

kubectl get pods --show-labels

# search for matching labels
kubectl get pods -selector="ver=1,env=prod"     # negate this with -selector="ver!=1"

# search for labels logical OR
kubectl get pods -selector="ver in (1,2)"   # notin also valid

# create and update resources

kubectl create -f svc.yml
kubectl apply -f svc.yml  
kubectl apply -f deploy.yml --record
kubectl rollout status deployment APP

# watch deploy progress
kubectl get service webapi-svc --watch`

# deleting

kubectl delete -f deploy.yml

kubectl delete deployments --all

# kubectl - more

kubectl logs <pod> -f   # tail container logs
kubectl logs --previous <pod>   # get logs from previous instance of a pod
kubectl exec -it <pod> -- bash  # open a shell in container
kubectl cp <po>:/remote/path/to/file /local/path/to/file    # reverse to copy from pod to local

# launch a pod

kubectl run grafana --image=grafana/grafana --port=3000

# minikube

minikube start
minikube dashboard
minikube service webapi-chart --url

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