Kubernetes academy

https://kubernetes.academy/lessons/introduction-to-kubectl awesome productivity tips from John Harris

source < (kubectl completion bash)

kubectx

kubens

kube-ps1 + kubeon

#doc on a k8s object
kubectl explain pod.spec.containers.ports

#grep json
kubectl get pod -n kube-system kube-scheduler-master -ojson | jq .metadata.labels

#show custom columns
kubectl get pod -n kube-system kube-scheduler-master -o custom-columns=NAME:.metadata.name,NS:.metadata.namespace


#show labels

kubectl get pod -n kube-system --show-labels

#show column with value of given label

kubectl get pod -n kube-system -L k8s-app

#filter by label value

kubectl get pod -n kube-system -l k8s-app=kube-dns -L k8s-app

#sort by

get pod -n kube-system -l k8s-app=kube-dns --sort-by='{.status.containerStatuses[*].restartCount}'

#trace execution (very verbose)

get pod -n kube-system -l k8s-app=kube-dns --sort-by='{.status.containerStatuses[*].restartCount}' -v10

https://kubernetes.academy/lessons/introduction-to-ingress