kubectl

tmux setenv NAMESPACE <namespace>
tmux setenv POD1 <pod-1-name>
tmux setenv POD2 <pod-2-name>
tmux setenv POD3 <pod-3-name>
tmux setenv SEC1 <secret-name>

kubectl get namespaces

kubectl get nodes -n $NAMESPACE

kubectl get nodes -A

kubectl get pods -n $NAMESPACE
kubectl get pods -n $NAMESPACE -o wide
kubectl get pods -n $NAMESPACE -o wide --show-labels

kubectl describe pods $POD1 -n $NAMESPACE
kubectl describe pods $POD2 -n $NAMESPACE
kubectl describe pods $POD3 -n $NAMESPACE

kubectl get pods -n $NAMESPACE -o jsonpath='{range .items[*]}{"\nPod: "}{.metadata.name}{"  ==> Containers:  "}{range .spec.containers[*]}{.image}{" | "}{end}{end}' | sort

kubectl get pods -n $NAMESPACE -o jsonpath='{range .items[*]}{"\nPod: "}{.metadata.name}{"  ==> Containers:  "}{range .spec.containers[*]}{.name}{" | "}{end}{end}' | sort

kubectl exec --stdin --tty $POD1 -n $NAMESPACE -- /bin/sh
kubectl exec --stdin --tty $POD1 -c <container-name> -n $NAMESPACE -- /bin/sh

kubectl get services -n $NAMESPACE

kubectl get secret -n $NAMESPACE

kubectl get secret $SEC1 -n $NAMESPACE

kubectl describe secret $SEC1 -n $NAMESPACE

kubectl get secret $SEC1 -n $NAMESPACE -o jsonpath='{.data}'

kubectl get events -n $NAMESPACE

kubectl logs $POD1 -n $NAMESPACE
kubectl logs $POD1 -c <container-name> -n $NAMESPACE  

kubectl get all -n $NAMESPACE

kubectl cluster-info