Using Advanced kubectl Techniques

kubectl get pods -o jsonpath='{.items[*].metadata.name}'
kubectl get nodes -o jsonpath='{range .items[*]}{.metadata.name}{"\t"}{.status.capacity.cpu}{"\n"}{end}'

kubectl get pods -o custom-columns=\
NAME:.metadata.name,\
NODE:.spec.nodeName,\
STATUS:.status.phase,\
IP:.status.podIP

kubectl get pods --field-selector status.phase=Running
kubectl get events --field-selector type=Warning,involvedObject.kind=Pod

kubectl get pods -l 'app=web,tier=frontend'
kubectl get pods -l 'env in (prod,stage),!canary'

kubectl delete pods -l app=tmp
kubectl get pods -A -l app=web -o name | xargs -I{} kubectl restart {}
kubectl annotate pods --all owner=platform --overwrite

kubectl patch deploy web --type=merge -p '{"spec":{"replicas":5}}'
kubectl patch deploy web --type=json \
  -p '[{"op":"replace","path":"/spec/template/spec/containers/0/image","value":"nginx:1.27"}]'
kubectl patch deploy web --type=strategic -p '{"spec":{"template":{"spec":{"containers":[{"name":"web","image":"nginx:1.27"}]}}}}'

cat <<EOF | kubectl apply -f -
apiVersion: v1
kind: ConfigMap
metadata: { name: from-stdin }
data: { key: value }
EOF

kubectl diff -f manifest.yaml
KUBECTL_EXTERNAL_DIFF=meld kubectl diff -k overlays/prod

kubectl wait --for=condition=Ready pod/web --timeout=120s
kubectl wait --for=jsonpath='{.status.phase}'=Running pod/web
kubectl wait --for=delete pod/old --timeout=60s
kubectl rollout status deploy/web --timeout=5m

kubectl explain pod.spec.containers.resources
kubectl explain deploy --recursive
kubectl explain ingress.spec.rules --api-version=networking.k8s.io/v1