kubectl get namespace "stucked-namespace" -o json \
  | tr -d "\n" | sed "s/\"finalizers\": \[[^]]\+\]/\"finalizers\": []/" \
  | kubectl replace --raw /api/v1/namespaces/stucked-namespace/finalize -f -

docker logs etcd

kubectl logs etcd

docker exec etcd etcdctl

curl -XPUT -d '{"Level":"DEBUG"}' --cacert $(docker exec etcd printenv ETCDCTL_CACERT) --cert $(docker exec etcd printenv ETCDCTL_CERT) --key $(docker exec etcd printenv ETCDCTL_KEY) https://localhost:2379/config/local/log

curl -XPUT -d '{"Level":"INFO"}' --cacert $(docker exec etcd printenv ETCDCTL_CACERT) --cert $(docker exec etcd printenv ETCDCTL_CERT) --key $(docker exec etcd printenv ETCDCTL_KEY) https://localhost:2379/config/local/log

curl -X GET --cacert $(docker exec etcd printenv ETCDCTL_CACERT) --cert $(docker exec etcd printenv ETCDCTL_CERT) --key $(docker exec etcd printenv ETCDCTL_KEY) https://localhost:2379/config/local/log https://localhost:2379/metrics

kubectl -n kube-system get endpoints kube-controller-manager -o jsonpath='{.metadata.annotations.control-plane\.alpha\.kubernetes\.io/leader}'

curl -sLk --cacert /etc/kubernetes/pki/kube-ca.pem --cert /etc/kubernetes/pki/kube-service-account-token.pem --key /etc/kubernetes/pki/kube-service-account-token-key.pem https://127.0.0.1:1020/stats

kubectl get events --field-selector involvedObject.kind=Pod

kubectl get pods --all-namespaces -o go-template='{{range .items}}{{if eq .status.phase "Pending"}}{{.spec.nodeName}}{{""}}{{.metadata.name}}{{" "}}{{.metadata.namespace}}{{" "}}{{range .status.conditions}}{{.message}}{{";"}}{{end}}{{"\n"}}{{end}}{{end}}'

kubectl get nodes -o custom-columns=Name:.metadata.name,OS:.status.nodeInfo.osImage,KERNEL:.status.nodeInfo.kernelVersion,RUNTIME:.status.nodeInfo.containerRuntimeVersion,KUBELET:.status.nodeInfo.kubeletVersion,KUBEPROXY:.status.nodeInfo.kubeProxyVersion

kubectl get nodes -o go-template='{{range .items}}{{$node :=.}}{{range .status.conditions}}{{$node.metadata.name}}{{":"}}{{.type}}{{":"}}{{.status}}{{"\n"}}{{end}}{{end}}'

kubectl run -it --rm --restart=Never busybox --image=busybox:1.28 -- nslookup kubernetes.default kubectl run busybox --image=busybox:1.28 --restart=Never --rm -it -- nslookup www.google.com

kubectl -n ingress-nginx get pods -l app=ingress-nginx -o custom-columns=POD:.metadata.name,NODE:.spec.nodeName,IP:.status.podIP --no-headers | while read ingresspod nodename podip; do echo "=> Testing from ${ingresspod} on ${nodename} (${podip})"; curl -o /dev/null --connect-timeout 5 -s -w 'Connect: %{time_connect}\nStart Transfer: %{time_starttransfer}\nTotal: %{time_total}\nResponse code: %{http_code}\n' -k http://${podip}/healthz; done

for pod in $(kubectl -n ingress-nginx get pods -l app=ingress-nginx -o custom-columns=NAME:.metadata.name --no-headers); do kubectl -n ingress-nginx exec $pod -- cat /etc/nginx/nginx.conf; done

for pod in $(kubectl -n ingress-nginx get pods -l app=ingress-nginx -o custom-columns=NAME:.metadata.name --no-headers); do echo $pod; kubectl -n ingress-nginx exec $pod -- cat /etc/nginx/nginx.conf | md5; done

kubectl -n ingress-nginx logs -l app=ingress-nginx

kubectl -n ingress-nginx edit ds nginx-ingress-controller --v=2 up to --v=5