kubectl command

kubectl

common

version

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kubectl version
kubectl api-versions

health

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# check kubernetes inner ip 
kubectl get svc kubernetes -n default

# check api server
kubectl get componentstatuses

# check crd
kubectl get crd | grep cert-manager

# check all pods
kubectl get pods -A

label

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# check node label
kubectl get nodes --show-labels

namespace

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kubectl get namespaces

# delete all resource by specify namespace
kubectl delete all --all -n <namespace>

pod

basic

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# list namespace's pod
kubectl get pod -n {namespace}

# force delete pod
kubectl delete pod {pod_name} --grace-period=0 --force -n {namespace}

# describe
kubectl describe pod {podName}

log

​ • -c : Specify which container to retrieve logs from.

​ • -f: Stream the logs in real-time.

​ • –previous: Show logs from the last terminated container.

​ • –since=: Return logs for the last period (e.g., 1h, 30m).

​ • –tail=: Limit the number of log lines returned.

​ • –all-containers=true: Get logs from all containers in the pod.

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# pod
kubectl logs -f {podId} -n {namespace}

# pod's container
kubectl logs <pod-name> -c <container-name> -n <namespace>

config

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kubectl get pod <容器id> --kubeconfig=/path/to/configfile -o yaml > env-vq48.yaml
# kubectl get -o yaml 这样的参数，会将指定的 Pod API 对象以 YAML 的方式展示出来。
# expose
kubectl get pod <pod-name> -n <namespace> -o yaml > pod-config.yaml

exec

without kubeconfig

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# kubectl exec -it {pod_name} -- /bin/bash
kubectl exec -it {pod_id} -n {namespace} -c {container_id} -- sh

copy

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kubectl cp 命令空间/容器id:/path/to/source_file ./path/to/local_file

daemonsets

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kubectl get daemonsets --all-namespaces

storage

CSIDriver

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kubectl get csidrivers

storageclass

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kubectl get storageclass

# delete 
kubectl delete storageclass <sc-name>

pvc

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kubectl get pvc

pv

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# list pv
kubectl get pv

# delete pv
## step1: change stragety
kubectl patch pv PV_NAME -p '{"spec":{"persistentVolumeReclaimPolicy":"Delete"}}'
## step2: delete
kubectl delete pv PV_NAME

# delete multiply pv
kubectl get pv --no-headers | grep <NAME> | awk '{print $1}' | xargs kubectl delete pv