K8s常用命令

# 查看pod信息
kubectl describe pods <pod_name> -n <name_spaces>

# 查看所有端口信息
kubectl get svc -A

# 查看正在运行的pod中的文件内容
kubectl exec -it <pod_name> -n <name_spaces> /bin/cat /app/resources/application.yml

# 重启Pod
kubectl delete pods <pod_name> -n <name_spaces>

# 彻底删除Pod方法一
#  1. 删除pod
kubectl delete pods <pod_name> -n <name_spaces>
#  2.查询deployment
kubectl get deployment -n <name_spaces>
#  3. 删除deployment
kubectl delete deployment <deployment_name> -n <name_spaces>

# 彻底删除Pod方法二
kubectl delete -f xxx.yaml -n <name_spaces>

# 批量重启已经CrashLoopBackOff的Pod
kubectl get pod -A | grep <pod_name> | grep CrashLoopBackOff | awk '{print $1}' | xargs kubectl delete pod

# 设置Node污点
kubectl taint nodes <node_name> source=<name_spaces>:NoSchedule

# 修改Node污点
kubectl taint nodes --overwrite <node_name> source=<name_spaces>:NoSchedule

# 添加Node label
kubectl label nodes <node_name> pool=<name_spaces>
# 覆盖Node已有label
kubectl label nodes --overwrite <node_name> pool=<name_spaces>
# 删除Node label(减号)
kubectl label nodes <node_name> <label_name>-

# 查看指定node信息(包括label)
kubectl describe node <node_name>

# 查看label
kubectl get node --show-labels

# 查看端口映射
kubectl get svc -n kube-system

# 查看node节点ip
kubectl get nodes -o wide

# 查看pod信息
kubectl get pod -n <name_spaces> -o wide

# 进入指定容器
kubectl exec -it <pod_name> -n <name_spaces> bash

# 查看所有namespaces
kubectl get namespaces

# 查看master节点
kubectl get nodes -o wide | grep master

# 查看指定pod的日志
kubectl logs <pod_name>

# 类似tail -f的方式查看日志
kubectl logs -f <pod_name>

# 查看指定pod中指定容器的日志
kubectl logs <pod_name> -c <container_name>