117 lines
2.7 KiB
Markdown
117 lines
2.7 KiB
Markdown
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> 本文作者：丁辉
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# Kubernetes强制删除资源
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## 卸载 Mount 挂载
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```bash
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umount $(mount | grep /var/lib/kubelet/pods | awk '{print $3}')
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```
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## 强制删除 Pod
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**指定你的 Pod 名称**
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```bash
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POD_NAME=
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```
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- 强制删除 Terminating Pod
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```bash
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kubectl delete pod ${POD_NAME} --force
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```
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- 立刻终止并强制删除 Terminating Pod
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```bash
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kubectl delete pod ${POD_NAME} --grace-period=0 --force
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```
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- 通过修改系统参数删除 Terminating Pod(仅Centos)
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> 通过设置 `fs.may_detach_mounts=1` , Linux内核可以允许卸载这些挂载点，即使它们仍然被一些进程占用。
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```bash
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sysctl -w fs.may_detach_mounts=1
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```
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- 通过修改 finalizers 删除 Terminating Pod
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> 当你删除一个资源（比如 Pod）时，Kubernetes 会将该资源的 finalizers 字段设置为一个非空的数组，这些 finalizers 是用来执行删除操作的一系列步骤。一旦这些步骤全部完成，Kubernetes 就会将资源完全删除。但是，有时候 Pod 可能会被卡在 Terminating 状态，无法正常删除，这可能是因为某些 finalizers 的执行未能成功完成，从而导致 Pod 无法被删除。
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```bash
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kubectl patch pod ${POD_NAME} -p '{"metadata":{"finalizers":null}}'
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```
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## 强制删除当前 Namespace 下所有 Pvc Pv
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- 设置变量
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```bash
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export YOURNAMESPACE=你的名称空间
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```
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- 删除 Pvc
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```bash
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for line in $(kubectl get pvc -n $YOURNAMESPACE | awk ' NR > 1{print $1}') ;do kubectl delete pvc $line -n $YOURNAMESPACE ; echo $line; done
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```
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- 删除 Pv
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```bash
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for line in $(kubectl get pv -n $YOURNAMESPACE | awk ' NR > 1{print $1}') ;do kubectl delete pv $line -n $YOURNAMESPACE ; echo $line; done
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```
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- 若发现 Pv 还是删除不了
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```bash
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for line in $(kubectl get pv -n $YOURNAMESPACE | awk ' NR > 1{print $1}') ;do kubectl patch pv $line -p '{"metadata":{"finalizers":null}}' -n $YOURNAMESPACE ; kubectl delete pv $line -n $YOURNAMESPACE ;echo $line; done
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```
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## 强制删除 Namespace
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**方法一**
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- 先手动强制删除试试
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```bash
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kubectl delete ns $YOURNAMESPACE --force --grace-period=0
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```
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**方法二**
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- 导出 JSON 文件
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```bash
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kubectl get namespace $YOURNAMESPACE -o json > ns.json
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```
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- 编辑 ns.josn 删除 finalizers 字段的值
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```yaml
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"spec": {
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"finalizers": []
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},
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```
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- 开启proxy
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```bash
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kubectl proxy --port=8081
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```
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- 删除
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```bash
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curl -k -H "Content-Type:application/json" -X PUT --data-binary @ns.json http://127.0.0.1:8081/api/v1/namespaces/$YOURNAMESPACE/finalize
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```
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## 删除Evicted pod
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```bash
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kubectl get pod -A | grep Evicted | awk '{print $2" -n "$1}' | xargs kubectl delete pod
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```
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