kubernetes - K8 Pod生命周期:是否需要清理？

Question

Kubernetes Docs说以下内容:

In general, Pods do not disappear until someone destroys them. This might be a human or a controller. The only exception to this rule is that Pods with a phase of Succeeded or Failed for more than some duration (determined by the master) will expire and be automatically destroyed.

此持续时间的默认值是多少？如何设置？我的广告连播也从不会进入成功或失败阶段，而是分别进入已完成或错误阶段。这是可以预期的吗？文档过时了吗？

我使用 kubectl get pods --show-all检查pod阶段，有关它们的信息似乎仍然存在。是否需要进行其他清理？在不使用 kubectl get pods的情况下运行 --show-all不会显示任何已删除的pod。

我正在使用 kubectl apply -f k8/dummy-pod.yaml和以下yaml文件创建pod:

apiVersion: v1
kind: Pod
metadata:
  name: dummy.3
  labels:
    vara: a
    role: idk
spec:
  hostNetwork: true
  restartPolicy: Never
  containers:
  - image: gcr.io/gv-test-196801/dummy:v2
    name: dummy-1

Answer 1

我认为该文档已过时。
使用TTL was abandoned的容器垃圾回收，有利于终止的容器的阈值数量。 Kube Controller 管理器上的--terminated-pod-gc-threshold(docs here)。

当前删除DaemonSet, Deployment, ReplicaSet or StatefulSet会默认使其孤立。
您可以通过enabling cascading deletes解决此问题

此行为将在1.10中更改

Prior to apps/v1 the default garbage collection policy for Pods in a DaemonSet, Deployment, ReplicaSet, or StatefulSet, was to orphan the Pods. That is, if you deleted one of these kinds, the Pods that they owned would not be deleted automatically unless cascading deletion was explicitly specified

见 kubernetes blog