您能告诉kubernetes先启动一个Pod吗? [英] Can you tell kubernetes to start one pod before another?

问题描述

我可以添加一些配置，以便在可以安排其他Pod或将节点指定为就绪之前启动我的守护程序Pod吗?

Can I add some config so that my daemon pods start before other pods can be scheduled or nodes are designated as ready?

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这是总共2个不同的Pod，守护程序集是对可能在主机上调度的任何Pod的下游依赖项.

These are 2 different pods altogether, the daemonset is a downstream dependency to any pods that might get scheduled on the host.

推荐答案

没有 Pod层次结构在多种不同类型的Pod之间.含义属于不同的Deployment，Statefulsets，Daemonsets等.换句话说，没有主容器和子容器的概念.如果您想创建自定义层次结构，则可以构建自己的工具，例如，等待DaemonSet中所有Pod的状态开始或创建新的Pod或Kubernetes工作负载资源.

There's no such a thing as Pod hierarchy in Kubernetes between multiple separate types of pods. Meaning belonging to different Deployments, Statefulsets, Daemonsets, etc. In other words, there is no notion of a master pod and children pods. If you like to create your custom hierarchy you can build your own tooling around, for example waiting for the status of all pods in a DaemonSet to start or create a new Pod or Kubernetes workload resource.

在K8中，与Pod依赖关系最接近的是 StatefulSets .

The closest in terms of pod dependency in K8s is StatefulSets.

根据 docs :

对于具有N个副本的StatefulSet，在部署Pod时，将按{0..N-1}的顺序顺序创建它们.

For a StatefulSet with N replicas, when Pods are being deployed, they are created sequentially, in order from {0..N-1}.

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