Kubernetes-等待其他Pod准备就绪 [英] Kubernetes - wait for other pod to be ready

问题描述

我有两个应用程序- app1 和 app2 ，其中 app1 是config server，其中包含 app2 的配置强>.我已经在 app1 中定义了/readiness端点，需要等待它返回OK状态才能启动 app2 的Pod.

I have two applications - app1 and app2, where app1 is a config server that holds configs for app2. I have defined /readiness endpoint in app1 and need to wait till it returns OK status to start up pods of app2.

至关重要的是，部署 app2 直到kubernetes从 app1 中的/readiness 端点接收到Http Status OK，因为它是配置服务器并拥有app2的关键配置.

It's crucial that deployment of app2 wait till kubernetes receives Http Status OK from /readiness endpoint in app1 as it's a configuration server and holds crucial configs for app2.

是否可以进行这种部署依赖?

Is it possible to do this kind of deployment dependency?

推荐答案

是的，可以使用博客文章(用于某些后台重新计时)，但更好的Kubernetes本机模式是使用重试和超时，而不是通过这种方式对依赖项进行硬编码.

Yes, it's possible using Init Containers (also, see this blog post for some background re timing) but a better, more Kubernetes-native pattern is to use retries and timeouts rather than hard-coding dependencies in this way.

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