Helm 安装，Kubernetes - 如何等待 Pod 准备就绪? [英] Helm install, Kubernetes - how to wait for the pods to be ready?

问题描述

我正在创建 CI/CD 管道.

I am creating a CI/CD pipeline.

我运行 helm install --wait --timeout 300 ....但这并没有真正等待，只是在发布"状态为 DEPLOYED 时返回.

I run helm install --wait --timeout 300 .... But that doesn't really wait, just returns when the "release" status is DEPLOYED.

然后我在 kubectl get pods --namespace default -l 'release=${TAG}' -o yaml 中看到一些可以使用的东西:

So then I see a few things in kubectl get pods --namespace default -l 'release=${TAG}' -o yaml that could be used:

- kind: Pod
  status:
    conditions:
    - lastProbeTime: null
      lastTransitionTime: 2018-05-11T00:30:46Z
      status: "True"
      type: Initialized
    - lastProbeTime: null
      lastTransitionTime: 2018-05-11T00:30:48Z
      status: "True"
      type: Ready

所以我想我会看看什么时候 Ready 条件变为True".

So I guess I will look at when Ready condition becomes "True".

1. 感觉有点不对劲...每个人都解决了这个问题，所以我假设 kubectl 有一些特性，对吗?

这样查询合适吗?(请参阅 Kubernetes JSONPath 参考)

Is this the right thing to query? (See Kubernetes JSONPath reference)

kubectl get pods --namespace default -l 'release=sc8757070' -o jsonpath='{.items[*].status.conditions[?(@.type=="Ready")].status}'

kubectl get pods --namespace default -l 'release=sc8757070' -o jsonpath='{.items[*].status.conditions[?(@.type=="Ready")].status}'

推荐答案

你可以使用 kubectl rollout status

$ kubectl rollout status -h
Show the status of the rollout.

By default 'rollout status' will watch the status of the latest rollout until
it's done...

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