会“帮助升级"重新启动PODS，即使它们不受升级影响? [英] WIll "helm upgrade" restart PODS even if they are not affected by upgrade?

问题描述

我的掌舵图有大约12个PODS.当我更改某些值后执行helm upgrade时，除一个外，所有POD都将重新启动.

My helm chart has some 12 PODS. When I did helm upgrade after changing some values all the PODs are restarted except for one.

我的问题是:

helm upgrade即使不受升级影响，也会重新启动PODS吗?

Will helm upgrade restart the PODS even if they are not affected by upgrade?

以其他方式放置:

helm upgrade仅在POD受升级影响时重新启动POD吗?

Is it helm upgrade restart PODs only if they are affected by upgrade?

推荐答案

就我而言，舵只重新启动受升级影响的吊舱

As far as I am concerned helm restart only the pods which are affected by upgrade

如果要重新启动所有Pod，可以使用--recreate-pods标志

If You want to restart ALL pods you can use --recreate-pods flag

-recreate-pods->如果适用，对资源执行Pod重新启动

--recreate-pods -> performs pods restart for the resource if applicable

例如，如果您有仪表盘图，则可以使用此命令重新启动每个吊舱.

For example if You have dashboard chart, You can use this command to restart every pod.

helm upgrade --recreate-pods -i k8s-dashboard stable/k8s-dashboard

存在一个 github问题，它为此提供了另一种解决方法

There is a github issue which provide another workaround for it

每次需要重新启动Pod时，请更改该注释的值.一个很好的注释可能是时间戳记

Every time you need to restart the pods, change the value of that annotation. A good annotation could be timestamp

首先，将注释添加到窗格中.如果您的图表属于Deployment类，则将注释添加到spec.template.metadata.annotations.例如:

First, add an annotation to the pod. If your chart is of kind Deployment, add annotation to spec.template.metadata.annotations. For example:

kind: Deployment
spec:
  template:
    metadata:
      labels:
        app: ecf-helm-satellite-qa
      annotations:
        timestamp: "{{ .Values.timestamp }}"

部署它.现在，每次在helm命令中设置时间戳记时. Kubernetes将在不停机的情况下推出新的更新.

Deploy that. Now, every time you set timestamp in helm command. Kubernetes will rollout a new update without downtime.

helm upgrade ecf-helm-satellite-qa . --set-string timestamp=a_random_value

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