Summarize the problem: Any way we can add an ENV to a pod or a new pod in kubernetes? For example, I want to add HTTP_PROXY to many pods and the new pods it will generate in kubeflow 1.4. So these pods can be access to internet.

Describe what you’ve tried: I searched and found istio maybe do that, but it's too complex for me. The second, there are too many yamls in kubeflow, as to I cannot modify them one by one to use configmap or add ENV just in them.

So anyone has a good simle way to do this? Like doing this in kubernetes configuation.

CodePudding user response：

Use "PodPreset" object to inject common environment variables and other params to all the matching pods.

Please follow below article https://v1-19.docs.kubernetes.io/docs/tasks/inject-data-application/podpreset/

CodePudding user response：

If PodPreset is indeed removed from v1.20, then you seem to need a webhook.

You will have to run an additional service in your cluster that will change the configuration of the pods.

Here is an example, on the basis of which I created my webhook, which changed the configuration of the pods in the cluster, in this example the developer used the logic adding a sidecar to the pod, but you can set your own to forward the required ENV:

https://github.com/morvencao/kube-mutating-webhook-tutorial/blob/master/medium-article.md