Correct Way to Do Deployment Rolling Update

[Zhang Xiangjun]

When I use rc, I do rolling update with:

kubectl rolling-update rc/example --image=new_image

Now I use deployment, and I do rolling update with:

kubectl get deployment example -o yaml | sed 's/old_image/new_image' | kubectl apply -f -

But I got the error:

yaml: line 59: found unexpected end of stream

what's the correct way to do deployment rolling update non-interactively?

[Matthias Rampke]

Use `kubectl patch` to edit the deployment directly in Kubernetes. This avoids most consistency problems; get|sed|apply is very fragile.

In the long run, it is probably advisable to keep the source definition of the deployment in version control somewhere, change it there and keep applying that.

/MR

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[Xiangjun Zhang]

Thanks.

kubectl patch deployment example --type=json -p='[{"op":"replace", "path":"/spec/template/spec/containers/0/image", "value":"new_image"}]' works well.

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