Hi, When I run this command: kubectl create configmap testing --from-file=... -o yaml --dry-run, I get the following output: kind: ConfigMap metadata: creationTimestamp: null name: testing Is there a way I can get rid of the line creationTimestamp: null without having to save the file and man…

You can use kubectl patch to remove this field, with a command similar to (not tested): kubectl create configmap testing --from-file=... -o yaml --dry-run | \ kubectl patch --type=json -p='[{"op": "remove", "path": "metadata.createTimestamp"}]'

kubectl create namespace your-name -o yaml --dry-run > ./namespace.yaml kubectl patch --local -f ./namespace.yaml --type=json -p='[{"op": "remove", "path": "/metadata/creationTimestamp"}]' -o yaml > ./namespace.yaml

Hi @queil , Following that, I got this error: error: no objects passed to patch Thanks, Visay

I don’t know if this is crude or elegant :thinking: but can’t you just grep it out? kubectl create configmap testing --from-file=... -o yaml --dry-run | grep -v creationTimestamp But I don’t see the advantage of removing it, null is a valid JSON value. There are other fields (in my output anyway)…

Hi @stephendotcarter , The reason I want to remove it is because I’m using Ansible module k8s and enable k8s validation parameter of that module would fail on null value of the creationTimestamp line. Should I raise this issue with Ansible instead? Thanks, Visay

How to remove creationTimestamp from dry-run output?

General Discussions

visay February 21, 2020, 3:14am 3

Hi @feloy,

Thanks for the response. I tested but that doesn’t work.

Do you have other suggestions?

Thanks,
Visay

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How to remove creationTimestamp from dry-run output?

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