Mayur Sharma:
Can we extract existing deployment yaml without the metadata junk?
kubectl get deployment -o yaml gives all the junk with actual meaningful data
Tej_Singh_Rana:
Hello, @Mayur Sharma
You can try with grep command. Like this way to extract fields kubectl get po nginx -oyaml | grep -v 'f:' > nginx.yaml
Fernando Jimenez:
@Mayur Sharma That metadata is part of the server-side apply. Natively, there is nothing to prevent from showing up unless you are in version 1.21. As an alternative you may use an external command filter like grep -v However, that leaves still quite a bit of residue behind. I have been experimenting with sed, instead, as the filter and it shows some promise.
kubectl -n kube-system get deploy coredns -o yaml | sed '/ managedFields:/,/ name:/{/ name:/b;d;}' > coredns.yaml
Mayur Sharma:
Thanks @Tej_Singh_Rana and @Fernando Jimenez, I will try it out.
Shwetha Shenoy V:
kubernetes 1.21 introduced a flag --show-managed-fields for this. By default, no managed fields are output in the yaml. To get them, you have to explicitly set the flag to true.