Yq

kubectl get configMap zabbix-server -oyaml | yq eval 'del(.metadata.resourceVersion, .metadata.uid, .metadata.annotations, .metadata.creationTimestamp, .metadata.selfLink, .metadata.managedFields)' -

https://github.com/mikefarah/yq

Dump all

mkdir -p tmp
cd tmp

for OBJ in $(kubectl api-resources --verbs=list --namespaced -o name)
do
   for DEF in $(kubectl get --show-kind --ignore-not-found $OBJ -o name)
   do
      mkdir -p $(dirname $DEF)
      echo $DEF

      kubectl get $DEF -o yaml \
      | yq eval 'del(.metadata.resourceVersion, .metadata.uid, .metadata.annotations, .metadata.creationTimestamp, .metadata.selfLink, .metadata.managedFields)' - > $DEF.yaml
done

Ref:

• https://stackoverflow.com/questions/61392206/kubectl-export-is-deprecated-any-alternative