Yq

Install

curl -LO https://github.com/mikefarah/yq/releases/download/v4.34.1/yq_linux_amd64.tar.gz
tar xf yq_linux_amd64.tar.gz
sudo cp yq_linux_amd64 /usr/local/bin/yq

kubectl

ip=$(kubectl get svc foo -o yaml | yq .spec.clusterIP)

https://mikefarah.gitbook.io/yq/usage/tips-and-tricks

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

env vars

https://mikefarah.gitbook.io/yq/operators/env-variable-operators

yq '(.. | select(tag == "!!str")) |= envsubst(nu, ff)' text.yqenv

Ref:

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