Kubectl

find_deployments_envs.md

Find deployments with environment variable "SOME_ENV"

for i in $(kubectl get ns -o json | jq -r '.items[].metadata.name' )
do 
  echo $i
  kubectl -n $i get deployments   -o jsonpath='{range .items[*]}[{.metadata.name},{range .spec.template.spec.containers[*]}[{.env[?(@.name=="SOME_ENV")].name}]{end}]{end}'
  echo
done

patch.md

Remove label from kubernetes deployment .spec.selector.matchLabels in all deployments

for ns in $(kubectl get namespaces -o jsonpath='{.items[*].metadata.name}')
do
 echo $ns; 
 for d in $(kubectl -n $ns get deployments -l 'chart in (php-nginx-0.1.0,php-supervisor-0.1.0)' -o jsonpath='{.items[*].metadata.name}')
 do 
   kubectl patch deployment "$d" -n $ns --type=json -p='[{"op": "remove", "path": "/spec/selector/matchLabels/chart"}]'
 done
 echo
done