ConfigMap from env-file with patch op kubectl

Build a CM from KEY=VALUE file, then JSON-patch it into a container's envFrom

kubectl create configmap <name> --from-env-file=app.env -n <ns> --dry-run=client -o yaml | kubectl apply -f -; kubectl patch deploy/<name> -n <ns> --type=json -p='[{"op":"add","path":"/spec/template/spec/containers/0/envFrom/-","value":{"configMapRef":{"name":"<name>"}}}]'

#kubectl #secrets #gitops #k8s

more kubectl all 73 commands →

List all pods across namespaces kubectl get pods -A -o wide Describe a pod kubectl describe pod <name> -n <ns> Follow pod logs kubectl logs -f <pod> -n <ns> Logs from previous container kubectl logs <pod> --previous -n <ns> Exec into pod kubectl exec -it <pod> -n <ns> -- bash