Update kubedb.md

operators/kubedb.md

@@ -7,5 +7,8 @@ kubectl get snapshots.kubedb.com -o go-template --template '{{range .items}}{{.m
 Clean snapshots older than 2 months in all namespaces:
 
 ```
-kubectl get snapshots.kubedb.com -o go-template --template '{{range .items}}{{.metadata.namespace}} {{.metadata.name}} {{.metadata.creationTimestamp}}{{"\n"}}{{end}}' -A  | awk '$3 <= "'$(date -d '2 month ago' -Ins --utc | sed 's/+0000/Z/')'" { print $1 " " $2}' | xargs --no-run-if-empty kubectl delete snapshots.kubedb.com -n
+for ns in `kubectl get snapshots.kubedb.com -o go-template --template '{{range .items}}{{.metadata.namespace}}{{"\n"}}{{end}}' -A | uniq`; do
+  kubens $ns
+  kubectl get snapshots.kubedb.com -o go-template --template '{{range .items}}{{.metadata.name}} {{.metadata.creationTimestamp}}{{"\n"}}{{end}}' | awk '$2 <= "'$(date -d '2 month ago' -Ins --utc | sed 's/+0000/Z/')'" { print $1 }'  | xargs --no-run-if-empty kubectl delete snapshots.kubedb.com;
+done
 ```
\ No newline at end of file