data-migate ns fix

utils/data-migrate/README.md

@@ -1,11 +1,12 @@
+0. the namespace will be the namespace for your target application
 1. run the application you need
 2. wait for its PVs to be created
 3. suspend the application: `kubectl scale deployment/statefulset/... NAME -n NAMESPACE --replicas=0`
 4. wait for it to scale down so that the ReadWriteOnce PVs are released (or data-migrate will not be able to mount them)
 5. look up the destination PVC name you need: `kubectl get pvc NAME -n NAMESPACE`
-6. put the source host(node) and dir and destination PVC name to `install.yaml`
+6. put the namespace, source host(node) and dir and destination PVC name to `install.yaml`
-7. install the data-migrate: `kubectl create namespace data-migrate && kubectl delete pod data-migrate -n data-migrate --ignore-not-found=true && kubectl apply -f install.yaml`
+7. install the data-migrate: `kubectl delete pod data-migrate -n NAMESPACE --ignore-not-found=true && kubectl apply -f install.yaml`
-8. run the migration: `kubectl exec data-migrate -n data-migrate -- cp -a /old/. /new/` or anything you need instead of `cp`
+8. run the migration: `kubectl exec data-migrate -n NAMESPACE -- cp -a /old/. /new/` or anything you need instead of `cp` or interactive shell `kubectl exec -it data-migrate -n NAMESPACE -- sh` (or `bash` or `zsh`)
-9. validate you have everything migrated: `kubectl exec data-migrate -n data-migrate -- ls -laR /new`
+9. validate you have everything migrated: `kubectl exec data-migrate -n NAMESPACE -- ls -laR /new`
-10. uninstall the data-migrate: `kubectl delete pod data-migrate -n data-migrate`
+10. uninstall the data-migrate: `kubectl delete pod data-migrate -n NAMESPACE`
 11. resume the application back: `kubectl scale deployment/statefulset/... NAME -n NAMESPACE --replicas=1`

utils/data-migrate/install.yaml

@@ -2,7 +2,7 @@ apiVersion: v1
 kind: Pod
 metadata:
   name: data-migrate
-  namespace: data-migrate
+  namespace: <NAMESPACE_YOU_WANT_TO_MIGRATE_TO>
 spec:
   restartPolicy: Never
   containers: