Update manual_installation.md

manual_installation.md

@@ -230,6 +230,13 @@ ceph mon enable-msgr2
 ```
 The status at this point should be `OK`.
 ## Create the OSDs
+Note that if the new OSD are on different node you have to copy the configuration file the admin key from the first node
+```
+ls -l /etc/ceph/
+ceph.client.admin.keyring
+ceph.conf
+```
+
 # Bluestore
 Prepare and activate
 ```