add path for System SSH key on Ubuntu (#581)
Becouse the information was missing.
diff --git a/source/installguide/configuration.rst b/source/installguide/configuration.rst
index c6ad982..5af3fdd 100644
--- a/source/installguide/configuration.rst
+++ b/source/installguide/configuration.rst
@@ -507,6 +507,9 @@
- Copy the SSH public key from /var/cloudstack/management/.ssh/id_rsa.pub on the management server
- Add the copied key to /root/.ssh/authorized_keys file on the host
+ .. TIP::
+ On Ubuntu systems, the key will be in ``/var/lib/cloudstack/management/.ssh/id_rsa.pub`` instead.
+
Select "System SSH Key" and proceed with next steps.
- **Host Tags.** (Optional) Any labels that you use to categorize