doc: Updated for hostname -s and resolving to non-loopback IP address.

fixes: #6234

Signed-off-by: John Wilkins <john.wilkins@inktank.com>

diff --git a/doc/start/quick-start-preflight.rst b/doc/start/quick-start-preflight.rst
index 63f6d66861cc3431baae9f2c76b6ed19c9db7231..328a7cd346c3ae275cce43bb4253727937d687cb 100644 (file)
--- a/doc/start/quick-start-preflight.rst
+++ b/doc/start/quick-start-preflight.rst
@@ -77,8 +77,11 @@ Perform the following steps:
           User ceph
 
 
-#. Ensure connectivity using ``ping`` with hostnames (i.e., not IP addresses). 
-   Address hostname resolution issues and firewall issues as necessary.
+#. Ensure connectivity using ``ping`` with short hostnames (``hostname -s``). 
+   Address hostname resolution issues and firewall issues as necessary. 
+   **Note:** Hostnames should resolve to a network IP address, not to the 
+   loopback IP address (e.g., hostnames should resolve to an IP address other 
+   than 127.0.0.1).
 
 
 Ceph Deploy Setup