google: Update auth documentation with drift info

Mention that large time drift will cause authentication failures in the documentation for GCE. Closes #571 Signed-off-by: Tomaz Muraus <tomaz@apache.org>
apache · Sep 25, 2015 · 24adde4 · 24adde4
1 parent 3865e06
commit 24adde4
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/docs/compute/drivers/gce.rst b/docs/compute/drivers/gce.rst
@@ -41,7 +41,9 @@ Which one should I use?
   authorization is your Project ID.
 
 Once you have set up the authentication as described below, you pass the
-authentication information to the driver as described in `Examples`_
+authentication information to the driver as described in `Examples`_. Also
+bear in mind that large clock drift (difference in time) between authenticating
+host and google will cause authentication to fail.
 
 
 Service Account