Add note about memory requirements

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>

diff --git a/teuthology/task/devstack.py b/teuthology/task/devstack.py
index 95a512a7cb67983d8b83087a33f1bb24e4cd169b..6d8575bf3f7ff458717fce06fa4dd00caabff272 100644 (file)
--- a/teuthology/task/devstack.py
+++ b/teuthology/task/devstack.py
@@ -25,6 +25,16 @@ def task(ctx, config):
     Glance and Cinder.
 
     Requires one node with a role 'devstack'
+
+    Since devstack runs rampant on the system it's used on, typically you will
+    want to reprovision that machine after using devstack on it.
+
+    Also, the default 2GB of RAM that is given to vps nodes is insufficient. I
+    recommend 4GB. Downburst can be instructed to give 4GB to a vps node by
+    adding this to the yaml:
+
+    downburst:
+        ram: 4G
     """
     if config is None:
         config = {}