document adding crunch user

diff --git a/doc/install/install-crunch-dispatch.textile b/doc/install/install-crunch-dispatch.textile
index e95f807f8876488f3eef5e9b82b0ed6c7d8f4fd0..a4c95c1ce229f35ed05e935822e76c5fdcd77c06 100644 (file)
--- a/doc/install/install-crunch-dispatch.textile
+++ b/doc/install/install-crunch-dispatch.textile
@@ -28,8 +28,18 @@ On compute nodes:
 
 h4. Redis
 
+On controller:
+
 * @apt-get install redis-server@
 
+h4. Crunch user account
+
+On compute nodes and controller:
+
+* @adduser crunch@
+
+The crunch user should have the same UID, GID, and home directory on all compute nodes and on the controller.
+
 h4. Repositories
 
 Crunch scripts must be in git repositories in @/var/cache/git/*/.git@ (or whatever is configured in @services/api/config/environments/production.rb@).