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Add docs for feature control

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1 parent 2ff6773 commit 2c1ebc67ddcd4c3eee6cb50dea2612bbd8718742 @xeger xeger committed Apr 10, 2012
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  1. +36 −0 INSTALL.rdoc
36 INSTALL.rdoc
@@ -89,6 +89,42 @@ and "rvm use" the appropriate Ruby before invoking any RightLink commands.
rvm use ruby-1.8.7-p352
+== Feature Control Customization
+Before installing RightLink (either as a package or from sources), you can
+selectively disable certain features that may not be compatible with your
+deployment environment.
+Feature control is accomplished by creating a special YAML file prior to
+installing the package or running any RightLink init script or program
+logic. The YAML file contains some boolean flags that affect the behavior
+of the init scripts and the agent at runtime.
+The following features can all be disabled:
+ * Managed login (aka Server Login Control)
+ * Frozen OS package repositories
+ * Automatic MOTD update on state transitions
+To disable one or more of these features, create the following file:
+ /etc/rightscale.d/right_link/features.yml
+And populate the file thusly, supplying true/false for each feature
+as appropriate.
+ motd:
+ update: false
+ package_repositories:
+ freeze: false
+ managed_login:
+ enable: false
+All features are assumed to be enabled by default unless this file exists
+and the associated feature is marked as disabled. Therefore, you can omit
+sections for features that should remain enabled.
== One-Time Setup

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