13.5.2. Informational Environment Variables

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Informational environment variables provide information about an application. These variables are always available to the application, regardless of which cartridges the application is using.

Table 13.3. Informational Environment Variables
Environment Variable Name	Purpose
`OPENSHIFT_APP_DNS`	The fully-qualified domain namespace of the application.
`OPENSHIFT_APP_NAME`	The name of the application.
`OPENSHIFT_APP_UUID`	The UUID of the application (32 hexadecimal characters).
`OPENSHIFT_Cart_Name_IP`	The IP address the application listens on.
`OPENSHIFT_Cart_Name_PORT`	The port the application receives requests from.
`OPENSHIFT_SECRET_TOKEN`	A 128-character string unique to an application that can be used for authentication, and can be overridden with the `rhc env set` command.

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