12.2. Adding a Cartridge to an Application

When adding a cartridge to an application with the client tools, there are several options available that are used to specify the required information.

Table 12.1. Options When Adding Cartridges

Option Description
-a, --app [NAME] Name of an application.
-n, --namespace [NAME] Name of a domain.
-e, --env [VARIABLE=VALUE] Environment variable(s) to be set on this cartridge. It can also be a path to a file that contains the environment variables.
-g, --gear-size [SIZE] Gear size determines how much memory and CPU a cartridge consumes.
-c, --cartridge [CART_TYPE] Type of cartridge to add to an application.
Add a cartridge to an application with the following command, specifying the desired cartridge and the name of the application: 
$ rhc cartridge add Cart_Name -a App_Name
Specifying Cartridge Gear Size

When adding a cartridge to an application, specify the cartridge gear size with the -g, or --gear-size option along with the gear size. Note that this option is not available with non-scalable applications, because the web cartridge and any add-on cartridges are placed on the same gear. 

$ rhc cartridge add Cart_Name -a App_Name -g gear_size