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6.9. Communication Between OpenShift and Cartridges
A cartridge can provide services for use by multiple gears in one application. OpenShift Enterprise enables you to publish these services. Each message writes to
stdout or stderr with an exit status, one message per line.
Example 6.6. Service Messages
ENV_VAR_ADD: <variable name>=<value>
CART_DATA: <variable name>=<value>
CART_PROPERTIES: <key>=<value>
APP_INFO: <value>
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