Environment Variables
If you have not provided the required settings in the require statement, the agent
                uses the values of the following environment variables if those variables are set.
                If both are set, the require statement value takes precedence over
                the environment variable.
| Environment Variable | Maps to | 
|---|---|
| APPDYNAMICS_CONTROLLER_HOST_NAME | controllerHostName | 
| APPDYNAMICS_CONTROLLER_PORT | controllerPort | 
| APPDYNAMICS_CONTROLLER_SSL_ENABLED | controllerSslEnabled | 
| APPDYNAMICS_AGENT_ACCOUNT_NAME | accountName | 
| APPDYNAMICS_LOGGER_OUTPUT_TYPE | You can stream logs to stdoutby setting its value toconsole. | 
| 
                                     | You can set the logging level of the agent. Possible values include:  | 
| APPDYNAMICS_AGENT_ACCOUNT_ACCESS_KEY | accountAccessKey | 
| APPDYNAMICS_AGENT_APPLICATION_NAME | applicationName | 
| APPDYNAMICS_AGENT_TIER_NAME | tierName | 
| APPDYNAMICS_AGENT_NODE_NAME | nodeName | 
| APPDYNAMICS_AGENT_UNIQUE_HOST_ID | - | 
| APPDYNAMICS_ANALYTICS_HOST_NAME | host—in Analytics settings | 
| APPDYNAMICS_ANALYTICS_PORT | port—in Analytics settings | 
| APPDYNAMICS_ANALYTICS_SSL_ENABLED | ssl—in Analytics settings | 
| UNIQUE_HOST_ID | uniqueHostIdThe unique host ID can be set to any value that will identify the host. If a value is not specified, the agent will generate the host ID. Note: This environment variable is available by default (not for
                                        Java proxy mode). |