For New Relic to function, your application must be able to connect to the New Relic servers to report your performance data. Refer to your specific New Relic agent's instructions about compatibility and requirements, installation, and configuration.
Note: Installation procedures may vary for your agent. For example, Ruby agent installation procedures are different for the Ruby gem and the Rails plugin. It's always best to review the New Relic for (agent) document first to make sure your app or server meets the compatibility requirements, and then follow the link to the specific installation procedure you need.
For information about installing other New Relic products, refer to the "New Relic for..." document and installation procedures in each Documentation category:
If you need additional help, get support at support.newrelic.com.