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13.4.5. Metrics Action Hooks
With the release of OpenShift Enterprise 2.1, you can now use metrics action hook to collect metrics at a gear level. Create a new file named
metrics in the App_Name/.openshift/action_hooks directory to use the metrics action hook.
You can provide an application with a metrics action hook if the Watchman metrics plug-in is enabled by the system administrator. The application metrics action hook is invoked at an interval configured for the Watchman plug-in. Ensure the action hook is an executable file and that the action hook writes to standard out (STDOUT).
Message Format
A metrics message must include the following fields and be written to standard out (STDOUT):
type=metric <metric name>=<metric value>
Example 13.3. Metrics Message Example
type=metric thread.count=5
