Rexster comes with a variety of options for monitoring given its integration with Metrics. Rexster continually gathers information about itself as it is accepting requests and sending back responses. This information is then periodically sent to the reporters configured in rexster.xml. Rexster supports the following reporters:

• Console
• JSON-based web service via HTTP
• JMX
• Ganglia
• Graphite

The metrics provided by Rexster can help inform administrators of Rexster’s health and include things like:

• Gremlin script engine processing times
• RESTful endpoint request/response times
• Underlying JMX attributes from Grizzly and Jersey

All configuration of metrics reporting is handled through rexster.xml. With in that file, there is a <metrics> element, which contains one or more <reporter> elements. These <reporter> elements represent places where Rexster will make gathered metrics available.

Rexster provides configuration options for several different reporters.

When the Console Reporter is configured, Rexster will periodically send its metrics to the console output.

<reporter>
  <type>console</type>
</reporter>