Monitoring the Petals SE ASE

In this version of the Petals ASE, the monitoring is based mainly on the ActiveMQ monitoring.

The following indicators are interesting:

number of requests processed with fault in the persistence area: a fast increase of this value should show:
- the target service provider or its backend are overloaded or down,
- a DoD of the ASE service provider client
number of retried requests: an increase of this value should show:
- the target service provider or its backend are overloaded or down,
- the ASE service provider client doesn't respect the SLA

Monitoring with basic tools

As ActiveMQ is provided with a JMX API, it is very easy to connect the JVisualVM to the ActiveMQ's JVM. See http://activemq.apache.org/jmx.html.

Don't forget to install into JVisualVM its plugin VisualVM-MBeans previously.

ActiveMQ is provided with a command-line tools to get statistics: activemq-admin

For example, use the following command to get the number of the requests waiting to be sent to the target service provider:

activemq-admin query --objname Type=Queue,Destination=testQueue --view QueueSize | grep QueueSize