The temperature monitoring could be done very easily with a broadcast job. Unfortunately, broadcast jobs are not able to hand back a result to the client. Can you allow broadcast jobs to return a result?

You want to be able to monitor the node while tasks are executing in it. If a job is already executing on the node, then you can't run another job at the same time, whether it's a broadcast job or not. The current way of monitoring, using JMX, is what should be used.

In any case, that's not the main problem. The problem with thermal sensors is that there is no standard protocol to access them. It depends on the hardware you have, how the device drivers interact with it, and whether the OS can access the functionality. Furthermore, you'd need some way to access thermal readings from Java, which adds yet another layer of complexity. Plus, hardware specifications change all the time and there would be a huge maintenance cost. Due to all this, I have no intention to implement this specific type of monitoring.

However, what I can propose, and which I think would benefit the whole JPPF community, is an extension point to inject custom monitoring data (i.e. additional columns) in the "JVM health" view of the console. Note that you already have the possiblity to customize the admin console, along with the servers and nodes, to add custom monitoring:

• you can plug your own monitoring MBeans
• you can also add pluggable views in the console that may access these custom mbeans and display their data

beiri22 wrote:

The temperature monitoring could be done very easily with a
broadcast job. Unfortunately, broadcast jobs are not able to
hand back a result to the client. Can you allow broadcast jobs
to return a result?

Since node temperature is part of the information provided by Oshi, this feature will be delivered as part of Feature request JPPF-396 - Provide information on remote drivers/nodes not natively available from the JDK and Feature request JPPF-519 - Admin console: ability to add custom data to the JVM health view and the charts.

This feature request is now implemented as part of Feature request JPPF-396 - Provide information on remote drivers/nodes not natively available from the JDK and Feature request JPPF-519 - Admin console: ability to add custom data to the JVM health view and the charts