Monitoring mod_cluster

[willemnoorduin]

A few questions:

• Are there any graphical tools which can be used to monitor mod_cluster connections and parameters (all answers except JBoss Operation Networking / RHQ are valid, I want to know if there are alternatives to this) ? And: the mod_cluster_manager Service is not graphic. Interesting paramerers are network-throughput, etc.
• Are there any cacti modules that we can use to monitor mod_cluster ?

[jfclere]

A part JBoss Operation Networking / RHQ not to my knowledge.

[rhusar]

I dont know about anything either, but contributions are welcome :-)

[yves.p]

Well mod_cluster uses Apache httpd so you could use those tools to monitor it. Here are two I have used:

Mod_status: http://httpd.apache.org/docs/2.0/mod/mod_status.html

AWStats: http://awstats.sourceforge.net/

There are plenty of other log analyzer tools out there for apache.

Also if you have a separate host for Apache you could use a system monitoring tool like nmon for monitoring throughput, CPU utilization and such.

[kbsivacse]

Thanks for the details!

Do we have similar utility like JKManager to control the traffic dynamically? For example, stop traffic going to specific node

[jfclere]

There isn't a JKManager but the mod_cluster-manager page allows to enter commands to stop a node, it is quite easy to write a client to sned the commands.