SNMP is not really simple, but quite a useful protocol, if you want to run standard monitoring tools like Nagios, Zero RRD or Cacti.
Even though Java offers JMX for runtime information like thread and memory consumption, you can also use SNMP to read at least a subset.
In my opinion usage of a standard monitoring tool has several advantages over JMX-based visualization in jconsole or Lambda Probe:
- Statistics fit into centralized reporting, e.g. for SLAs.
- The tools are independent of the Java VM. If the VM freezes, the history is still available
We updated the Zero packages on SourceForge.net yesterday.
Even though it contains only minor changes and bugfixes, you may find the new parser and calendar gadget in the graph view useful.
The VMWare and VirtualBox appliances for the Zero Service are also up-to-date.
It’s done, yesterday we published a major update of the Zero RRD Framework at SourceForge. You will find the latest code in the SubVersion Repository, but also a snapshot in the Download Section.
You can just download and extract the
tar.gz archives for zerod and zero-agent in your
/opt folder and follow the manual in the
Any feedback and help is appreciated.
Hopefully soon SourceForge.net will show a new release of the Zero RRD Framework, that provides a simple but powerful service for real time graphs.
If you know the syntax of RRDTool you are already an export in configuring Zero. Uploading data is a simple HTTP request, but you can also use the Perl-based agent.