A JBoss Project
Red Hat

Read about it here or directly go to RHQ on GitHub

RHQ is an enterprise management solution for JBoss middleware projects, Tomcat, Apache Web Server, and numerous other server-side applications.

RHQ provides administration, monitoring, alerting, operational control and configuration in an enterprise setting with fine-grained security and an advanced extension model.

 

About the Project

Getting Involved If you wish to get involved as a contributor to RHQ, please visit #rhq channel on Freenode IRC and get to know people.
Developers Our developers are always looking for the community to get involved. Whether it is ideas for improvement, documentation, contributed plugins or core development. Check the Contributions page on the RHQ wiki
Community Our user mailing list and our developer mailing list are the main channels of communication between all community members. You can also join the team on IRC (#rhq on irc.freenode.net).
Knowledge User docs and developer resources can be found on the RHQ wiki.
Project Status RHQ uses the Red Hat Bugzilla issue tracker to organize and prioritize tasks. Development effort is done in RHQ Project which includes Jopr Project that is specific to JBoss technology management.
RHQ Project | Open Issues | Source code GIT repository
Professional Support Red Hat delivers the enterprise Support, Consulting, and Training that you need whether you are testing a proof of concept, deploying a mission-critical application, or rolling out JBoss Middleware products across your enterprise. The JBoss Operations Network a fully supported enterprise product for monitoring and managing JBoss middleware products that is based on RHQ.

RHQ

blogs about the RHQ project
Completed Remote Agent Install
Apr 15, 2014 10:10 AM by John Mazz
My previous blog post talked about work being done on implementing an enhancement request which asked for the ability to remotely install an RHQ Agent. That feature has been finished and checked into the master branch and will be in the next release.

I created a quick 11-minute demo showing the UI (which is slightly differently than what the prototype looked like) and demonstrates the install, start, stop, and uninstall capabilities of this new feature.

I can already think of at least two more enhancements that can be added to this in the future. One would be to support SSH keys rather than passwords (so you don't have to require passwords to make the remote SSH connection) and the other would be to allow the user to upload a custom rhq-agent-env.sh file so that file can be used to override the default agent environment (in other words, it would be used instead of the default rhq-agent-env.sh that comes with the agent distribution).
Running the RHQ-agent on a Raspberry PI [updated]
Feb 13, 2014 3:57 AM by Heiko Rupp

I finally got a Raspberry Pi too. After the hurdles of initial installation, got it hooked up to my LAN and of course I had to install an RHQ agent on it.

And it turned out that this was dead simple, as the Pi already has Java 1.7 installed (in the Raspbian Wheezy distro that I am using). Thus it was only a matter of laying down the rhq-agent, and starting it the usual way.

Now there was one caveat: the agent did not find any file systems or network interfaces etc. This is due to the fact that there is no native library for Sigar on arm v6 cpus supplied with the agent.

I cloned Sigar from its git repository, changed into the 1.6 branch and built that library myself.

Now after dropping libsigar-arm-linux.so into the agent's lib/ directory, the native library is available and on agent restart all the native stuff could be found.

Screenshot of platform details in RHQ
(Platform details in RHQ)

If you don't want to compile that library yourself, you can take my version from https://sourceforge.net/projects/rhq/files/rhq/misc/.

I will try to get that library into the upcoming RHQ 4.10 release, but can't promise anything.

Update

If you run the agent from current master (or upcoming RHQ 4.10), you can configure a list of plugins to be enabled, so that the agent only uses these plugins (and thus uses less memory and starts faster).
This property can be found in the file conf/agent-configuration.xml:


<entry key="rhq.agent.plugins.enabled" value="Platforms,JMX,RHQAgent"/>

The entries are a comma separated list of plugin (short) names. To determine those, you can run
plugins info at the agent command prompt:


> plugins info
Details of the plugins that are currently installed:

rhq-agent-plugin-4.10.0-SNAPSHOT.jar
Plugin Name: RHQAgent
Display Name: RHQ Agent
Last Updated: 14. Februar 2014 11:03:35 MEZ
File Size: 51.558 bytes
MD5 Hashcode: f7eb7577af667ee4883437230e4b2d8c
[...]

Summary of installed plugins:
[RHQAgent, Platforms, JMX]

The short names are the ones encoded as "Plugin Name" and which are also shown on the summary line. There has actually been a property to disable unwanted plugins for a longer time, but just enabling the ones needed is probably easier.


The other thing you should do it to remove the -Xms setting in the rhq-agent.sh script- the default of a 64MB minimum heap is just too large here.

With those 3 plugins above and the removed Xms setting, my agent has a committed heap of ~14MB and a used heap of ~11MB. A dump is/was 4MB in size.

P.S.: “Raspberry Pi" is a trademark of the Raspberry Pi Foundation

Back from OneDayTalk
Nov 2, 2013 6:12 AM by Heiko Rupp

[ I should have already written this a bit earlier, but I had some trouble with my left knee and had to go through some surgery (which went well). ]

As in the previous years I have been invited to give a talk at the OneDayConference in Munich. This year it was in a new location in a suburb of Munich called Germering. Getting there was easy for me, as there is a S-Bahn stop almost in front of the conference location.

The new location featured more and larger rooms and especially an area to sit down between talks or during lunch time. As in the last years the conference featured three parallel tracks.

As I said before I like that conference as everything is like a big family event with the organizers and also the presenters which featured many JBoss Colleagues; while I wrote that Ray would be there, Andrew Rubinger replaced him. The only talk that I really attended was the Wildfly one from Harald Pehl, which was full house. In the remaining part of the conference I talked to various attendees and colleagues from Jan Wildeboer to Gavin King and Heiko Braun. Heiko gave me an introduction about his (and Harald's) work to generate UIs from descriptors (which they use in the Wildfly console), which looks very interesting and where I think we could use some of that inside of RHQ to create "wizards" for several types of target resources.

In my talk, which was in the last slot, I had around 30 attendees (which was around 1/3 of the attendees still present). To my surprise I found out that the large majority did not yet know or use RHQ, so I had to switch from my original agenda and gave a brief introduction into RHQ first. Next I talked about the recent changes in RHQ and tried to gather feedback for future use case, but that was of course harder with attendees not knowing too much about RHQ. So much for "know your audience".

How do others try to find out their audience when the only thing they know is "This conference is all about JBoss projects" ?

You can find my slides in AsciiDoc format on GitHub that you can render via AsciiDoctor to html presentation.

Beware of the empty tag
Nov 1, 2013 2:20 PM by Heiko Rupp

I started playing with AngularJS lately and made some progress with RHQ as backend data source (via the REST api). Now I wanted to write a custom directive and use it like this:


<rhq-resource-picker/>
<div id="graph" style="padding: 10px"></div>

Now the very odd thing (for me) was that in the DOM this looked like this:


<rhq-resource-picker>
<div id="graph" style="padding: 10px"></div>
</rhq-resource-picker>

My custom directive wrapped around the <div> tag.

To fix this I had to turn my tag in a series of opening and closing tags instead of the empty one:


<rhq-resource-picker></rhq-resource-picker>
<div id="graph" style="padding: 10px"></div>

And in fact it turns out that a few more tags like the popular <div> tag show the same property of not allowing to write an empty tag, but requiring a tag pair.

OneDayTalk conference in Munich
Oct 10, 2013 7:13 AM by Heiko Rupp

I will as in the previous years be at this years JBoss OneDayTalk conference in Munich and talk about recent and future developments in RHQ.

OneDayTalk is a pretty nice little conference organized by the JBoss User Group Munich, that offers three tracks with 6 sessions each, where I usually have the problem that I can't divide myself into three to visit them all. And for 99 Euro you also get some good food and many opportunities to meet myself and other JBossians like Eric Schabell, Gavin King, Emanuel Muckenhuber, Heiko Braun or Ray Ploski. The conference web site has the full listing of speakers as well as the scheduled program.

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