rhq-users September 2010

rhq-users@lists.stg.fedorahosted.org

13 participants
10 discussions

MySQL Connections
by JAVIER MANSO PEÑA 18 Oct '10

18 Oct '10

Hi I'm having a problem with RHQ and MySQL plugin. As RHQ monitors MySQL, the number of connection in MySQL grow. It happens until MySQL max connections is reached. Then MySQL doesn't accept more connection. How can I avoid this growth of connections in MySQL? Best regards, Javier

4 8

what hibernate management capabilities do you want?
by John Mazzitelli 01 Oct '10

01 Oct '10

(for those not in the #rhq irc room, I'm repeating here) Steve Ebersole (lead for Hibernate) asked me for thoughts and ideas of what kinds of management capabilities we'd like to see in hibernate (hibernate v4 specifically). I told him I'd ask around, consolidate ideas and send him an email with the thoughts. Post your ideas here and I'll forward them along. Whatever he comes up with and implements, we can later add to the RHQ Hibernate plugin functionality to make use of the new Hibernate management capabilities. Today, hibernate can emit stats and RHQ can monitor those - as I've documented in my blog here: http://management-platform.blogspot.com/2008/11/monitoring-hibernate-with-j… Steve wants to expand hibernate's management capabilities. What kinds of runtime management capabilities would people like to see from RHQ? I'm thinking, at a minimum, Hibernate should have the ability to view and change hibernate configuration properties. I haven't used hibernate 4, so I'm not sure what additional features it has above hib 3. Hopefully, others here have some ideas - chime in if you do.

2 2

the whole platform appears as down while metrics are being successfully collected
by Alexey Kamenchuk 28 Sep '10

28 Sep '10

4 6

jon 2.4 and jboss soa-p
by John Holland 28 Sep '10

28 Sep '10

I have been trying to get JON 2.4 to see a SOA-P server. I have the agent on the server and it is talking to JON, but it doesn't show any sign of recognizing the SOA-P process. I installed what I believe to be the right plugin into JON to enable it to discover the SOA-P but there is no result. If anyone has experience with this and can advise me what to do next I'd really appreciate it. Thanks, John Holland Vizuri

5 10

Script plug-in metrics
by Al Amyot 24 Sep '10

24 Sep '10

The script plugin can apparently be used to capture metrics as well as just test availability. >From http://www.rhq-project.org/display/RHQ/Plugins+-+Script You can also use the same type of mechanism to define how to invoke the executable to obtain a certain set of metrics. You can define arguments and a regular expression and based on what the executable returns (and what the regex captures) would be the value of the metric data. Can someone explain how this is done? Al Amyot | Consultant Sierra Systems (eHealth): 204-926-4257 (T): 204-942-2575 (F): 204-942-2047 444 St. Mary Avenue, Suite 1050 Winnipeg, MB R3C 3T1 Management Consulting | System Integration | Managed Services website: www.SierraSystems.com <http://www.sierrasystems.com/> This email and/or any documents in this transmission is intended for the addressee(s) only and may contain legally privileged or confidential information. Any unauthorized use, disclosure, distribution, copying or dissemination is strictly prohibited. If you receive this transmission in error, please notify the sender immediately and return the original. Ce courriel et tout document dans cette transmission est destiné à la personne ou aux personnes à qui il est adressé. Il peut contenir des informations privilégiées ou confidentielles. Toute utilisation, divulgation, distribution, copie, ou diffusion non autorisée est strictement défendue. Si vous n'êtes pas le destinataire de ce message, veuillez en informer l'expéditeur immédiatement et lui remettre l'original.

2 3

jboss esb
by Cesar William 22 Sep '10

22 Sep '10

Hi, Is there a esb plugin for Jopr/RHQ? -- Att, Cesar William

2 3

projects using RHQ
by Ian Springer 17 Sep '10

17 Sep '10

Fyi, we have a new page on the RHQ wiki to keep track of projects/products that are using RHQ. If you are using RHQ to manage your project or product, reply to this thread and we'll add it to the page. Thanks. - Ian

1 1

Dampening and Availability
by Juliano Viana 10 Sep '10

10 Sep '10

Hi, My colleague Lucas Silva asked this question a few days ago but received no reply. So let me try to explain the problem in a different way. We are trying to use RHQ to monitor a number of HTTP servers. It works all right except for the fact the link between the host that runs the HTTP monitoring agent and the monitored servers is a bit unreliable. This unreliability causes the RHQ agent to report some HTTP services as down from time to time. Since the current metric collection interval is 5 mins when the agent reports a server to be down it will stay "down" for at least 5 mins. We found out that most false positive alerts related to availability appear as a 5-min downtime. So we would like to use alert dampening to only alert if a resource availability goes down for 10 mins or more. The problem is if we try to apply dampening to availability the alert is never fired. It seems like since the Availability condition tracks a change (Goes DOWN or Goes UP) the dampening rule never fires as the alert never "Goes DOWN" two times in a row. Ideally there should be a "is down" condition for alert metrics as well as the transition ones. Is there any reason why they aren't available? Looking at the source code it seems like we can make some changes in order to implement this. Is this the best course of action or are we missing something obvious in regards to availability? Regards, - Juliano

4 13

Monitoring log files
by Al Amyot 03 Sep '10

03 Sep '10

According to the documentation, the Events system can be used to monitor log files: "The Events System supports event data streamed in from an agent and attached to a resource. These events can be any type of useful information and include a timestamp, a severity, the message and an event source. The event source allows for a resource to have different types of event data streamed in and allows the UI to let the user filter. A common use of the events system is to track important log file messages. The Event System can be used to track log files for specific messages matching severity and/or expressions to get the most useful data. Included log tracking classes make it easy to support tailing log files and turning messages into RHQ events. Events could also be created from asynchronous messaging systems such as a JMX notification or a messaging provider such as JMS." How can this be used to monitor an applicaton's log file? E.g. montioring the tail of the log file watching for Error messages. Al Amyot | Consultant Sierra Systems (eHealth): 204-926-4257 (T): 204-942-2575 (F): 204-942-2047 444 St. Mary Avenue, Suite 1050 Winnipeg, MB R3C 3T1 Management Consulting | System Integration | Managed Services website: www.SierraSystems.com <http://www.sierrasystems.com/> This email and/or any documents in this transmission is intended for the addressee(s) only and may contain legally privileged or confidential information. Any unauthorized use, disclosure, distribution, copying or dissemination is strictly prohibited. If you receive this transmission in error, please notify the sender immediately and return the original. Ce courriel et tout document dans cette transmission est destiné à la personne ou aux personnes à qui il est adressé. Il peut contenir des informations privilégiées ou confidentielles. Toute utilisation, divulgation, distribution, copie, ou diffusion non autorisée est strictement défendue. Si vous n'êtes pas le destinataire de ce message, veuillez en informer l'expéditeur immédiatement et lui remettre l'original.

2 1

How to use dampening rule with availability
by Lucas Silva 02 Sep '10

02 Sep '10

Hello, I've got the following problem in monitoring a http, service my internet connection presents issues in certain little intervals of time, making the availabiltiy metric goes down, so the alert is sent, but in a little while the avilability goes up, making resource availability down in five minutes, because is the minimun time of scan availability. The question is how to avoid this issue? I've always have this problems little intervals of availability down. When I set dampening rule i can't get any alert, neither when is really down the resource. I can't set dampening rule correctly to availability. How can I use this? Checking the log file I can see the error generated by the connection issue, is the following " ERROR [ResourceContainer.invoker.daemon-1230] (org.rhq.plugins.netservices.HTTPNetServiceComponent)- java.net.ConnectException: Connection timed out" . Any tips? Thanks, Lucas.

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rhq-users September 2010