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https://issues.apache.org/jira/browse/AMQ-4247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13546747#comment-13546747
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Lionel Cons commented on AMQ-4247:
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Dejan,
Thanks for your reply and the link to some doc.
The error came in fact from an old installation on jmx4perl (agent). I've now
cleaned it. The /j4p/ path is because we use a proxy with this path, ActiveMQ
is queried with /api/jolokia/.
I can now access JMX information via Jolokia but I still have two problems.
(1) I tried to use ${activemq.conf} in web.xml to specify which access file
Jolokia should use but this syntax does not seem to be accepted. Is there a way
to put Java property names in web.xml? IMHO, it would make sense to configure
Jolokia from files under ${activemq.conf}.
(2) It seems the MBean paths have changed and this kills our Nagios monitoring.
For instance, to get the broker version, we have to use:
- for ActiveMQ 5.5: org.apache.activemq:Type=Broker,BrokerName=<name>
- for ActiveMQ 5.8: org.apache.activemq:type=Broker,brokerName=<name>
Is this case change intentional?
> Jolokia error in latest 5.8 snapshot
> ------------------------------------
>
> Key: AMQ-4247
> URL: https://issues.apache.org/jira/browse/AMQ-4247
> Project: ActiveMQ
> Issue Type: Bug
> Environment: activemq-5.8-20130105.031543-65
> Reporter: Lionel Cons
>
> Using the latest ActiveMQ 5.8 snapshot, I'm getting errors when trying to
> access /j4p:
> HTTP ERROR 503
> Problem accessing /j4p/. Reason:
> java.lang.IllegalStateException: Cannot load extractor
> org.jolokia.converter.json.simplifier.ClassSimplifier defined in
> jar:file:/usr/activemq/lib/web/jolokia-core-1.0.6.jar!/META-INF/simplifiers-default
> : java.lang.ClassCastException:
> org.jolokia.converter.json.simplifier.ClassSimplifier cannot be cast to
> org.jmx4perl.converter.json.Extractor. Aborting
> Is this a known problem? Is there any documentation on how to use and/or
> configure Jolokia with ActiveMQ?
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