[Solr Wiki] Update of "SolrJMX" by ShalinMangar

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The following page has been changed by ShalinMangar:
http://wiki.apache.org/solr/SolrJMX

The comment on the change is:
Details on the upcoming JMX support

New page:
<!> ["Solr1.3"]

[[TableOfContents]]

= Introduction =
Solr can expose runtime statistics as Dynamic MBeans which can be leveraged to setup monitoring using JMX clients such as jconsole.

= Configuration =
JMX configuration is provided in solrconfig.xml

'''Note''' -- Enabling/disabling JMX and securing access to M!BeanServers is left upto the user by specifying appropriate JVM parameters and configuration. Please explore the [http://java.sun.com/javase/technologies/core/mntr-mgmt/javamanagement/ JMX Technology Home Page] for more details.

== Existing MBeanServer ==
{{{
<jmx />
}}}
Enables JMX support in Solr if and only if an existing M!BeanServer is found. Use this if you want to configure JMX through JVM parameters. Remove this to disable exposing Solr configuration and statistics to JMX. If this is specified then Solr will try to list all available M!BeanServers and use the first one to register MBeans.

== Existing MBeanServer with agentId ==
{{{
<jmx agentId="myMBeanServer" />
}}}
Enables JMX support in Solr if and only if an existing M!BeanServer is found matching the given agentId. If multiple servers are found then the first one is used. If none is found, an exception is raised and depending on the configuration, Solr may refuse to start.

== New MBeanServer ==
{{{
<jmx serviceurl="service:jmx:rmi:///jndi/rmi://localhost:9999/solrjmx" />
}}}
Creates a new M!BeanServer exposed for remote monitoring at the specific service url. If the JMX!ConnectorServer can't be started (probably because the serviceUrl is bad) then an exception is thrown.

= Where to find it =
Support for JMX is being built at [https://issues.apache.org/jira/browse/SOLR-256 SOLR-256 Stats via JMX]

Use the SOLR-256.patch attached in the above issue to try out the JMX support. Please help us by giving your feedback, comments and suggestions.