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Chapter 18. Monitoring
Infinispan Query provides access to statistics and operations related to indexing. The statistics provide information about classes being indexed and entities stored in the index. Lucene query and object loading times can also be determined by specifying the
generate_statistics property in the configuration.
18.1. About Java Management Extensions (JMX)
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Java Management Extension (JMX) is a Java based technology that provides tools to manage and monitor applications, devices, system objects, and service oriented networks. Each of these objects is managed, and monitored by
MBeans.
JMX is the de facto standard for middleware management and administration. As a result, JMX is used in Red Hat JBoss Data Grid to expose management and statistical information.
18.1.1. Using JMX with Red Hat JBoss Data Grid
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Management in Red Hat JBoss Data Grid instances aims to expose as much relevant statistical information as possible. This information allows administrators to view the state of each instance. While a single installation can comprise of tens or hundreds of such instances, it is essential to expose and present the statistical information for each of them in a clear and concise manner.
In JBoss Data Grid, JMX is used in conjunction with JBoss Operations Network (JON) to expose this information and present it in an orderly and relevant manner to the administrator.
18.1.2. Enable JMX for Cache Instances
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At the Cache level, JMX statistics can be enabled either declaratively or programmatically, as follows.
Enable JMX Programmatically at the Cache Level
Add the following code to programmatically enable JMX at the cache level:
Configuration configuration = new ConfigurationBuilder().jmxStatistics().enable().build();
Configuration configuration = new
ConfigurationBuilder().jmxStatistics().enable().build();18.1.3. Enable JMX for CacheManagers
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At the
CacheManager level, JMX statistics can be enabled either declaratively or programmatically, as follows.
Enable JMX Programmatically at the CacheManager Level
Add the following code to programmatically enable JMX at the CacheManager level:
GlobalConfiguration globalConfiguration = new GlobalConfigurationBuilder()..globalJmxStatistics().enable().build();
GlobalConfiguration globalConfiguration = new
GlobalConfigurationBuilder()..globalJmxStatistics().enable().build();18.1.4. Multiple JMX Domains
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Multiple JMX domains are used when multiple
CacheManager instances exist on a single virtual machine, or if the names of cache instances in different CacheManagers clash.
To resolve this issue, name each
CacheManager in manner that allows it to be easily identified and used by monitoring tools such as JMX and JBoss Operations Network.
Set a CacheManager Name Programmatically
Add the following code to set the CacheManager name programmatically:
GlobalConfiguration globalConfiguration = new
GlobalConfigurationBuilder().globalJmxStatistics().enable().
cacheManagerName("Hibernate2LC").build();
GlobalConfiguration globalConfiguration = new
GlobalConfigurationBuilder().globalJmxStatistics().enable().
cacheManagerName("Hibernate2LC").build();18.1.5. Registering MBeans in Non-Default MBean Servers
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The default location where all the MBeans used are registered is the standard JVM MBeanServer platform. Users can set up an alternative MBeanServer instance as well. Implement the MBeanServerLookup interface to ensure that the
getMBeanServer() method returns the desired (non default) MBeanServer.
To set up a non default location to register your MBeans, create the implementation and then configure Red Hat JBoss Data Grid with the fully qualified name of the class. An example is as follows:
To Add the Fully Qualified Domain Name Programmatically
Add the following code:
GlobalConfiguration globalConfiguration = new
GlobalConfigurationBuilder().globalJmxStatistics().enable().
mBeanServerLookup("com.acme.MyMBeanServerLookup").build();
GlobalConfiguration globalConfiguration = new
GlobalConfigurationBuilder().globalJmxStatistics().enable().
mBeanServerLookup("com.acme.MyMBeanServerLookup").build();
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