Network Management with JMX

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Network Management with JMX

• Thu Nguyen
• Oliver Argente
• CS158B

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JMX Overview

• JMX - Java Management Extensions
• Technology for managing and monitoring networks,
  systems, applications, and services
• Provides tools for building modular and dynamic
  managing and monitoring solutions
• Cross-platform Alternative to SNMP
• Uses Java classes called MBeans to expose mgmt
  interface of the managed devices
• JMX Manager

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JMX Overview

• Benefits of JMX
• Scalability
• Compatibility
• Implementation Cost
• Where is it used?
• web phones to set-top boxes to network devices
  and servers
• Who uses JMX?
• IBM, HP, AdventNet, Sun, Tomcat, Oracle
• J2EE vendors such as JBoss, Enhydra, Weblogic

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JMX Architecture (3 Layers)

• Manager Level
• Link between mgmt application and JMX agent
• Making integration possible
• Where JMX Manager resides
• Agent Level
• Contains JMX agents
• Has 2 components MBean Server Agent Services
• Instrumentation Level
• Defines manageable resources
• Has 3 components

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Architectural Components(Instrumentation Level)

• MBeans (Managed Beans)
• central blocks of the instrumentation level
• Makes resources manageable by defining
  characteristics and processes
• Employs dynamic class loading
• Notification Model
• Can be manipulated to send critical messages
• Similar to SNMP Trap
• MBean Metadata Classes
• Defines MBean components (i.e. attributes,
  operations, etc)
• Also contains names, description,
  characteristics, etc

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Architectural Components(MBeans)

• Standard MBean
• Java objects that conform to certain design
  pattern
• Simpler and quicker to implement
• Mgmt interfaces, operations, attributes are
  static
• Method names describe the mgmt interface.
• Best used for setting up new manageable resources
• Dynamic MBean
• Generic methods are used for setting/getting
  attributes
• Mgmt interfaces exposed at run time
• Quite complex to implement
• They can be used to access non-Java native
  resources

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Architectural Components(MBeans)

• Model MBean
• Fully configurable and self describe at run time
• Its an MBean template because it uses generic,
  configurable MBean classes
• Gives managers additional info about managed
  resources such as runtime behavioral data.
• Open MBean
• self defining and portable
• Can be managed by non-Java based mgmt
  application.

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Architectural Components(Agent Level)

• MBean Server
• Repository of MBeans
• Involved in the MBean registration
• Agent Services customizable objects
• Dynamic Class Loader can load new classes from
  any network location
• Monitors Observes changes
• Timers Scheduling mechanism
• Relation Services defines relationship between
  MBeans

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JMX Connectors and Protocol Adapters

• Remote Monitoring with JMX Connectors
• Create point to point communication
• Consists of 2 components
• Connector Server
• Connector Client
• Connector Heartbeats
• Protocol Adapters
• Provides view of an agent and its MBeans thru
  different protocols.
• Accessing Non-Java Programs
• Software components residing on the
  server/managed devices

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Hands-On Example of JMX

• Router Management
• Program Demonstration

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Network Management with JMX

• End of Presentation

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Resources Used

• Who uses jmx
• http//java.sun.com/products/JavaManagement/jmxad
  option.htmlhttp//www.javaworld.com/javaworld/jw-
  06-2001/jw-0608-jmx.html
• http//java.sun.com/products/JavaManagement/wp/jm
  x.jpg
• How jmx is used
• http//java.sun.com/developer/technicalArticles/J
  2SE/jmx.html