Can JON be configured as a High-Availability (HA) cluster?

Solution Verified - Updated -

Environment

  • Red Hat JBoss Operations Network (ON)
    • 2.x
    • 3.0.0
    • 3.0.1
    • 3.1.0
    • 3.1.1
    • 3.1.2
    • 3.2.0
    • 3.2.1
    • 3.2.2
    • 3.3.x

Issue

  • How to cluster JBoss Operations Network (JON)
  • Is it possible to cluster JBoss Operations Network (JON) to achieve a higher availability?
  • Need to create High-Availability (HA) with multiple JON  instances
  • We need to set up another JBoss Operations Network (JON) instance to be clustered with the existing instance
  • Can JBoss Operations Network (JON) be clustered?
  • Does JBoss Operations Network (JON) support a High-Availability (HA) configuration?
  • How to install additional JBoss Operations Network (JON) servers into High-Availability (HA) system?
  • How do we add additional JBoss Operations Network (JON) servers to an existing JON system?

Resolution

As of JBoss Operations Network (JON) 3.1.2, a multi-server environment is supported. Using multiple JON servers provides a High-Availability (HA) environment that allows for fail-over and load distribution.  JON servers are added to a multi-server environment by performing a standard installation and specifying the same JON database that was used for the existing JON server or servers.  Each JON server within a multi-server environment also requires a unique name for identification.

For installation requirements and details, see High Availability and Agent Load Balancing For additional information on when you should use a HA configuration and how affinity groups can be defined for an HA environment, see Affinity Groups

Installing two or more JON servers in a JON system will provide a High-Availability (HA) configuration. The installation of the additional JON server is similar to the installation of a single JON server except that you will use the existing JON database and its data and will not need to install Agent plug-ins to the new server.

To add an additional JON server to an existing JON system:

  • Extract the JON server ZIP to the desired location
unzip jon-server-3.1.2.GA.zip
  • Start the JON server installation
cd jon-server-3.1.2.GA/bin

./rhq-server.sh start

  • From a web browser, go to the JON UI

  • click Click here to continue the installation

  • Enter the database connection properties for the existing JON database

  • Click the Test Connection button to confirm the settings are

  • Choose Keep (maintain existing data) for the warning prompt stating A database schema already exists. What do you want to do?

  • Set Registered Servers to New Server

  • Enter the rest of the configuration options as indicated in Configuring the Server with the Web Installer

  • Click the Install Server button when ready to perform the installation.

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