This chapter provides an overview of Sun Java™ System Message QueueTM administrative tasks and the tools for performing them, focusing on common features of the command line administration utilities. It consists of the following sections:
The typical administrative tasks to be performed depend on the nature of the environment in which you are running Message Queue. The demands of a software development environment in which Message Queue applications are being developed and tested are different from those of a production environment in which such applications are deployed to accomplish useful work. The following sections summarize the typical administrative requirements of these two different types of environment.
In a development environment, the emphasis is on flexibility. The Message Queue message service is needed principally for testing applications under development. Administration is generally minimal, with programmers often administering their own systems. Such environments are typically distinguished by the following characteristics:
Simple startup of brokers for use in testing
Administered objects instantiated in client code rather than created administratively
File-system object store
File-based user repository
No master broker in multiple-broker clusters
In a production environment in which applications must be reliably deployed and run, administration is more important. Administrative tasks to be performed depend on the complexity of the messaging system and of the applications it must support. Such tasks can be classified into two general categories: setup operations and maintenance operations.
Administrative setup operations in a production environment typically include some or all of the following:
Setting the password for the default administrative user ( admin) (Changing the Default Administrator Password)
Managing the contents of a file-based user repository ( Populating and Managing a User Repository) or configuring the broker to use an existing LDAP user repository (Editing the Instance Configuration File)
Controlling the operations that individual users or groups are authorized to perform (User Authorization: The Access Control Properties File)
Setting up encryption services using the Secure Socket Layer (SSL) (Message Encryption)
Setting up and configuring an LDAP object store ( LDAP Server Object Stores)
Creating connection factories and destinations ( Adding Administered Objects)
Creating a cluster configuration file (Using a Cluster Configuration File)
Designating a master broker (Master Broker)
Configuring a broker to use a persistent store ( Configuring a Persistent Data Store).
Setting a destination’s configuration properties to optimize its memory usage (Updating Physical Destination Properties, Chapter 15, Physical Destination Property Reference)
Because application performance, reliability, and security are at a premium in production environments, message service resources must be tightly monitored and controlled through ongoing administrative maintenance operations, including the following:
Broker administration and tuning
Using broker metrics to tune and reconfigure a broker ( Chapter 11, Analyzing and Tuning a Message Service)
Managing broker memory resources (Routing Services)
Creating and managing broker clusters to balance message load (Chapter 9, Working With Broker Clusters)
Recovering failed brokers (Starting Brokers).
Adjusting connection factory attributes to ensure the correct behavior of client applications (Connection Factory Attributes)
Monitoring and managing physical destinations ( Chapter 6, Managing Physical Destinations)
Controlling user access to destinations ( Access Control for Physical Destinations)
Monitoring and managing durable subscriptions (see Managing Durable Subscriptions).
Monitoring and managing transactions (see Managing Transactions).
Message Queue administration tools fall into two categories:
Command line utilities
The graphical Administration Console
See Chapter 13, Command Line Reference for detailed information on the use of these utilities.
The Message Queue Administration Console combines some of the capabilities of the Command and Object Manager utilities. You can use it to perform the following tasks:
Connect to and control a broker remotely
Create and manage physical destinations
Create and manage administered objects in a JNDI object store
However, you cannot use the Administration Console to perform such tasks as starting up a broker, creating broker clusters, managing a JDBC database or a user repository, installing a broker as a Windows service, or generating SSL certificates. For these, you need the other command line utilities (Broker, Database Manager, User Manager, Service Administrator, and Key Tool), which cannot operate remotely and must be run on the same host as the broker they manage (see Figure 1–1).
See Chapter 2, Quick-Start Tutorial for a brief, hands-on introduction to the Administration Console. More detailed information on its use is available through its own help facility.