Which messaging system does the vRealize Automation Event Broker System use?
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The vRealize Automation Event Broker System (EBS) is a key component of vRealize Automation, which provides the capability to publish and subscribe to events that are generated by vRealize Automation or by external systems. The EBS enables integration with external systems through event-driven automation workflows, which allow for flexible, efficient, and scalable automation of IT processes.
The EBS uses a messaging system to distribute events and notifications between components. The messaging system provides a way for components to communicate asynchronously, without the need for direct connections between them. This approach allows for high availability, scalability, and fault tolerance.
There are several messaging systems available that can be used with the EBS. The correct answer to this question depends on the version of vRealize Automation being used, as well as the specific configuration.
In older versions of vRealize Automation, the EBS used JBoss Messaging as the default messaging system. JBoss Messaging is an open-source messaging system that provides reliable, high-performance messaging capabilities. It is based on the Java Messaging Service (JMS) standard and provides support for a wide range of features, including message persistence, transaction support, and message filtering.
In more recent versions of vRealize Automation, the default messaging system used by the EBS is RabbitMQ. RabbitMQ is an open-source messaging system that is based on the Advanced Message Queuing Protocol (AMQP). It provides a robust and scalable messaging infrastructure that supports a wide range of messaging patterns, including publish-subscribe, point-to-point, and request-reply.
OpenJMS and ActiveMQ are other messaging systems that can be used with the EBS, although they are not commonly used in vRealize Automation environments.
In conclusion, the correct answer to this question depends on the specific configuration of vRealize Automation being used. In older versions, the default messaging system was JBoss Messaging, while in more recent versions, the default messaging system is RabbitMQ.