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Overview
This chapter gives a basic overview of the TIBCO Hawk monitoring system, its components.
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Components
The TIBCO Hawk monitoring system consists of the following main software components.
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Components
TIBCO Hawk Agent
TIBCO Hawk Microagent
TIBCO Hawk Display Program
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TIBCO Hawk Agent
A TIBCO Hawk agent is an autonomous process that resides on each computer and monitors systems and applications on that computer. Agents run independently of the TIBCO Hawk Display.
Agents operate autonomously and are active whenever the operating system they monitor is active. Agents use sets of rules, called rulebases, to configure system management, status, and automation tasks.
A TIBCO Hawk agent must be installed on each computer you wish to monitor.
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TIBCO Hawk Microagent
A TIBCO Hawk Microagent (HMA) is a partner process to the TIBCO Hawk agent and provides the local agent with methods for monitoring the host operating system.
Like the agent, a TIBCO Hawk Microagent is generally installed on each computer you wish to monitor.
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6. TIBCO Hawk Display Program
The TIBCO Hawk Display program is used by system administrators to view network health and to create rulebases (sets of rules that automate monitoring activities).
A TIBCO Hawk Display should be installed on any computers you wish to use for monitoring the network or for building rulebases.
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7. TIBCO Hawk System Architecture
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8. TIBCO Hawk System Architecture
The TIBCO Hawk system is made up of two main components: agents and Console Applications. Agents perform the bulk of the monitoring duties, and Console Applications act as user interfaces for status and configuration (TIBCO Hawk Display), historical event loggers (TIBCO Hawk Event Service), or bridges to other management systems.
The right side of the diagram shows TIBCO Hawk agents installed on machines to monitor local resources and conditions. Default microagents are used to monitor objects such as operating system performance, processes, log files, application metrics or the status of TIBCO Rendezvous sessions.
The left side of the diagram shows how user applications can be instrumented and monitored using TIBCO Hawk agents. In both scenarios, the TIBCO Hawk Application Management Interface (AMI) protocol acts as a gateway between the application’s management capabilities and the local TIBCO Hawk agents. An application can be directly instrumented with the AMI protocol to expose its management operations and data. If an application already employs a management interface other than AMI, an AMI adapter can be built to allow the agent to discover and exercise it.
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9. TIBCO Hawk System Architecture
The left side of the diagram shows how user applications can be instrumented and monitored using TIBCO Hawk agents. In both scenarios, the TIBCO Hawk Application Management Interface (AMI) protocol acts as a gateway between the application’s management capabilities and the local TIBCO Hawk agents. An application can be directly instrumented with the AMI protocol to expose its management operations and data. If an application already employs a management interface other than AMI, an AMI adapter can be built to allow the agent to discover and exercise it.
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Building a Rule
Most monitoring tasks consist of periodic checking for some problem condition. When the problem is detected, an alarm is sent or corrective actions are taken. If the application goes down, for example, capture some diagnostics and execute a startup script. If too much disk space is consumed, delete some temporary files. If duplicate processes are running, terminate the most recent one. When you create a rule, you specify this monitoring logic and package it for a TIBCO Hawk agent. The agent can apply the rule again and again without intervention. If a problem occurs, the agent can solve it by taking corrective action, or notify you that the problem requires attention, or both, depending on rule design.
Rules consist of data sources, tests, and actions. Data sources are microagent methods that periodically collect or asynchronously return information to an agent. One or more tests are applied to the resulting data set. When a particular test evaluates to true, one or more actions can be triggered.
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Flow of Rules and Tests
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AMI Protocol
The TIBCO Hawk Application Management Interface (AMI) is a protocol programmers can use to expose internal application methods to TIBCO Hawk. Such applications are said to be instrumented with an AMI interface. Applications instrumented with AMI are represented by microagents and can be used as a data source by TIBCO Hawk agents. AMI is also used to build adapters and gateways between external applications and the TIBCO Hawk system. AMI uses TIBCO Rendezvous messaging to communicate between an AMI application and TIBCO Hawk agents.
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