12.1.10 Executing a single job on multiple agent hosts

(1) Operation

In a company, the system management department collects log data from all agent hosts in a cloud environment at a fixed time every day.

In version 11-00 or earlier, to carry out this task, a job must be defined for each agent host from which log data is to be collected.

Figure 12‒19: Example in which a job is defined for each agent host

Furthermore, if agent hosts are added or deleted by auto-scaling, jobs must also be added or deleted.

Figure 12‒20: Example in which jobs are added or deleted

In the above figure, Agent host C is added as a result of scaling out. Therefore, Job C must also be added.

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(2) Problem

• Execute a single job on multiple agent hosts.

• Add or delete agent hosts without having to manually add or delete jobs.

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(3) Solution

You can use broadcast execution of a flexible job to execute a single job on multiple agents simultaneously. This requires a broadcast agent.

Figure 12‒21: Example in which a broadcast agent distributes a job to multiple agent hosts

If agent hosts are added or deleted by auto-scaling, the broadcast agent receives heartbeats from destination agents, and automatically expands or shrinks the job distribution scope. Therefore, there is no need to add or delete jobs.

Figure 12‒22: Example in which a broadcast agent automatically expands the distribution scope

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(4) Configuration procedure

1. Set up the broadcast agent.

2. Set up the destination agents.

3. In JP1/AJS3, create a jobnet in which flexible jobs are defined.

4. Register the created jobnet (in which flexible jobs are defined) for execution.

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(5) Manual references

Type	item	Location
Overview	Flexible job	3.1.1(1)(a) Standard job in the manual JP1/Automatic Job Management System 3 Overview
	Example of defining a flexible job for broadcast execution	2.4.11 Executing a job on multiple execution agents simultaneously (example of defining a jobnet that uses flexible jobs) in the JP1/Automatic Job Management System 3 System Design (Work Tasks) Guide
	Notes on using flexible Jobs	7.8 Notes on using flexible jobs in the JP1/Automatic Job Management System 3 System Design (Work Tasks) Guide
	Example of a system configuration used for broadcast execution	2.10 Considerations for executing a job by broadcast execution in the JP1/Automatic Job Management System 3 System Design (Configuration) Guide
Configuration		21.3.2 Setup procedure to execute a job by broadcast execution in the JP1/Automatic Job Management System 3 Configuration Guide
Dialog boxes		12.4.12 Define Details - [Flexible Job] dialog box in the JP1/Automatic Job Management System 3 Operator's Guide

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