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VMware vRealize Orchestrator Essentials

VMware vRealize Orchestrator Essentials

By : Daniel Langenhan
3.4 (5)
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VMware vRealize Orchestrator Essentials

VMware vRealize Orchestrator Essentials

3.4 (5)
By: Daniel Langenhan

Overview of this book

The automation of virtual environments has become the focus of many endeavors. VMware vRealize Orchestrator is a tool that enables you to automate not only your VMware environments, but also the surrounding hardware and software infrastructure. Orchestrator is also a central tool in the VMware cloud initiative and is extensively used by products such as vRealize Automation. In this book, you will learn how Orchestrator is able to help you automate your complete VMware infrastructure as well as its surrounding hardware and software. After deploying and configuring the vRealize Orchestrator appliance, you will learn how to run the existing workflows that are a part of the Orchestrator library. You will also see how the vSphere Web Client integration of Orchestrator reduces the time you spend on your daily admin tasks. The main aspect here is to learn how to create new workflows from existing ones. You will also look at how you can create completely new workflows. This includes learning about JavaScript and using presentation features to improve the layout and user friendliness of your workflows. Toward the end, you will learn to check for errors in your workflows and debug them. By the time you're done with the book, you'll be proficient in managing your workflows.
Table of Contents (11 chapters)
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10
Index

Creating an action


Actions are what programmers call functions. It is a piece of code that you intend to reuse often in different programs.

There are multiple differences between a workflow and an action. The main difference is that an action can return only one variable, whereas a workflow can return multiple variables. Another difference is that actions are purely JavaScript-based and do not contain any visual programming.

In an action, the in-parameters are defined the same way as in a workflow. However, the return type is a bit different. The return code is always one variable and its value is assigned by using the JavaScript return command. If you don't want or need any return code, define the return code as void.

A good naming convention for actions is to start the name of the action with a verb, such as get, set, create, delete, and so forth. Then, describe what the action is doing. A good way to make the name more readable is to capitalize each word (except the first word). Examples...

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