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Chapter 3
by Daniel Oh, James Freeman, Fabio Alessandro Locati
Practical Ansible 2
Title Page
Copyright and Credits
Practical Ansible 2
About Packt
Why subscribe?
Contributors
About the authors
About the reviewers
Packt is searching for authors like you
Preface
Who this book is for
What this book covers
To get the most out of this book
Download the example code files
Download the color images
Conventions used
Get in touch
Reviews
Section 1: Learning the Fundamentals of Ansible
Getting Started with Ansible
Technical requirements
Installing and configuring Ansible
Installing Ansible on Linux and FreeBSD
Installing Ansible on macOS
Configuring Windows hosts for Ansible
Understanding your Ansible installation
Understanding how Ansible connects to hosts
Verifying the Ansible installation
Managed node requirements
Running from source versus pre-built RPMs
Summary
Questions
Further reading
Understanding the Fundamentals of Ansible
Technical requirements
Getting familiar with the Ansible framework
Breaking down the Ansible components
Learning the YAML syntax
Organizing your automation code
Exploring the configuration file
Command-line arguments
Understanding ad hoc commands
Defining variables
Understanding Jinja2 filters
Summary
Questions
Further reading
Defining Your Inventory
Technical requirements
Creating an inventory file and adding hosts
Using host groups
Adding host and group variables to your inventory
Generating a dynamic inventory file 
Using multiple inventory sources in the inventory directories
Using static groups with dynamic groups
Special host management using patterns
Summary
Questions
Further reading
Playbooks and Roles
Technical requirements
Understanding the playbook framework
Comparing playbooks and ad hoc tasks
Defining plays and tasks
Understanding roles – the playbook organizer
Setting up role-based variables and dependencies
Ansible Galaxy
Using conditions in your code
Repeating tasks with loops
Grouping tasks using blocks
Configuring play execution via strategies
Using ansible-pull
Summary
Questions
Further reading
Section 2: Expanding the Capabilities of Ansible
Consuming and Creating Modules
Technical requirements
Executing multiple modules using the command line
Reviewing the module index
Accessing module documentation from the command line
Module return values
Developing custom modules
Avoiding common pitfalls
Testing and documenting your module
The module checklist
Contributing upstream – submitting a GitHub pull request
Summary
Questions
Further reading
Consuming and Creating Plugins
Technical requirements
Discovering the plugin types
Finding included plugins
Creating custom plugins
Learning to integrate custom plugins with Ansible source code
Sharing plugins with the community
Summary
Questions
Further reading
Coding Best Practices
Technical requirements
The preferred directory layout
The best approach to cloud inventories
Differentiating between different environment types
The proper approach to defining group and host variables
Using top-level playbooks
Leveraging version control tools 
Setting OS and distribution variances
Porting between Ansible versions 
Summary
Questions
Further reading
Advanced Ansible Topics
Technical requirements
Asynchronous versus synchronous actions
Control play execution for rolling updates
Configuring the maximum failure percentage
Setting task execution delegation
Using the run_once option
Running playbooks locally
Working with proxies and jump hosts
Configuring playbook prompts
Placing tags in the plays and tasks
Securing data with Ansible Vault
Summary
Questions
Further reading
Section 3: Using Ansible in an Enterprise
Network Automation with Ansible
Technical requirements
Why automate network management?
Learning how Ansible manages networking devices
Enabling network automation
Reviewing the available Ansible networking modules
Connecting to network devices
Environment variables for network devices
Conditional statements for networking devices
Summary
Questions
Further reading
Container and Cloud Management
Technical requirements
Designing and building containers with playbooks
Managing multiple container platforms
Deploying to Kubernetes with ansible-container
Managing Kubernetes objects with Ansible
Installing Ansible Kubernetes dependencies
Listing Kubernetes namespaces with Ansible
Creating a Kubernetes namespace with Ansible
Creating a Kubernetes Service with Ansible
Automating Docker with Ansible
Exploring container-focused modules
Automating against Amazon Web Services
Installation
Authentication
Creating your first machine
Complementing Google Cloud Platform with automation
Installation
Authentication
Creating your first machine
Seamless automation integration to Azure
Installation
Authentication
Creating your first machine
Expanding your environment with Rackspace Cloud
Installation
Authentication
Creating your first machine
Using Ansible to orchestrate OpenStack
Installation
Authentication
Creating your first machine
Summary
Questions
Further reading
Troubleshooting and Testing Strategies
Technical requirements
Digging into playbook execution problems
Using host facts to diagnose failures
Testing with a playbook
Using check mode
Solving host connection issues
Passing working variables via the CLI
Limiting the host's execution
Flushing the code cache
Checking for bad syntax
Summary
Questions
Further reading
Getting Started with Ansible Tower
Technical requirements
Installing AWX
Running your first playbook from AWX
Creating an AWX project
Creating an inventory
Creating a job template
Running a job
Controlling access to AWX
Creating a user
Creating a team
Creating an organization
Assigning permissions in AWX
Summary
Questions
Assessments
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Chapter 8
Chapter 9
Chapter 10
Chapter 11
Chapter 12
Other Books You May Enjoy
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