Ansible: Up and Running. Automating Configuration Management and Deployment the Easy Way. 2nd Edition Lorin Hochstein, Rene Moser

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Spis treści książki

• Foreword
• Preface to the Second Edition
  • A Note About Language
  • Acknowledgments
    • From Lorin
    • From René
• Preface to the First Edition
  • Why I Wrote This Book
  • Who Should Read This Book
  • Navigating This Book
  • Conventions Used in This Book
  • Online Resources
  • Safari Books Online
  • How to Contact Us
• 1. Introduction
  • A Note About Versions
  • Ansible: What Is It Good For?
  • How Ansible Works
  • Whats So Great About Ansible?
    • Easy-to-Read Syntax
    • Nothing to Install on the Remote Hosts
    • Push Based
    • Ansible Scales Down
    • Built-in Modules
    • Very Thin Layer of Abstraction
  • Is Ansible Too Simple?
  • What Do I Need to Know?
  • What Isnt Covered
  • Installing Ansible
  • Setting Up a Server for Testing
    • Using Vagrant to Set Up a Test Server
    • Telling Ansible About Your Test Server
    • Simplifying with the ansible.cfg File
  • Moving Forward
• 2. Playbooks: A Beginning
  • Some Preliminaries
  • A Very Simple Playbook
    • Specifying an Nginx Config File
    • Creating a Custom Home Page
    • Creating a Webservers Group
  • Running the Playbook
  • Playbooks Are YAML
    • Start of File
    • Comments
    • Strings
    • Booleans
    • Lists
    • Dictionaries
    • Line Folding
  • Anatomy of a Playbook
    • Plays
    • Tasks
    • Modules
    • Putting It All Together
  • Did Anything Change? Tracking Host State
  • Getting Fancier: TLS Support
    • Generating a TLS Certificate
    • Variables
    • Generating the Nginx Configuration Template
    • Handlers
      • A few things to keep in mind about handlers
    • Running the Playbook
• 3. Inventory: Describing Your Servers
  • The Inventory File
  • Preliminaries: Multiple Vagrant Machines
  • Behavioral Inventory Parameters
    • ansible_connection
    • ansible_shell_type
    • ansible_python_interpreter
    • ansible_*_interpreter
    • Changing Behavioral Parameter Defaults
  • Groups and Groups and Groups
    • Example: Deploying a Django App
    • Aliases and Ports
    • Groups of Groups
    • Numbered Hosts (Pets versus Cattle)
  • Hosts and Group Variables: Inside the Inventory
  • Host and Group Variables: In Their Own Files
  • Dynamic Inventory
    • The Interface for a Dynamic Inventory Script
      • Showing host details
      • Listing groups
    • Writing a Dynamic Inventory Script
    • Preexisting Inventory Scripts
  • Breaking the Inventory into Multiple Files
  • Adding Entries at Runtime with add_host and group_by
    • add_host
    • group_by
• 4. Variables and Facts
  • Defining Variables in Playbooks
  • Viewing the Values of Variables
  • Registering Variables
  • Facts
    • Viewing All Facts Associated with a Server
    • Viewing a Subset of Facts
    • Any Module Can Return Facts
    • Local Facts
  • Using set_fact to Define a New Variable
  • Built-in Variables
    • hostvars
    • inventory_hostname
    • Groups
  • Setting Variables on the Command Line
  • Precedence
• 5. Introducing Mezzanine: Our Test Application
  • Why Deploying to Production Is Complicated
    • PostgreSQL: The Database
    • Gunicorn: The Application Server
    • Nginx: The Web Server
    • Supervisor: The Process Manager
• 6. Deploying Mezzanine with Ansible
  • Listing Tasks in a Playbook
  • Organization of Deployed Files
  • Variables and Secret Variables
  • Using Iteration (with_items) to Install Multiple Packages
  • Adding the Become Clause to a Task
  • Updating the Apt Cache
  • Checking Out the Project by Using Git
  • Installing Mezzanine and Other Packages into a virtualenv
  • Complex Arguments in Tasks: A Brief Digression
  • Configuring the Database
  • Generating the local_settings.py File from a Template
  • Running django-manage Commands
  • Running Custom Python Scripts in the Context of the Application
    • Setting Service Configuration Files
  • Enabling the Nginx Configuration
  • Installing TLS Certificates
  • Installing Twitter Cron Job
  • The Full Playbook
  • Running the Playbook Against a Vagrant Machine
  • Troubleshooting
    • Cannot Check Out Git Repository
    • Cannot Reach 192.168.33.10.xip.io
    • Bad Request (400)
  • Deploying Mezzanine on Multiple Machines
• 7. Roles: Scaling Up Your Playbooks
  • Basic Structure of a Role
  • Example: Database and Mezzanine Roles
  • Using Roles in Your Playbooks
  • Pre-Tasks and Post-Tasks
  • A database Role for Deploying the Database
  • A mezzanine Role for Deploying Mezzanine
  • Creating Role Files and Directories with ansible-galaxy
  • Dependent Roles
  • Ansible Galaxy
    • Web Interface
    • Command-Line Interface
      • Installing a role
      • Listing installed roles
      • Uninstalling a role
    • Contributing Your Own Role
• 8. Complex Playbooks
  • Dealing with Badly Behaved Commands: changed_when and failed_when
  • Filters
    • The Default Filter
    • Filters for Registered Variables
    • Filters That Apply to File Paths
    • Writing Your Own Filter
  • Lookups
    • file
    • pipe
    • env
    • password
    • template
    • csvfile
    • dnstxt
    • redis_kv
    • etcd
    • Writing Your Own Lookup Plugin
  • More Complicated Loops
    • with_lines
    • with_fileglob
    • with_dict
    • Looping Constructs as Lookup Plugins
  • Loop Controls
    • Setting the Variable Name
    • Labeling the Output
  • Includes
    • Dynamic Includes
    • Role Includes
  • Blocks
  • Error Handling with Blocks
  • Encrypting Sensitive Data with Vault
• 9. Customizing Hosts, Runs, and Handlers
  • Patterns for Specifying Hosts
  • Limiting Which Hosts Run
  • Running a Task on the Control Machine
  • Running a Task on a Machine Other Than the Host
  • Running on One Host at a Time
  • Running on a Batch of Hosts at a Time
  • Running Only Once
  • Running Strategies
    • Linear
    • Free
  • Advanced Handlers
    • Handlers in Pre and Post Tasks
    • Flush Handlers
    • Handlers Listen
      • Handlers listen: The SSL case
  • Manually Gathering Facts
  • Retrieving the IP Address from the Host
• 10. Callback Plugins
  • Stdout Plugins
    • actionable
    • debug
    • dense
    • json
    • minimal
    • oneline
    • selective
    • skippy
  • Other Plugins
    • foreman
    • hipchat
    • jabber
    • junit
    • log_plays
    • logentries
    • logstash
    • mail
    • osx_say
    • profile_tasks
    • slack
    • timer
• 11. Making Ansible Go Even Faster
  • SSH Multiplexing and ControlPersist
    • Manually Enabling SSH Multiplexing
    • SSH Multiplexing Options in Ansible
  • Pipelining
    • Enabling Pipelining
    • Configuring Hosts for Pipelining
  • Fact Caching
    • JSON File Fact-Caching Backend
    • Redis Fact-Caching Backend
    • Memcached Fact-Caching Backend
  • Parallelism
  • Concurrent Tasks with Async
• 12. Custom Modules
  • Example: Checking That We Can Reach a Remote Server
  • Using the Script Module Instead of Writing Your Own
  • can_reach as a Module
  • Where to Put Custom Modules
  • How Ansible Invokes Modules
    • Generate a Standalone Python Script with the Arguments (Python Only)
    • Copy the Module to the Host
    • Create an Arguments File on the Host (Non-Python Only)
    • Invoke the Module
  • Expected Outputs
    • Output Variables that Ansible Expects
      • changed
      • failed
      • msg
  • Implementing Modules in Python
    • Parsing Arguments
    • Accessing Parameters
    • Importing the AnsibleModule Helper Class
    • Argument Options
      • required
      • default
      • choices
      • aliases
      • type
    • AnsibleModule Initializer Parameters
      • argument_spec
      • no_log
      • check_invalid_arguments
      • mutually_exclusive
      • required_one_of
      • add_file_common_args
      • bypass_checks
    • Returning Success or Failure
    • Invoking External Commands
    • Check Mode (Dry Run)
  • Documenting Your Module
  • Debugging Your Module
  • Implementing the Module in Bash
  • Specifying an Alternative Location for Bash
  • Example Modules
• 13. Vagrant
  • Convenient Vagrant Configuration Options
    • Port Forwarding and Private IP Addresses
    • Enabling Agent Forwarding
  • The Ansible Provisioner
  • When the Provisioner Runs
  • Inventory Generated by Vagrant
  • Provisioning in Parallel
  • Specifying Groups
  • Ansible Local Provisioner
• 14. Amazon EC2
  • Terminology
    • Instance
    • Amazon Machine Image
    • Tags
  • Specifying Credentials
    • Environment Variables
    • Configuration Files
  • Prerequisite: Boto Python Library
  • Dynamic Inventory
    • Inventory Caching
    • Other Configuration Options
    • Autogenerated Groups
  • Defining Dynamic Groups with Tags
    • Applying Tags to Existing Resources
    • Nicer Group Names
  • EC2 Virtual Private Cloud and EC2 Classic
  • Configuring ansible.cfg for Use with ec2
  • Launching New Instances
  • EC2 Key Pairs
    • Creating a New Key
    • Uploading an Existing Key
  • Security Groups
    • Permitted IP Addresses
    • Security Group Ports
  • Getting the Latest AMI
  • Adding a New Instance to a Group
  • Waiting for the Server to Come Up
  • Creating Instances the Idempotent Way
  • Putting It All Together
  • Specifying a Virtual Private Cloud
    • Dynamic Inventory and VPC
  • Building AMIs
    • With the ec2_ami Module
    • With Packer
      • Ansible Remote Provisioner
      • Ansible Local Provisioner
  • Other Modules
• 15. Docker
  • The Case for Pairing Docker with Ansible
  • Docker Application Life Cycle
  • Example Application: Ghost
  • Connecting to the Docker Daemon
  • Running a Container on Our Local Machine
  • Building an Image from a Dockerfile
  • Orchestrating Multiple Containers on Our Local Machine
  • Pushing Our Image to the Docker Registry
  • Querying Local Images
  • Deploying the Dockerized Application
    • Backend: Postgres
    • Frontend
    • Frontend: Ghost
    • Frontend: Nginx
    • Cleaning Out Containers
    • Connecting Directly to Containers
  • Ansible Container
    • The Conductor
    • Creating Docker Images
      • Creating the initial files
      • Creating the roles
      • Configuring container.yml
      • Building the containers
      • Troubleshooting builds
    • Running Locally
    • Publishing Images to Registries
      • Authenticating
      • Multiple registries
    • Deploying Containers to Production
• 16. Debugging Ansible Playbooks
  • Humane Error Messages
  • Debugging SSH Issues
  • The Debug Module
  • Playbook Debugger
  • The Assert Module
  • Checking Your Playbook Before Execution
    • Syntax Check
    • List Hosts
    • List Tasks
    • Check Mode
    • Diff (Show File Changes)
  • Limiting Which Tasks Run
    • Step
    • Start-at-Task
    • Tags
• 17. Managing Windows Hosts
  • Connection to Windows
  • PowerShell
  • Windows Modules
  • Our First Playbook
  • Updating Windows
  • Adding Local Users
  • Conclusion
• 18. Ansible for Network Devices
  • Status of Network Modules
  • List of Network Vendors Supported
  • Preparing Our Network Device
    • Enable SSH Authentication
  • How the Modules Work
  • Our First Playbook
  • Inventory and Variables for Network Modules
    • Local Connection
    • Host Connection
    • Authentication Variables
    • Save the Config
  • Use Configs from a File
  • Templates, Templates, Templates
  • Gathering Facts
  • Conclusion
• 19. Ansible Tower: Ansible for the Enterprise
  • Subscription Models
    • Try Ansible Tower
  • What Ansible Tower Solves
    • Access Control
    • Projects
    • Inventory Management
    • Run Jobs by Job Templates
  • RESTful API
  • Ansible Tower CLI
    • Installation
    • Create a User
    • Launch a Job
  • Onward
• A. SSH
  • Native SSH
  • SSH Agent
  • Starting Up ssh-agent
    • macOS
    • Linux
  • Agent Forwarding
    • Sudo and Agent Forwarding
  • Host Keys
• B. Using IAM Roles for EC2 Credentials
  • AWS Management Console
  • Command-Line
• Glossary
• Bibliography
• Index

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