Book Image

Mastering Ansible, 4th Edition - Fourth Edition

By : James Freeman, Jesse Keating
Book Image

Mastering Ansible, 4th Edition - Fourth Edition

By: James Freeman, Jesse Keating

Overview of this book

Ansible is a modern, YAML-based automation tool (built on top of Python, one of the world’s most popular programming languages) with a massive and ever-growing user base. Its popularity and Python underpinnings make it essential learning for all in the DevOps space. This fourth edition of Mastering Ansible provides complete coverage of Ansible automation, from the design and architecture of the tool and basic automation with playbooks to writing and debugging your own Python-based extensions. You'll learn how to build automation workflows with Ansible’s extensive built-in library of collections, modules, and plugins. You'll then look at extending the modules and plugins with Python-based code and even build your own collections — ultimately learning how to give back to the Ansible community. By the end of this Ansible book, you'll be confident in all aspects of Ansible automation, from the fundamentals of playbook design to getting under the hood and extending and adapting Ansible to solve new automation challenges.
Table of Contents (18 chapters)
Section 1: Ansible Overview and Fundamentals
Section 2: Writing and Troubleshooting Ansible Playbooks
Section 3: Orchestration with Ansible

Playbook logging and verbosity

Increasing the verbosity of Ansible output can solve many problems. From invalid module arguments to incorrect connection commands, increased verbosity can be critical in pinpointing the source of an error. Playbook logging and verbosity were briefly discussed in Chapter 3Protecting Your Secrets with Ansible, with regard to protecting secret values while executing playbooks. This section will cover verbosity and logging in further detail.


When executing playbooks with ansible-playbook, the output is displayed on standard output (stdout). With the default level of verbosity, very little information is displayed. As a play is executed, ansible-playbook will print a play header with the name of the play. Then, for each task, a task header is printed with the name of the task. As each host executes the task, the name of the host is displayed along with the task state, which...