Ansible troubleshooting - Error no-free-form
How to Solve the Ansible Error no-free-form Shifting from Free-Form to Full Syntax
Ansible Rule “no-free-form”: Shifting from Free-Form to Full Syntax
In the world of automation, precision and clarity are paramount. Ansible, the powerful automation tool, brings forth an array of features to make automation tasks simpler and more efficient. However, it also lays down specific rules to ensure the correctness and maintainability of your Ansible playbooks. One such rule is “no-free-form,” which enforces the use of full syntax over free-form syntax in module calling.
What Is Free-Form Syntax?
Free-form syntax, also known as inline or shorthand syntax, is a way to specify module parameters by simply listing them. While this might seem convenient, it can lead to subtle bugs and hinder the functionality of code editors and integrated development environments (IDEs) in providing feedback, autocompletion, and validation.
Here’s an example of problematic code with free-form syntax:
--- - name: Example with discouraged free-form syntax hosts: all tasks: - name: Create a placeholder file ansible.builtin.command: chdir=/tmp touch foo # <-- Using free-form - name: Use raw to echo ansible.builtin.raw: executable=/bin/bash echo foo # <-- Using executable= changed_when: false
In this code, the use of free-form syntax in the
ansible.builtin.raw modules can create issues and hinder the editing experience.
WARNING Listing 4 violation(s) that are fatal no-changed-when: Commands should not change things if nothing needs doing. no-free-form.yml:5 Task/Handler: Create a placeholder file no-free-form: Avoid using free-form when calling module actions. (ansible.builtin.command) no-free-form.yml:5 Task/Handler: Create a placeholder file no-free-form[raw]: Avoid embedding `executable=` inside raw calls, use explicit args dictionary instead. no-free-form.yml:7 Task/Handler: Use raw to echo yaml[new-line-at-end-of-file]: No new line character at the end of file no-free-form.yml:9 Read documentation for instructions on how to ignore specific rule violations. Rule Violation Summary count tag profile rule associated tags 1 no-free-form basic syntax, risk 1 no-free-form[raw] basic syntax, risk 1 yaml[new-line-at-end-of-file] basic formatting, yaml 1 no-changed-when shared command-shell, idempotency Failed: 4 failure(s), 0 warning(s) on 1 files. Last profile that met the validation criteria was 'min'.
The Best Resources For Ansible
- CYBER DEALS at The Linux Foundation! Up to 65% off, and a FREE GIFT with EVERY PURCHASE! Limited Time, Don't Delay!
- Udemy: Learn Ansible Automation in 250+examples & practical lessons: Learn Ansible with some real-life examples of how to use the most common modules and Ansible Playbook
- Ansible by Examples: 200+ Automation Examples For Linux and Windows System Administrator and DevOps
- Ansible Cookbook: A Comprehensive Guide to Unleashing the Power of Ansible via Best Practices, Troubleshooting, and Linting Rules with Luca Berton
- Ansible For Windows By Examples: 50+ Automation Examples For Windows System Administrator And DevOps
- Ansible For Linux by Examples: 100+ Automation Examples For Linux System Administrator and DevOps
- Ansible Linux Filesystem By Examples: 40+ Automation Examples on Linux File and Directory Operation for Modern IT Infrastructure
- Ansible For Security by Examples: 100+ Automation Examples to Automate Security and Verify Compliance for IT Modern Infrastructure
- Ansible Tips and Tricks: 10+ Ansible Examples to Save Time and Automate More Tasks
- Ansible Linux Users & Groups By Examples: 20+ Automation Examples on Linux Users and Groups Operation for Modern IT Infrastructure
- Ansible For PostgreSQL by Examples: 10+ Examples To Automate Your PostgreSQL database
- Ansible For Amazon Web Services AWS By Examples: 10+ Examples To Automate Your AWS Modern Infrastructure
- Ansible Automation Platform By Example: A step-by-step guide for the most common user scenarios
Adhering to the Rule “no-free-form”
To adhere to “no-free-form,” it’s important to switch to the full syntax for module calling. Here’s the correct way to write the same code without using free-form syntax:
--- - name: Example that avoids free-form syntax hosts: all tasks: - name: Create a placeholder file ansible.builtin.command: cmd: touch foo # <-- Using full syntax chdir: /tmp - name: Use raw to echo ansible.builtin.raw: echo foo args: executable: /bin/bash # <-- Explicit and clear syntax changed_when: false
In this corrected code, we’ve used the full syntax for the
ansible.builtin.raw modules, making the code more readable and free from any free-form syntax issues.
The Importance of Full Syntax
The “no-free-form” rule promotes the use of full syntax over free-form syntax. Using full syntax ensures that your Ansible playbooks are clear, understandable, and free from subtle bugs. It also helps editors and IDEs provide better support for your Ansible code, enhancing your development experience.
The good news is that this rule can be automatically fixed using the
--fix option in
ansible-lint. This makes it easier to transition from free-form to full syntax, ensuring that your playbooks adhere to Ansible’s best practices.
In conclusion, while free-form syntax might seem convenient, it can lead to issues and hinder the development process. By adhering to Ansible’s Rule “no-free-form” and embracing full syntax, you’ll ensure that your playbooks are precise, clear, and maintainable, making your automation tasks a breeze.Subscribe to the YouTube channel, Medium, Website, Twitter, and Substack to not miss the next episode of the Ansible Pilot.
Learn the Ansible automation technology with some real-life examples in my
My book Ansible By Examples: 200+ Automation Examples For Linux and Windows System Administrator and DevOps
Want to keep this project going? Please donate