In this lesson, you will learn:
- what yamllint is
- how to check your YAML files for issues using yamllint
- how to install yamllint
- yamllint's main configuration options.
What is YAML Lint?
As the name suggests, YAML lint allows us to check and validate our YAML files for issues, for example indentation issues.
Installing YAML Lint
To install YAML lint, simply perform a:
$ poetry add -D yamllint
yamllint can be run against a file or directory. If a directory is specified, yamllint will recursively check all of the files. Examples of each are shown below:
$ yamllint . $ yamllint dir $ yamllint myfile.yml
Therefore, let’s say we have the following file:
❯ cat 002_linting/004_yamllint_issues.yaml vlans: - vlan_id: 100 vlan_name: SALES vlan_id: 200 vlan_name: HR