What are GitLab CI variables and how can I secure them?

What are GitLab CI variables and how can I secure them?

GitLab CI variables are key-value pairs that can be used to store configuration data for your CI/CD pipelines. To secure them, you should use masked variables for sensitive data, limit their scope, and avoid hardcoding them in your repository.

Can you explain what masked variables are?

Masked variables in GitLab CI are variables that are hidden in job logs. This means that if you use a sensitive value, like a password, it won't be displayed in the output, helping to keep it secure.

How do I set a variable as masked in GitLab?

To set a variable as masked, go to your project's settings, navigate to CI/CD, and then to Variables. When adding a new variable, check the 'Masked' option.

Are there any limitations on masked variables?

Yes, masked variables must be of a certain length and cannot contain characters that could be interpreted as commands. Additionally, they cannot be used in certain contexts, like in the script section of a job.