Railway Mastery · Step 2 of 6
Environment Variables & Secrets
Learn to configure Railway services with variables, reference variables, and per-environment setups — the right way, not the risky way.
What you’ll walk away with
- Configure deployed services using Railway variables instead of hardcoding sensitive values
- Use reference variables to share configuration across services without duplicating secrets
- Set up distinct, properly separated configuration for different environments (like staging vs. production)
- Identify and avoid common config mistakes that expose secrets or break environment isolation
- Complete a hands-on exercise configuring a real multi-environment service on Railway
Questions people ask before they start
Do I need prior Railway experience to take this course?
The course focuses specifically on configuration — variables, reference variables, and environment setup — so some basic familiarity with deploying a service on Railway will help you follow along, but the lessons walk through the concepts directly.
Will this teach me general secrets management or only Railway-specific config?
This course is scoped to Railway's configuration system: how to use variables, reference variables, and per-environment config properly. It's not a broad secrets-management theory course — it's grounded in the actual mechanics of configuring a deployed service on Railway.
Is there a hands-on component, or is it all lecture?
Yes — the module ends with a hands-on lesson where you configure a multi-environment service, applying variables, reference variables, and environment-specific config together.
What exactly are 'reference variables' and why do they matter?
Reference variables let you share configuration across services rather than duplicating values everywhere. The second lesson in the module covers this directly, showing how it reduces config drift and duplication.
Does this course cover managing different environments like staging and production?
Yes, one full lesson — Managing Config Across Environments — is dedicated to setting up per-environment configuration correctly, which then gets applied in the hands-on exercise.
Is this course part of a larger track, or standalone?
This course covers one module — Configuring Your Service Properly — with four lessons focused entirely on variables, reference variables, and environment config on Railway.