Docs/Environment variables

Environment variables

Store API keys, database URLs, and feature flags as environment variables — then deploy so the running app picks them up.

Best for settings that belong to a single application.

Open your application.
Click Environment Variables.
Click Add, enter a key and value, and mark it as a secret when the value should stay hidden in the UI.
Save the variable.

Share common config across apps in the same project.

Important

Saving a variable does not update the live app by itself. Open Deployments and click Deploy so the running workload receives the new values.

If you also changed code in Git, run a successful Build first (or rely on auto-deploy), then deploy.

Related guides

Getting started — Create projects and apps, set environment variables, then build and deploy from the UI.
What is HostKB Cloud? — HostKB Cloud is a free hosting and deployment platform — deploy apps from Git with HTTPS and logs.
Free app hosting — Free hosting for Node.js, Python, .NET, Java, React, Angular, Next.js, Vue, PHP, and Docker apps.
Free deployment platform — Free deployment platform to deploy apps from Git — builds, HTTPS, domains, and auto-deploy.
Deploy from GitHub — Connect GitHub, pick a repository and branch, then build and deploy your app.
Sample apps (download) — Download Node.js, .NET, or Python sample ZIPs, push to your Git repo, and try a free deploy.
Custom domains & HTTPS — Attach your own domain, point DNS, and serve your app over automatic HTTPS.
Auto-deploy on push — Enable auto-deploy so pushes to your selected branch build and deploy automatically.
Build & deploy logs — Watch real-time build and deployment logs to troubleshoot releases on HostKB Cloud.
App sizes & scaling — Choose the right application size for CPU and memory, then upgrade as your workload grows.