Deploy and Host Infisical on Railway

Infisical is an open-source, end-to-end encrypted secrets platform — a self-hosted alternative to Doppler, HashiCorp Vault, and AWS Secrets Manager. It solves secret sprawl: API keys, credentials, and certificates scattered across .env files, Slack, and CI configs, replaced by a single encrypted source of truth with a clean UI, a CLI, and SDKs. It also includes an internal Certificate Authority and native syncs to 50+ tools. This template deploys the full stack — Infisical, PostgreSQL, and Redis — with the master encryption key handled.

What This Template Deploys

All three run on Railway's private network, so no secrets travel over the public internet. Infisical is a standalone Node.js image; Postgres holds the encrypted data and Redis handles caching.

About Hosting

Infisical stores your most sensitive data, so one setting matters above all others — get it right and back it up.

ENCRYPTION_KEY is the master key to every secret — never lose it or change it. Infisical encrypts every stored secret with ENCRYPTION_KEY. If it's lost or regenerated on a redeploy, every secret in your vault becomes permanently undecryptable — you're locked out of your own API keys, credentials, and certificates, with no recovery. Generate it once in the correct format (openssl rand -hex 16), pin it, and back it up offline. AUTH_SECRET (openssl rand -base64 32) signs sessions and should likewise stay stable. This template sets both at deploy so a redeploy never orphans your secrets.

It's a three-service stack — Postgres and Redis are both required. PostgreSQL holds all encrypted data (this is what to back up), and Redis handles caching and sessions (no critical long-term data, but Infisical needs it running). Both are wired over the private network.

SITE_URL must be your Railway domain, and the DB variable is DB_CONNECTION_URI. Set SITE_URL to your public Railway URL or the dashboard and email links misbehave. Infisical uses DB_CONNECTION_URI (not DATABASE_URL) and REDIS_URL — this template wires them from Railway reference variables.

More than env vars: PKI and integrations. Infisical includes an internal Certificate Authority for X.509 certs, native syncs to GitHub Actions, Vercel, AWS, Kubernetes, Terraform, and 50+ more, RBAC with audit logs, and a Kubernetes operator — a full secrets-and-certs platform, not just a .env replacement. Pin a specific image tag rather than latest; Infisical moves fast and can ship breaking changes.

Typical cost: ~$10–15/month on Railway across the three services. Infisical is MIT-licensed and free to self-host.

How It Compares

HashiCorp Vault is powerful but notoriously complex to operate. Doppler and AWS Secrets Manager are managed but keep your secrets on their infrastructure and bill per user or per secret. Infisical's edge is a genuinely developer-friendly experience — clean UI, CLI, 50+ integrations, and built-in PKI — fully self-hosted with your secrets in your own database.

Deploy in Under 5 Minutes

1. Click Deploy on Railway — Infisical, PostgreSQL, and Redis build automatically (~4 minutes)
2. Confirm ENCRYPTION_KEY and AUTH_SECRET are set — and save the encryption key somewhere safe
3. Set SITE_URL to your Railway public domain
4. Confirm DB_CONNECTION_URI and REDIS_URL point at the Postgres and Redis services
5. Open your domain, create your organization and first project, and start adding secrets

Then use the Infisical CLI (infisical run -- npm start) or an SDK to inject secrets at runtime.

Common Use Cases

• End secret sprawl — one encrypted source of truth instead of API keys scattered across .env files and Slack
• CI/CD secret injection — feed secrets into GitHub Actions, GitLab CI, or Jenkins via the CLI without hardcoding
• Local development — run infisical run -- to pull env vars at runtime instead of emailing .env files
• Internal PKI — issue and manage X.509 certificates with the built-in Certificate Authority
• Machine identity management — RBAC and audit logs for both human and machine identities with full history

Configuration

> ENCRYPTION_KEY is the master key — back it up offline. It encrypts every secret. If it's lost or regenerated on redeploy, your entire vault becomes permanently undecryptable with no recovery. Generate it once, keep it stable, and store a copy somewhere safe outside Railway.

> Three services, and SITE_URL must match. Postgres (back this up) and Redis are both required. Set SITE_URL to your real Railway domain; note the DB variable is DB_CONNECTION_URI, not DATABASE_URL.

Dependencies for Infisical Hosting

• Railway account — ~$10–15/month across the three services
• PostgreSQL and Redis (both included)
• A secure, separate backup of ENCRYPTION_KEY
• Optional: SMTP credentials for email invitations and notifications

Deployment Dependencies

• Infisical GitHub Repository
• Infisical Self-Hosting Documentation
• Standalone Docker Deployment
• Railway Private Networking

Implementation Details

The template runs the standalone infisical/infisical image on port 8080 against a Railway PostgreSQL service and a Redis service, all on the private network so secrets never traverse the public internet. PostgreSQL stores every encrypted secret, project, identity, and audit record, while Redis provides caching and session storage without holding critical long-term data.

ENCRYPTION_KEY is the root of the encryption scheme — every secret is encrypted against it, so it is set once at deploy and must never change, or stored secrets become unrecoverable. AUTH_SECRET signs sessions. Connections use Infisical's own variable names, DB_CONNECTION_URI and REDIS_URL, supplied through Railway reference variables, and SITE_URL is set to the public domain for correct dashboard and email link generation.

Beyond secret storage, Infisical provides an internal Certificate Authority, 50+ native integrations, SDKs for Node.js, Python, Go, Ruby, Java, and .NET, and a Kubernetes operator, configured from the dashboard after first login. Pinning a specific image tag is recommended, since upstream releases can introduce breaking changes.

Frequently Asked Questions

What happens if I lose the ENCRYPTION_KEY? Every stored secret becomes permanently undecryptable — there is no recovery. It's the master key to your vault, so generate it once, keep it stable across redeploys, and back it up somewhere safe outside Railway. This template sets it at deploy for that reason.

Why does it need both Postgres and Redis? PostgreSQL stores all encrypted secrets and data (back this up), and Redis handles caching and sessions. Both are required, though Redis holds no critical long-term data.

How is this different from Vault? Infisical offers similar core capability with a far gentler learning curve — a clean UI, CLI, 50+ integrations, and built-in PKI — where HashiCorp Vault is powerful but complex to operate.

How do I inject secrets into my app? Use the Infisical CLI (infisical run -- ) or an SDK for your language to fetch secrets at runtime, so nothing is hardcoded or committed to version control.

Why is the DB variable called DB_CONNECTION_URI? That's Infisical's own variable name for the Postgres connection — not DATABASE_URL. This template wires it correctly from Railway's reference variables.

Should I pin the image version? Yes. Infisical ships frequently and can introduce breaking changes, so pin a specific tag rather than latest.

Why Deploy Infisical on Railway?

Railway is a singular platform to deploy your infrastructure stack. Railway will host your infrastructure so you don't have to deal with configuration, while allowing you to vertically and horizontally scale it.

By deploying Infisical on Railway you get a full secrets platform with the critical part handled — the master encryption key set so your vault stays decryptable, Postgres and Redis wired over private networking, and SITE_URL configured. End secret sprawl with an encrypted source of truth for API keys, credentials, and certificates, on infrastructure you own.