Migrate from Railway to osModa: Usage-Based to Flat-Rate

Railway is a well-designed PaaS with excellent developer experience, but its usage-based pricing model makes 24/7 AI agents expensive. A continuously running agent with 2 vCPUs and 4 GB RAM costs approximately $93/mo on Railway before egress fees. osModa offers the same resources on a dedicated NixOS server for $14.99/mo flat -- no metering, no egress charges, and purpose-built self-healing infrastructure.

Step-by-Step Migration from Railway

Migrating from Railway to osModa typically takes 30-60 minutes. The core process is straightforward because osModa gives you a full Linux server -- anything that ran on Railway can run on osModa without application code changes.

Step 1: Export Your Railway Project Configuration

Go to your Railway project dashboard and note all environment variables for each service. You can export them via the Railway CLI with railway variables or copy them from the Variables tab in the dashboard. If you have Railway-managed databases, record their connection strings. For PostgreSQL databases, create a dump with pg_dump using the Railway connection string.

Step 2: Spawn an osModa Server

Use the osModa dashboard or POST to /api/v1/spawn/{planId} to create a server. For a workload that was running on Railway with 2 vCPUs and 4 GB RAM, the Solo plan ($14.99/mo) provides equivalent resources. The server provisions in 5-10 minutes with IP address, SSH credentials, and WebSocket endpoint.

Step 3: SSH In and Deploy Your Application

SSH into your server with ssh root@your-server-ip. Clone your repository with git or upload your code via rsync. Install your runtime dependencies using NixOS packages -- no Dockerfile needed. Set your environment variables in your application's configuration or in a .env file. If your Railway project used a Dockerfile, you can either translate it to NixOS package declarations or continue using Docker on the osModa server (NixOS supports Docker).

Step 4: Set Up Your Database

If you were using Railway-managed databases, you have two options. You can install the database directly on your osModa server as a NixOS package (PostgreSQL, MySQL, Redis, etc. are all available) and import your data dump. Or you can continue using Railway's database temporarily while migrating, then move to a managed service like Supabase or Neon, or to the on-server database once everything else is stable.

Step 5: Verify and Switch Traffic

Test your application thoroughly on the osModa server. Verify all API endpoints, database connections, and background processes. Once confirmed, update DNS or client configurations to point to the osModa server IP. The osmoda-watch daemon is already monitoring your processes and will automatically restart them if they crash. After confirming production traffic is stable on osModa, you can shut down your Railway services to stop billing.

Before and After: Railway vs osModa

Key Differences: Railway vs osModa

Usage-Based vs Flat-Rate Pricing

Railway's per-second billing works well for variable-traffic web applications that scale to zero between requests. AI agents are the opposite -- they run continuously at steady resource consumption. This makes usage-based billing the most expensive possible model for always-on workloads. osModa's flat rate means your bill is the same whether your agent is idle or processing at maximum capacity. No CPU metering, no RAM metering, no egress fees.

Docker Containers vs NixOS

Railway builds and runs your application as Docker containers using Nixpacks or your own Dockerfile. This adds container overhead, introduces layer caching complexity, and limits you to what can run inside a container on shared infrastructure. osModa runs NixOS, which provides declarative system configuration without the container abstraction. Your applications run as native processes on dedicated hardware. You can still use Docker on osModa if you prefer, but most workloads run more efficiently without the container layer.

Shared Infrastructure vs Dedicated Server

Railway runs your containers on shared infrastructure where multiple customers share the same host machines. This introduces potential noisy-neighbor I/O issues, shared kernel vulnerabilities, and no control over the host OS. osModa provisions a dedicated server that you alone control. Full root SSH, complete OS-level configuration, and no resource contention from other tenants.

What You Gain

Moving from Railway to osModa gives you predictable flat-rate billing, a dedicated server with root access, self-healing with crash-loop detection and exponential backoff, SHA-256 tamper-proof audit logging, NixOS atomic rollbacks, and osmoda-mesh for encrypted multi-server networking. You also eliminate per-second billing, egress fees, and shared infrastructure constraints.

What Requires Manual Work

Railway's git-push deployment workflow is arguably best-in-class for PaaS. osModa does not replicate this out of the box. You need to set up your own deployment pipeline -- whether that is a GitHub Actions workflow, a git hook, or manual SSH-based deployment. Database management is also manual if you choose to run databases on the osModa server rather than using a managed service. For teams that valued Railway's zero-config deployment, there is additional setup work to achieve a similar workflow on osModa.

Explore More Migration Guides

• Migrate from Heroku -- dynos to dedicated NixOS servers
• Migrate from Fly.io -- Firecracker VMs to dedicated servers
• Migrate from Docker Compose -- containers to NixOS declarative config
• osModa vs Railway (full comparison) -- detailed feature-by-feature breakdown
• All migration guides -- complete list of platform migration guides

Frequently Asked Questions

Last updated: March 2026