Layer 3 · self-hosting reality check
What it actually takes to self-host Coolify
The docs say 2 GB. In practice you want 4 GB on the control node, plus whatever your apps need. Here is the honest version — real requirements, real monthly cost, what you will be maintaining, and the one thing that catches people out.
Usually reached from Heroku alternatives, where Coolify is one of the picks.
| RAM — documented minimum | 2 GB |
|---|---|
| RAM — what it really needs | 4 GB on the control node, plus whatever your apps need |
| CPU | 2 vCPU control node |
| Disk | Docker images accumulate fast — 40 GB minimum, more in practice |
| Monthly cost | $12–24/mo control node, against Heroku or Vercel pricing that scales per app |
| Setup time | 1 hour |
| How you install it | one install script on a fresh VPS; it then manages Docker for you |
| Ongoing maintenance | Moderate. You now own the host OS, Docker, TLS certificates and backups for everything it deploys. |
| Where it stops scaling | Dozens of applications across several servers. It is a control plane, not a Kubernetes replacement. |
The thing that catches people out
Coolify makes deploying easy and does not make operating easy. The moment it is running your production apps, you own kernel updates, disk pressure, certificate renewal and the recovery plan for the control node itself. Back up the Coolify configuration separately from the apps — rebuilding the orchestrator from memory is a bad afternoon.
When not to self-host Coolify
You are one person shipping one app and Vercel's free tier covers it. The saving does not justify the operational surface.
Every guide here carries this section. A site that only ever tells you to self-host is selling something — the useful answer is sometimes no.
Other Layer 3 self-hosting guides
Common questions
- How much RAM does Coolify actually need?
- 4 GB on the control node, plus whatever your apps need in practice. The documented minimum is 2 GB, which is the figure at which the process starts rather than the figure at which it works under real use. 2 vCPU control node alongside it.
- What does self-hosting Coolify cost per month?
- $12–24/mo control node, against Heroku or Vercel pricing that scales per app This is commodity VPS pricing and excludes your time, which is the larger cost for most people — budget for moderate. You now own the host OS, Docker, TLS certificates and backups for everything it deploys.
- How long does it take to set up Coolify?
- 1 hour, via one install script on a fresh VPS; it then manages Docker for you.
- When should I NOT self-host Coolify?
- You are one person shipping one app and Vercel's free tier covers it. The saving does not justify the operational surface.
- What is the most common mistake when self-hosting Coolify?
- Coolify makes deploying easy and does not make operating easy. The moment it is running your production apps, you own kernel updates, disk pressure, certificate renewal and the recovery plan for the control node itself. Back up the Coolify configuration separately from the apps — rebuilding the orchestrator from memory is a bad afternoon.