blog/content/posts/2022-02-13-build-your-own-docker-swarm-cluster.md

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title	date	description	tags	slug	draft
Setup a Docker Swarm cluster for less than $30 / month	2022-02-13	Build an opinionated containerized platform for developer...	docker swarm	build-your-own-homelab-docker-swarm-cluster	true

{{< lead >}} Build your own cheap while powerful self-hosted complete CI/CD solution by following this opinionated guide 🎉 {{< /lead >}}

Why Docker Swarm 🧐 ?

Because Docker Swarm Rocks !

Even if Docker Swarm has lost the enterprise graduate orchestration containers war, you don't have to throw yourself into all Kubernetes fuzzy complicated things for a simple homelab, unless for custom training of course.

If you know how to use docker-compose, you're already ready for Docker Swarm which use almost the same API with addition of specific deploy config.

I'll try to show you step by step how to install your own cheap containerized cluster for less than $30 by using Hetzner, one of the best Cloud provider on European market, with cheap but powerful VPS.

So the prerequisites before continue :

• Have some knowledge on docker-compose setups
• Be comfortable with SSH terminal
• Registered for a Hetzner Cloud account
• A custom domain, I'll use example.org here

{{< alert >}} You can of course apply this guide on any other cloud provider, but I doubt that you can achieve lower price. {{< /alert >}}

Final goal 🎯

In the end of this multi-steps guide, you will have complete working development oriented cluster :

• Traefik, a cloud native reverse proxy

Cluster Architecture

Note as this cluster will be intended for developer user with complete self-hosted CI/CD solution. So for a good cluster architecture starting point, we should at least have the following nodes :

• manager-01 : The frontal manager node, with proper reverse proxy and some management tools
• worker-01 : A worker

cpx11 (AMD) = 2C/2G/40Go = 4.79 cx21 (Intel) = 3C/4G/80Go = 5.88 cpx21 (AMD) = 3C/4G/80Go = 8.28 cx31 (Intel) = 2C/8G/160Go = 10.68 cpx31 (AMD) = 4C/8G/160Go = 14.88

• Front CPX31
• Worker CPX21
• Runner CPX11
• Data CPX21 + 50Go Volume 2.40$
• Block storage 75Go FREE on Scaleway

Total : 2.40 + 28.28 + 14.79 + 1*10.68 = 34.43€