swarmlet.dev

What It Is

Swarmlet is a self-hosted, open-source Platform as a Service that runs on a single server or a Docker Swarm cluster. Inspired by Dokku, it aims to let developers deploy applications to their own VPS or multi-node cluster via git push, while staying compatible with Docker and Docker Compose. The project clearly positions itself as a thin wrapper on top of Docker commands, Docker Compose, and Docker Swarm mode.

Core Features

Functionally, Swarmlet reads the docker-compose.yml file in a project’s root directory, then uses it to build the application, push it to a local or custom registry, and deploy it to Swarm. It includes Traefik v2 and Let's Encrypt, enabling automatic HTTPS configuration and load balancing for frontend services. Certificates can be stored on a GlusterFS volume to support multi-node setups. Optional modules include Matomo, Portainer, Swarmpit, Swarmprom, and Grafana for analytics, monitoring, and cluster management. It also supports self-hosted GitLab CE and GitLab Runners, allowing users to build a private CI/CD environment.

Pricing and Deployment

The source text does not mention commercial pricing or paid editions, so it can only be confirmed as an open-source self-hosted project. Installation is fairly straightforward: run curl -fsSL https://get.swarmlet.dev | bash as root on the server. Non-interactive installation parameters are also supported. Note that the documentation explicitly says it has only been tested on Ubuntu 18.04 x64. Before deployment, you also need a domain name pointing to the server in order to access dashboards such as Traefik, Portainer, and Matomo.

Pros and Cons

Its strengths are that it fits closely with developers’ existing Docker Compose workflows, offers a simple deployment experience, and is lighter-weight than going straight to Kubernetes. It also provides a clear path from a single-node setup to multi-node scaling, while automatic SSL and Traefik integration reduce the cost of launching web applications. The downside is that the project’s maturity needs to be evaluated: the documentation marks the demo as outdated, and some examples are labeled FIX. System compatibility information is limited, and there is no visible SLA, commercial support, or hosted version. For production use, users still need to understand Docker Swarm, networking, persistence, and certificate management.

Who It’s For and Access from China

Swarmlet is suitable for individual developers, small teams, experimental high-availability environments, and users who want to run multiple websites, APIs, databases, and workers on their own VPS. It is less suitable for teams that need enterprise-grade support, a complex scheduling ecosystem, or standard Kubernetes capabilities. The source text does not provide information about access from China. Given its reliance on GitHub, Let's Encrypt, image sources, and installation scripts, real-world usage may be affected by the local network environment. Alternatives include Dokku, CapRover, k3s, Kubernetes, or using Docker Swarm directly.