How to Self-Host Dokku on a VPS (Complete Guide)

Self-hosting applications has become increasingly popular, especially among developers and homelab enthusiasts. Dokku is a great tool for managing applications using Docker containers, making it a valuable asset for anyone looking to deploy and manage apps effortlessly. In this guide, we’ll walk you through how to self-host Dokku on a VPS.

What is Dokku?

Dokku is an open-source PaaS (Platform as a Service) that allows you to easily manage your applications with Git. It leverages Docker containers to isolate your applications and their dependencies, allowing for easy scaling and management. By self-hosting Dokku, you gain control over your environment and save on costs associated with cloud services.

Requirements

Before we dive into the installation, ensure you have the following:

1. A VPS with at least Ubuntu 20.04.
2. Root access to your VPS.
3. A domain name (optional).
4. SSH access set up for easier management.

Choosing a VPS Provider

When choosing a VPS provider for self-hosting Dokku, consider pricing, performance, and features. Below is a comparison of some popular VPS providers offering competitive rates:

Full VPS comparison

Step-by-Step Installation of Dokku

1. Update Your VPS

Access your VPS through SSH and run the following commands to ensure your server is up to date:

sudo apt update && sudo apt upgrade -y

2. Install Required Dependencies

Dokku requires a few necessary packages. Install them with:

sudo apt install -y git curl

3. Install Docker

Dokku works on Docker, so you need to install Docker on your VPS:

curl -fsSL https://get.docker.com -o get-docker.sh
sh get-docker.sh

4. Install Dokku

Once Docker is set up, you can proceed to install Dokku. Run the following command:

wget https://raw.githubusercontent.com/dokku/dokku/v0.27.2/bootstrap.sh
sudo DOKKU_TAG=v0.27.2 bash bootstrap.sh

5. Configure Dokku

After installation, you’ll need to configure Dokku. Open your browser and navigate to http://your-vps-ip, where your-vps-ip is the IP address of your VPS. Follow the web interface for initial setup. Set up a domain and choose whether to use a database service.

6. Adding Apps to Dokku

To deploy applications, use the Git method. First, create a new app in Dokku:

dokku apps:create myapp

Push your code to the Dokku server:

git remote add dokku dokku@your-vps-ip:myapp
git push dokku master

7. Expose Your Application

To access your newly deployed application, map a domain:

dokku domains:add myapp example.com

FAQs

How does Dokku work with Docker?

Dokku packages applications into Docker containers, offering an isolated environment where applications can run. Each application deployed on Dokku can specify its dependencies through a Dockerfile, allowing for smooth scaling and resource allocation. This integration ensures that your application runs consistently on different environments, such as development, testing, and production.

What are the advantages of using Dokku over traditional hosting methods?

Using Dokku simplifies application management by allowing developers to deploy applications with Git push commands. It eliminates much of the overhead associated with server configuration and management, making it ideal for smaller teams or individual developers. Additionally, thanks to Docker, each app can have its dependencies handled separately, significantly reducing conflicts and improving reliability.

Can I use a different database instead of what Dokku provides?

Yes, Dokku allows you to configure and use various database plugins. You can either use Dokku’s built-in support for databases like PostgreSQL, MySQL, or Redis, or integrate external databases. This flexibility allows you to customize your environment based on your application requirements, using the database that best fits your needs.

Conclusion

Self-hosting Dokku on a VPS is an excellent way to take control of your applications and streamline your deployment process. By following these steps, you can set up and manage your applications efficiently. Whether you’re a developer or a homelabber, Dokku provides a powerful platform for leveraging Docker and enhancing your self-hosting experience. Grab your VPS from a provider like Contabo or Hetzner to get started today!