Setting Traefik Reverse Proxy Container Network for Tech Support Site
In this article, we will discuss how to set up Traefik as a reverse proxy for a tech support site hosted on a Docker host with multiple different web applications underneath a single HTTPS entry point. Let's dive into the key concepts of Traefik and reverse proxy configuration for your tech support site.
What is Traefik?
Traefik is an open-source reverse proxy and load balancer that makes deploying microservices easy. It seamlessly integrates with popular orchestrators such as Docker, Swarm, Kubernetes, Mesos, etc., and provides dynamic configuration and visualization of your application traffic.
Why use Traefik for Reverse Proxy?
There are several reasons to choose Traefik as your reverse proxy for your tech support site:
- Simplicity: Traefik automatically generates and reloads the necessary configuration when sensing changes within the dynamic infrastructure.
- Observability: Traefik provides a web UI and forwarding information to monitoring systems like Prometheus and Datadog.
- Security: Traefik supports HTTPS with automatic Let's Encrypt certificate management for secure connections.
Traefik Architecture
Traefik's architecture consists of three main components:
- Frontends: Frontends represent the entrance to your system. They enable you to define the network entry points by selecting the listening addresses and ports, and the protocols used.
- Backends: Backends represent the services or servers that Traefik forwards the requests to. They can be dynamic or static, such as Docker based or on a raw TCP server.
- Middlewares: Middlewares are used to apply some configuration to the matching routes. They can be composed and reused to make your Traefik configuration powerful but straightforward.
Configuring Traefik Reverse Proxy on Docker
Here follows the step-by-step instructions to set up Traefik for reverse proxy on a Docker host with multiple web applications.
Step 1: Install Docker
Ensure Docker is installed on your server. You can download Docker from the official website:
curl -fsSL https://get.docker.com -o get-docker.sh
sudo sh get-docker.sh
Step 2: Configure Traefik Docker
Create a folder named traefik-configs to save Traefik's configuration files and set up Traefik's docker-compose.yml.
mkdir ~/traefik-configs
Append the following content in your traefik-configs/docker-compose.yml file:
version: '3.7'
services:
traefik:
image: traefik:v2.5
container_name: traefik
command: -api
```less
-log.level=INFO
-providers.docker
-providers.docker.exposedbydefault=false
-entrypoints.websecure.address=:443
-certificatesresolvers.myresolver.acme.email=your-email@example.com
-certificatesresolvers.myresolver.acme.storage=/letsencrypt/acme.json
-certificatesresolver.myresolver.acme.httpchallenge.entrypoint=web