Traefik Ondemand Plugin

Traefik middleware to start containers on demand.

Features

• Support for Docker containers
• Support for Docker swarm mode, scale services
• Support for Kubernetes Deployments and Statefulsets
• Start your container/service on the first request
• Automatic scale to zero after configured timeout upon last request the service received
• Dynamic loading page (cloudflare or grafana cloud style)

Usage

Plugin configuration

testData:
  serviceUrl: http://ondemand:10000
  name: TRAEFIK_HACKATHON_whoami
  timeout: 1m

Parameter	Type	Example	Description
serviceUrl	string	http://ondemand:10000	The docker container name, or the swarm service name
name	string	TRAEFIK_HACKATHON_whoami	The container/service to be stopped (docker ps
timeout	time.Duration	1m30s	The duration after which the container/service will be scaled down to 0

Traefik-Ondemand-Service

The traefik-ondemand-service must be used to bypass Yaegi limitations.

Yaegi is the interpreter used by Traefik to load plugin and run them at runtime.

The docker library that interacts with the docker deamon uses unsafe which must be specified when instanciating Yaegi. Traefik doesn't, and probably never will by default.

Examples

• Docker Classic
• Docker Swarm
• Multiple Containers
• Kubernetes

Authors

Alexis Couvreur (left) Alexandre Hiltcher (middle) Matthias Schneider (right)