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Træfik 2.0 into API Platform

Introduction
Factorization P1
Multiple instances
Factorization P2
Scaling
Security

Introduction

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introduction factorization-p1

In this part, we are starting from API Platform plain base to implement functional basic traefik instance

Factorization P1

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factorization-p1 multiple-instances

Take back our modifications from this part located in factorization-p1 folder to factorise our setup to edit less things that will be shared to many labels

Multiple instances

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multiple-instance factorization-p2

Use only one instance of API Platform is so sad, so, in this part we will use one shared træfik instance with many API Platform instances. It will work with many other docker-compose duplication containers using same ports

To handle that, we will deal with networks docker-compose clusterisation.
From now Træfik instance will only be into external folder

Factorization P2

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factorization-p2 scaling

Setup regex to resolve multiple subdomains and domains and manage applications from .env

Scaling

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scaling security

If you have to deploy more than one instance of one service, you should use scale docker swarm command instead of duplicate your app. Then it will introduce a very cool thing : load-balancing by Træefik
This load-balancing is incremental modulo load-balancing so, you don't have logic behind this but in many apps it should be ok. In bigger app you should use kubernetes orchestration to handle the load-balancing
We will use a whoami container built by Emile Vauge, it's a lightweight go server container then after implement it, launched it, scale it doing

docker-compose up -d --scale whoami=3

just curl whoami.domain.com to bypass browser cache and you'll see the IP will load balance into 3 different IPs

Security & SSL

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security final

Setup fail2ban linked to Traefik and other containers and central logging.
Then setup SSL (working on production only) using Let's Encrypt Authority X3