Blue-Green Deployment
This repository contains the files for the docker image hanzel/blue-green, that will create blue-green deployment. It uses nginx using consul template. It requires consul as the key value store and registrator service running in each host. It works with docker swarm and multi-host networking.
Usage
Set the following environment variables:
BLUE_NAME: The container name that we want as the blue service. Default:blue.GREEN_NAME: The container name that we want as the green service. Default:green.LIVE: The service that is in production initially. Default:blue.CONSUL_URL: URL endpoint for consul instance.
Docker Compose
Sample docker-compose.yml configuration is given below:
version: '2'
services:
bg:
image: hanzel/blue-green
container_name: bg
ports:
- "80:80"
- "8080:8080"
environment:
- CONSUL_URL=${IP}:8500
- BLUE_NAME=blue
- GREEN_NAME=green
- LIVE=blue
depends_on:
- green
- blue
networks:
- front-tier
blue:
image: hanzel/nginx-html:1
ports:
- "80"
environment:
- SERVICE_80_NAME=blue
networks:
- front-tier
green:
image: hanzel/nginx-html:2
ports:
- "80"
environment:
- SERVICE_80_NAME=green
networks:
- front-tier
networks:
front-tier:
driver: bridge
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