How to mae Traefik as reverse-proxy with docker-compose? - docker

Question

I have docker-compose build with symfony on apache and angular on nginx. It is possible that more docker-compositions can be run, so now I want to make my own DNS using traefik - I want to set hostname of each app, make docker-compose up and resolve apps with hostname when they are ready.
Traefik docker-compose:
version: '3.1'
networks:
proxy:
external: true
internal:
external: false
services:
traefik:
image: traefik:v2.1
command: --api.insecure=true --providers.docker
labels:
- traefik.frontend.rule=Host:monitor.docker.localhost
- traefik.port=8080
networks:
- proxy
ports:
- 80:80
- 8080:8080
volumes:
- /var/run/docker.sock:/var/run/docker.sock
Apps docker-compose:
# Run docker-compose build
# Run docker-compose up
# Live long and prosper
version: '3.1'
networks:
proxy:
external: true
internal:
external: false
services:
apache:
build: .docker/apache
container_name: sf4_apache
volumes:
- .docker/config/vhosts:/etc/apache2/sites-enabled
- ./backend:/home/wwwroot/sf4
depends_on:
- php
labels:
- traefik.http.routers.sf4_apache.rule=Host(`symfony.docker.localhost`)
- traefik.http.services.apache.loadbalancer.server.port=80
networks:
- internal
- proxy
php:
build: .docker/php
container_name: sf4_php
volumes:
- ./backend:/home/wwwroot/sf4
- ./executor:/home/wwwroot/pipe
networks:
- internal
labels:
- traefik.enable=false
nginx:
container_name: angular_nginx
build: .docker/nginx
volumes:
- ./frontend/dist/frontend:/usr/share/nginx/html
ports:
- "81:80"
- "443:443"
labels:
- traefik.http.routers.angular_nginx.rule=Host(`angular.docker.localhost`)
networks:
- internal
- proxy
node:
build: .docker/node
container_name: angular_node
ports:
- 4200:4200
volumes:
- ./frontend:/home/node/app/frontend
tty: true
command:
- /bin/sh
- -c
- |
cd /home/node/app/frontend && npm start
expose:
- "4200"
networks:
- internal
labels:
- traefik.enable=false
Can't make it work: sometimes I get Bad Gateway at domains (symfony.docker.localhost), sometimes it crushed because both servers using one port, so please help me to run this correctly

Answer 1

First, docker frontend and backend are deprecated in version 2.1 check this link
here is an example of doing the same in traefik 2.1
version: '3.7'
networks:
traefik:
external: true
volumes:
db_data:
services:
proxy:
image: traefik:v2.1
command:
- '--providers.docker=true'
- '--entryPoints.web.address=:80'
- '--providers.providersThrottleDuration=2s'
- '--providers.docker.watch=true'
- '--providers.docker.swarmMode=true'
- '--providers.docker.swarmModeRefreshSeconds=15s'
- '--providers.docker.exposedbydefault=false'
- '--providers.docker.defaultRule=Host("local.me")'
- '--accessLog.bufferingSize=0'
- '--api=true'
- '--api.dashboard=true'
- '--api.insecure=true'
- '--ping.entryPoint=web'
volumes:
- '/var/run/docker.sock:/var/run/docker.sock:ro'
ports:
- '80:80'
- '8080:8080'
deploy:
restart_policy:
condition: any
delay: 5s
max_attempts: 3
window: 120s
update_config:
delay: 10s
order: start-first
parallelism: 1
rollback_config:
parallelism: 0
order: stop-first
logging:
driver: json-file
options:
'max-size': '10m'
'max-file': '5'
networks:
- traefik
mysql:
image: mysql:5.7
command: mysqld --general-log=1 --general-log-file=/var/log/mysql/general-log.log
deploy:
restart_policy:
condition: any
delay: 5s
max_attempts: 3
window: 120s
update_config:
delay: 10s
order: start-first
parallelism: 1
rollback_config:
parallelism: 0
order: stop-first
logging:
driver: json-file
options:
'max-size': '10m'
'max-file': '5'
networks:
- traefik
volumes:
- db_data:/var/lib/mysql
environment:
MYSQL_ROOT_PASSWORD: dummy
MYSQL_DATABASE: rails_blog_production
rails_blog_web:
image: wshihadeh/rails_blog:demo-v1
command: 'web'
deploy:
labels:
- traefik.enable=true
- traefik.http.services.blog.loadbalancer.server.port=8080
- traefik.http.routers.blog.rule=Host(`blog.local.me`)
- traefik.http.routers.blog.service=blog
- traefik.http.routers.blog.entrypoints=web
- traefik.docker.network=traefik
restart_policy:
condition: any
delay: 5s
max_attempts: 3
window: 120s
update_config:
delay: 10s
order: start-first
parallelism: 1
rollback_config:
parallelism: 0
order: stop-first
logging:
driver: json-file
options:
'max-size': '10m'
'max-file': '5'
networks:
- traefik
depends_on:
- mysql
environment:
DATABASE_URL: mysql2://root:dummy#mysql/rails_blog_production
RAILS_SERVE_STATIC_FILES: 'true'
for more information, you can check this blog post