Integrating Traefik with the WordPress Stack

Now, if you want to do the same thing for the WordPress stack that we created in the previous section, you need to adapt your compose file by adding the right labels to the WordPress service.

To start, create the external network that will be used by both Traefik and the WordPress stack:

docker network create --driver overlay --attachable wordpress

Re-deploy Traefik as a front-end load balancer as explained in the previous section.

cd $HOME && mkdir -p traefik && cd traefik && cat < docker-compose.yml && \
docker stack deploy -c docker-compose.yml traefik
services:
  reverse-proxy:
    image: traefik:v3.6.7
    command:
      - "--entrypoints.web.address=:80"
      - "--api.insecure=true"
      - "--providers.swarm=true"
      - "--providers.swarm.endpoint=unix:///var/run/docker.sock"
      - "--providers.swarm.exposedByDefault=false"
    ports:
      - "80:80"
      - "8080:8080"
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    deploy:
      labels:
        traefik.enable: "False"
      placement:
        constraints:
          - node.role == manager
    networks:
      - wordpress
networks:
  wordpress:
    external: true
EOF

Before moving to the second step, create the folder wordpress and add the secrets to it:

cd $HOME && mkdir -p wordpress

# add the secrets
echo "your_db_root_password" > wordpress/.root_password.txt
echo "your_db_wordpress_password" > wordpress/.password.txt

Export MANAGER_NODE_IP to use it in the docker-compose.yml file:

MANAGER_NODE_IP=

Let's see the full docker-compose.yml file:

cd $HOME && cat < wordpress/docker-compose.yml && \
docker stack deploy -c wordpress/docker-compose.yml wordpress
services:
  db:
    image: mysql:9.6.0
    volumes:
      - db_data:/var/lib/mysql
    environment:
      MYSQL_ROOT_PASSWORD_FILE: /run/secrets/db_root_password
      MYSQL_DATABASE: wordpress
      MYSQL_USER: wordpress
      MYSQL_PASSWORD_FILE: /run/secrets/db_password
    secrets:
      - db_root_password
      - db_password
    networks:
      - internal
    deploy:
      placement:
        constraints:
          -

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