traefik-builder.sh

gistfile1.txt

#!/bin/bash
IMAGE=$1
CNAME=$2
PORT=$3

function buildTraefik {

  cat << EOF > ~/up.sh
#!/bin/bash
docker image rm ${IMAGE}
docker pull ${IMAGE}
docker stack deploy -c stack-compose.yml traefik
EOF

  cat << EOF > down.sh
#!/bin/bash
docker stack rm traefik
EOF

  cat << EOF > ~/traefik.yml
entryPoints:
  http:
    address: ":80"
  https:
    address: ":443" 
serversTransport:
   insecureSkipVerify: true     
providers:
  docker:
    endpoint: "unix:///var/run/docker.sock"
EOF


  cat << EOF > ~/stack-compose.yml
version: "3"
services:
  # INVIZZO CLOUD NETWORK
  # do not open the port using ports: when using traefik loadbalancer
  # images has they own default port, depending of the service image running
  # so for internal usage, we do not need to expose or configure it, 
  # just route to default port using loadbalancer label
  ##################################################
  # traefik proxy
  proxy:
    image: traefik:v2.9
    command: --providers.docker # see traefik.yml for full traefik configuration labels
    ports:
      - "80:80"
    volumes:
      - /etc/localtime:/etc/localtime:ro
      - /var/run/docker.sock:/var/run/docker.sock
      - ./traefik.yml:/traefik.yml
    labels:
      - "traefik.docker.network=traefic_proxy"
      - "traefik.enable=true"
  
  ######################################################
  # spring-boot application
  application-srv:
    image: ${IMAGE}
    hostname: application-srv
    deploy:
      mode: replicated
      replicas: 2
      restart_policy:
        condition: any
        delay: 5s
        max_attempts: 3
        window: 120s  
      #resources:
      #  limits:
      #    cpus: '0.75'
      #    memory: 512M
      #    pids: 1
      #  reservations:
      #    cpus: '0.25'
      #    memory: 256M
    labels:
      - "traefik.http.routers.application-srv.rule=Host(\`${CNAME}.kgsc.com.br\`)"
      - "traefik.http.services.application-srv.loadbalancer.server.port=${PORT}"
      - "traefik.http.services.application-srv.loadbalancer.server.scheme=http"
      - "traefik.http.routers.application-srv.entrypoints=http"
EOF

}

if [ -z "$IMAGE" ] || [ -z "$CNAME" ] || [ -z "$PORT" ]; 
  then
    echo "Usage: $0 <image> <cname> <port>"
    exit 1
  else
    buildTraefik
fi;