設置 Docker Swarm 環境

docker swarm init

docker-compose.yml

version: '3.8'

services:
  web:
    image: your-flask-app-image
    deploy:
      replicas: 3
      update_config:
        parallelism: 2
        delay: 10s
      restart_policy:
        condition: on-failure
    ports:
      - "5000:5000"
    networks:
      - webnet

  redis:
    image: redis:alpine
    networks:
      - webnet

networks:
  webnet:

部署應用:

docker stack deploy -c docker-compose.yml your_stack_name

檢查服務狀態:

docker service ls

檢查應用狀態:

docker stack ps your_stack_name

擴展或縮減服務:

docker service scale your_stack_name_web=5