本文最后更新于 2020年08月13日
差不多可以抛弃docker-compose了。docker-compose被docker官方定位于开发，而不是部署，docker官方的建议是，使用docker stack 来部署容器
并且docker stack 是原生内置于docker，不需要单独安装，二者之间的差异，可以参照官方文档。当然企业中依然是K8S为主导地位
简单示例
我推荐WordPress的官方文档，写的非常详细，简单明了
docker stack 兼容 V3版本，基本无需修改即可使用
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | version: '3.1'services: wordpress: image: wordpress restart: always ports: - 8080:80 environment: WORDPRESS_DB_HOST: db WORDPRESS_DB_USER: exampleuser WORDPRESS_DB_PASSWORD: examplepass WORDPRESS_DB_NAME: exampledb volumes: - wordpress:/var/www/html db: image: mysql:5.7 restart: always environment: MYSQL_DATABASE: exampledb MYSQL_USER: exampleuser MYSQL_PASSWORD: examplepass MYSQL_RANDOM_ROOT_PASSWORD: '1' volumes: - db:/var/lib/mysqlvolumes: wordpress: db: |
-c 指定yml文件，deploy可以换成up
1 | docker stack deploy -c stack.yml wordpress |
CLI
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | root@debian:~# docker stack deploy --helpUsage: docker stack deploy [OPTIONS] STACKDeploy a new stack or update an existing stackAliases: deploy, upOptions: --bundle-file string Path to a Distributed Application Bundle file -c, --compose-file strings Path to a Compose file, or "-" to read from stdin --orchestrator string Orchestrator to use (swarm|kubernetes|all) --prune Prune services that are no longer referenced --resolve-image string Query the registry to resolve image digest and supported platforms ("always"|"changed"|"never") (default "always") --with-registry-auth Send registry authentication details to Swarm agents |
初始化
第一次使用docker stack需要初始化
1 | docker swarm init |
1 | this node is not a swarm manager. Use "docker swarm init" or "docker swarm join" to connect this node to swarm and try again |
