docker-compose.yml相干字段
- ENTRYPOINT_MODE 有vip模式和dnssr模式，vip模式就是应用多个容器对立的虚构ip，dnsrr就是应用实在的IP，而后轮询ip，默认应用vip模式
- MODE 一种是global、一种是replicated，前者不反对横向扩大，后者反对。
- PLACEMENT 指定容器部署的节点、操作系统等等。
- RESOURCES 次要是做一些CPU、内存等资源的限度
- RESTART_POLICY 用于设定容器主动重启的条件
- update_config 用于更新时候的配置
应用docker-compose.yml在swarm上部署
version: '3'services: web: image: wordpress ports: - 8080:80 depends_on: - mysql environment: WORDPRESS_DB_HOST: mysql WORDPRESS_DB_PASSWORD: root networks: - wordpress-overlay deploy: mode: replicated replicas: 3 restart_policy: condition: on-failure delay: 5s max_attempts: 3 update_config: parallelism: 1 delay: 10s mysql: image: mysql:5.7 environment: MYSQL_ROOT_PASSWORD: root MYSQL_DATABASE: wordpress volumes: - mysql-data:/var/lib/mysql networks: - wordpress-overlay deploy: mode: global placement: constraints: - node.role == managervolumes: mysql-data:networks: wordpress-overlay: driver: overlay配置部署
docker stack deploy -c docker-compose.yml wordpress查看散布
[vagrant@swarm-manager wordpress-overlay]$ docker stack services wordpressID NAME MODE REPLICAS IMAGE PORTSgzhzyuo71ycz wordpress_web replicated 3/3 wordpress:latest *:8080->80/tcpv2lsqkq0sjr3 wordpress_mysql global 1/1 mysql:5.7应用如下三个链接都是能够拜访的
http://192.168.205.10:8080http://192.168.205.11:8080http://192.168.205.12:8080销毁stack
docker stack rm wordpress