创立一个overlay驱动的网络
docker network create -d overlay wordpress[vagrant@swarm-manager ~]$ docker network lsNETWORK ID NAME DRIVER SCOPEq3rp3i79eud7 wordpress overlay swarm创立mysql容器
docker service create --name mysql --env MYSQL_ROOT_PASSWORD=root --env MYSQL_DATABASE=wordpress --network wordpress --mount type=volume,source=mysql-data,destination=/var/lib/mysql mysql创立wordpress
docker service create --name wordpress -p 80:80 --env WORDPRESS_DB_PASSWORD=root --env WORDPRESS_DB_HOST=mysql --network wordpress wordpress查看节点散布
# 服务列表[vagrant@swarm-manager ~]$ docker service lsID NAME MODE REPLICAS IMAGE PORTSvxz0bfmul9th mysql replicated 1/1 mysql:5.7.22cpe3wqrsoqxi wordpress replicated 1/1 wordpress:latest *:80->80/tcp# wordpress服务的节点散布[vagrant@swarm-manager ~]$ docker service ps wordpressID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTStnh4f0ldyidl wordpress.1 wordpress:latest swarm-manager Running Running 4 minutes ago# mysql服务的节点散布[vagrant@swarm-manager ~]$ docker service ps mysqlID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTSjns8bllzbz94 mysql.1 mysql:5.7.22 swarm-work1 Running Running 33 minutes ago尽管 wordpress 只散布在了swarm-manager（192.168.205.10）这一个节点上，然而咱们发现应用如下链接拜访，成果都是一样的，是不是很神奇。。。具体起因详见7.6
http://192.168.205.10/http://192.168.205.11/http://192.168.205.12/在 swarm 模式下，无需装置etcd，swarm会主动帮咱们保护好分布式的overlay网络