1.work节点安装运行docker-daemon
执行：
$ sudo systemctl stop docker.service $ sudo dockerd -H fd：// -H unix：///var/run/docker.sock -H tcp：//0.0.0.0：2375 --default-ulimit = nofile = 8192：16384 --default-ulimit = nproc = 8192：16384 -D ＆
报错：
Failed to load listeners: no sockets found via socket activation: make sure the service was started by systemd
解决：
去掉 -H fd：//
2.master测试链接work
执行：
$ docker -H 192.168.0.13:2375 info
报错：
error during connect: Get http://192.168.0.13:2375/v1.38/info: dial tcp 192.168.0.13:2375: connect: no route to host
解决：
开放2375端口
firewall-cmd --permanent --add-port=2375/tcp
firewall-cmd --reload