Docker 搭建swarm集群

• 在本地三台服务器上搭建docker 集群

1. docker run hello-world
   docker: Cannot connect to the Docker daemon. Is the docker daemon running on this host?.

** 原因**: 为正确启动服务:

systemctl daemon-reload
sudo service docker restart
sudo service docker status
sudo docker run hello-world

重启后正常.

• 分别在三台服务器启动docker 服务

• docker pull swarm

• 防火墙
  firewall -cmd --state
  //查看防火墙状态
  systemctl stop firewalld
  // 关闭防火墙
  systemctl start firewalld
  //开启防火墙
  systemctl disable firewalld
  //禁止防火墙开机启动

• 启动swarm
  docker swarm init --advertise-addr 192.168.1.1 --listen-addr 192.168.1.1:2377
  docker swarm init --advertise-addr 192.168.1.2 --listen-addr 192.168.1.2:2377
  docker swarm init --advertise-addr 192.168.1.3 --listen-addr 192.168.1.3:2377

1.初始化
docker swarm init --advertise-addr 192.168.1.1
[bonc@pingxiaogang08 ~]$ docker swarm init --advertise-addr 192.168.70.8
Swarm initialized: current node (s4t47u5w1gmf5y7ae7uothcwp) is now a manager.

To add a worker to this swarm, run the following command:

docker swarm join --token SWMTKN-1-1q5e26n88kr47ccaiswzf4enc6trhqm07y5demu33d9thugun7-0we1tt941r9fj1nxoga97cw8d 192.168.70.8:2377

To add a manager to this swarm, run ‘docker swarm join-token manager’ and follow the instructions.

2.添加节点

docker swarm join --token SWMTKN-1-1q5e26n88kr47ccaiswzf4enc6trhqm07y5demu33d9thugun7-0we1tt941r9fj1nxoga97cw8d 192.168.70.8:2377

• 完成