docker exec -it n1 bash

apt-get update

apt-get install keepalived 

apt-get install vim

        再次之前要配置VIP虚拟IP   docker network create --subnet=192.168.99.151/16 net1

        docker network ls

                                 这里还要设置下vim 无法粘贴问题

vi /etc/keepalived/keepalived.conf

启动keepalived

service keepalived start

docker run -it -d --name n2 -v /home/n2/nginx.conf:/etc/nginx/nginx.conf --net=host --privileged nginx

重复上面步骤