1 yum安装flannel包： yum install flannel -y
2 编辑配置文件 vim /etc/sysconfig/flanneld
FLANNEL_ETCD_ENDPOINTS="http://192.168.233.130:2379"
FLANNEL_ETCD_PREFIX="/coreos.com/network"
#FLANNEL_OPTIONS=""
3 flannel网络依赖etcd存储，启动flanneld服务前需在etcd存储里添加配置： etcdctl set /coreos.com/network/config '{ "Network": "10.1.0.0/16" }'
4 启动flanneld服务前必须先关闭docker服务： systemctl stop docker systemctl start flanneld
5 flanneld服务会通过执行脚本mk-docker-opts.sh在目录/run/flannel下面生成两个文件。
/run/flannel/docker /run/flannel/subnet.env /usr/lib/systemd/system/docker.service.d/flannel.conf指向/run/flannel/docker
6 systemctl start docker:
7 查看etcd： [root@master ~]# etcdctl get /coreos.com/network/subnets/10.1.95.0-24 {"PublicIP":"192.168.233.128"} [root@master ~]# etcdctl get /coreos.com/network/subnets/10.1.39.0-24 {"PublicIP":"192.168.233.129"} [root@master ~]# etcdctl get /coreos.com/network/config { "Network": "10.1.0.0/16" } [root@master ~]#
