1下载安装包地址
https://github.com/coreos/flannel/releases
2.部署flannel网路之前，提前安装好docker 参考《Yum 安装Docker》
同时，需要向etcd 中写入一个子网，该子网就是为每一个docker 节点分配一个不同的小子网
[root@dn01 ~]# /opt/etcd/bin/etcdctl --ca-file=/root/k8s/etcd-cert/ca.pem --cert-file=/opt/etcd/ssl/server.pem --key-file=/opt/etcd/ssl/server-key.pem --endpoints="https://10.10.100.30:2379,https://10.10.100.31:2379,https://10.10.100.32:2379" set /coreos.com/network/config '{ "Network": "172.17.0.0/16", "Backend": {"Type": "vxlan"}}' { "Network": "172.17.0.0/16", "Backend": {"Type": "vxlan"}}