部署flannel网络需要执行以下步骤：
1）写入分配的子网段到etcd，供flanneld使用 2）下载二进制包 3）配置Flannel 4）systemd管理Flannel 5）配置Docker启动指定子网段 6）启动第一步：下载flannel二进制包
wget https://github.com/coreos/flannel/releases/download/v0.9.1/flannel-v0.9.1-linux-amd64.tar.gz第二步：解压flannel二进制包并且复制到其他节点
//解压二进制文件 tar -zxvf flannel-v0.9.1-linux-amd64.tar.gz //将可执行文件flanneld mk-docker-opts.sh复制发送到其他节点 scp flanneld mk-docker-opts.sh root@172.16.163.130:/opt/kubernetes/bin/第三步：写入分配的子网段到etcd，供flanneld使用
/opt/kubernetes/bin/etcdctl \ --ca-file=ca.pem --cert-file=server.pem --key-file=server-key.pem \ --endpoints="https://172.16.163.131:2379,https://172.16.163.130:2379,https://172.16.163.129:2379" \ set /coreos.com/network/config '{ "Network": "172.17.0.0/16", "Backend": {"Type": "vxlan"}}'第四步：编写flanneld配置文件
NNEL_OPTIONS="--etcd-endpoints=https://172.16.163.131:2379,https://172.16.163.130:2379,https://172.16.163.129:2379 -etcd-cafile=/opt/kubernetes/ssl/ca.pem -etcd-certfile=/opt/kubernetes/ssl/server.pem -etcd-keyfile=/opt/kubernetes/ssl/server-key.pem"第五步：编写flanneld.service配置文件
[Unit] Description=Flanneld overlay address etcd agent After=network-online.target network.target Before=docker.service [Service] Type=notify EnvironmentFile=/opt/kubernetes/cfg/flanneld ExecStart=/opt/kubernetes/bin/flanneld --ip-masq $FLANNEL_OPTIONS ExecStartPost=/opt/kubernetes/bin/mk-docker-opts.sh -k DOCKER_NETWORK_OPTIONS -d /run/flannel/subnet.env Restart=on-failure [Install] WantedBy=multi-user.target第六步：docker.service配置文件
[Unit] Description=Docker Application Container Engine Documentation=https://docs.docker.com After=network-online.target firewalld.service containerd.service Wants=network-online.target [Service] Type=notify EnvironmentFile=/run/flannel/subnet.env ExecStart=/usr/bin/dockerd $DOCKER_NETWORK_OPTIONS ExecReload=/bin/kill -s HUP $MAINPID LimitNOFILE=infinity LimitNPROC=infinity LimitCORE=infinity TimeoutStartSec=0 Delegate=yes KillMode=process Restart=on-failure StartLimitBurst=3 StartLimitInterval=60s [Install] WantedBy=multi-user.target以上配置好了之后，需要将flanneld配置文件，flanneld.service文件，docker.service文件，复制到其他节点。
第七步：启动服务
systemctl daemon-reload systemctl start flanneld systemctl enable flanneld systemctl restart docker最后配置结果截图
转载于:https://www.cnblogs.com/jasonboren/p/11483926.html
