搭建环境
supernode ：阿里云主机一台 aly1（Centos 6.5）
edg2node：美团云机器两台 mty1,mty2（Centos 7.0）
Step-1 各机器安装subviersion 并编译安装n2n_v1
#很重要，确保gcc和ssl版本一致，
yum install subversion gcc-c++ openssl-devel
svn co https://svn.ntop.org/svn/ntop/trunk/n2n
cd n2n/n2n_v1/
make && make install
cp supernode /usr/sbin/
cp edge /usr/sbin/
Step-2 中心节点super aly1 开启服务和端口
远程登录至aly1
vim /etc/sysconfig/iptables
*filter下配置
-A INPUT -p tcp -m tcp --dport 1000 -j ACCEPT
iptables save
#启动supernode （注：此处开放端口在配置边缘节点机器时用）
supernode -l 1000 -v >/dev/null &
Step-3配置边缘节点机器
分别登录两台美团云机器，设置边缘节点（xxx.xxx.xxx.xxx:1000 即为阿里云super机器ip）
边缘节点1
edge -d n2n0 -c mynetwork -k encryptme -a 10.0.0.1 -l xxx.xxx.xxx.xxx:1000 >/dev/null &
边缘节点2
edge -d n2n0 -c mynetwork -k encryptme -a 10.0.0.2 -l xxx.xxx.xxx.xxx:1000 >/dev/null &
Step-4 验证n2n网络通讯
在节点1 ping 10.0.0.2 ，在节点2 ping 10.0.0.1 网络正常。
ssh 10.0.0.x可互联。
n2n网络搭建完成。
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n2n的命令详解
1 edge -d <tun device> -a <tun IP address> -c <community> -k <encrypt key> -s <netmask> [-u <uid> -g <gid>][-f][-m <MAC address>] 2 -l <supernode host:port> [-p <local port>] [-M <mtu>] [-t] [-r] [-v] [-b] [-h] 3 4 -d <tun device> | tun device name 5 -a <tun IP address> | n2n IP address 6 -c <community> | n2n community name 7 -k <encrypt key> | Encryption key (ASCII) - also N2N_KEY=<encrypt key> 8 -s <netmask> | Edge interface netmask in dotted decimal notation (255.255.255.0) 9 -l <supernode host:port> | Supernode IP:port 10 -b | Periodically resolve supernode IP 11 | (when supernodes are running on dynamic IPs) 12 -p <local port> | Local port used for connecting to supernode 13 -u <UID> | User ID (numeric) to use when privileges are dropped 14 -g <GID> | Group ID (numeric) to use when privileges are dropped 15 -f | Fork and run as a daemon. Use syslog. 16 -m <MAC address> | Choose a MAC address for the TAP interface 17 | eg. -m 01:02:03:04:05:06 18 -M <mtu> | Specify n2n MTU (default 1400) 19 -t | Use http tunneling (experimental) 20 -r | Enable packet forwarding through n2n community 21 -v | Verbose