Proxmox VE同时配置NAT共享IP和独立IP虚拟机
配置桥接网卡,使Proxmox VE(PVE)可以同时创建NAT虚拟机和独立IP虚拟机,同时可以使用脚本映射NAT虚拟机的端口到外网
网卡配置
编辑PVE主机的网卡文件
nano /etc/network/interfaces
# This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). source /etc/network/interfaces.d/* auto lo iface lo inet loopback allow-hotplug enp4s0 iface enp4s0 inet manual auto vmbr0 iface vmbr0 inet static address 192.168.3.1/24 netmask 255.255.255.0 gateway 192.168.3.1 bridge-ports enp4s0 bridge-stp off bridge-fd 0 auto vmbr1 iface vmbr1 inet static address 172.16.1.1 netmask 255.255.255.0 bridge_ports none bridge_stp off bridge_fd 0 post-up echo 1 > /proc/sys/net/ipv4/ip_forward post-up bash /root/iptables.config.sh post-up iptables -t nat -A POSTROUTING -s '172.16.1.0/16' -o vmbr0 -j MASQUERADE post-down iptables -t nat -D POSTROUTING -s '172.16.1.0/16' -o vmbr0 -j MASQUERADE
物理机的网卡名为enp4s0,vmbr0为独立IP虚拟机的桥接网卡,自行修改为正确的信息;vmbr1为NAT虚拟机的桥接网卡,可以使用172.16.1.2-255这些内网IP
开通独立IP虚拟机的时候桥接网卡选择vmbr0,NAT虚拟机选择vmbr1
NAT转发
很多时候,NAT虚拟机单单能连接外部网络是不够的,还需要外部网络能够访问到虚拟机内部的服务,比如ssh,rdp等。 端口映射可以使用iptables来完整 脚本1 iptables.sh #! /bin/bash PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin export PATH #ConfFile iptablesconf='/root/iptables.config.sh' function rootness(){ if [[ $EUID -ne 0 ]]; then echo "脚本需要以ROOT权限运行!" exit 1 fi } function conf_list(){ cat $iptablesconf } function conf_add(){ if [ ! -f $iptablesconf ];then echo "找不到配置文件!" exit 1 fi echo "请输入虚拟机的内网IP" read -p "(Default: Exit):" confvmip [ -z "$confvmip" ] && exit 1 echo echo "虚拟机内网IP = $confvmip" echo while true do echo "请输入虚拟机的端口:" read -p "(默认端口: 22):" confvmport [ -z "$confvmport" ] && confvmport="22" expr $confvmport + 0 &>/dev/null if [ $? -eq 0 ]; then if [ $confvmport -ge 1 ] && [ $confvmport -le 65535 ]; then echo echo "虚拟机端口 = $confvmport" echo break else echo "输入错误,端口范围应为1-65535!" fi else echo "输入错误,端口范围应为1-65535!" fi done echo while true do echo "请输入宿主机的端口" read -p "(默认端口: 8899):" natconfport [ -z "$natconfport" ] && natconfport="8899" expr $natconfport + 0 &>/dev/null if [ $? -eq 0 ]; then if [ $natconfport -ge 1 ] && [ $natconfport -le 65535 ]; then echo echo "宿主机端口 = $natconfport" echo break else echo "输入错误,端口范围应为1-65535!" fi else echo "输入错误,端口范围应为1-65535!" fi done echo "请输入转发协议:" read -p "(tcp 或者 udp ,回车默认操作: 退出):" conftype [ -z "$conftype" ] && exit 1 echo echo "协议类型 = $conftype" echo iptablesshell="iptables -t nat -A PREROUTING -i vmbr0 -p $conftype --dport $natconfport -j DNAT --to-destination $confvmip:$confvmport" if [ `grep -c "$iptablesshell" $iptablesconf` != '0' ]; then echo "配置已经存在" exit 1 fi get_char(){ SAVEDSTTY=`stty -g` stty -echo stty cbreak dd if=/dev/tty bs=1 count=1 2> /dev/null stty -raw stty echo stty $SAVEDSTTY } echo echo "回车继续,Ctrl+C退出脚本" char=`get_char` echo $iptablesshell >> $iptablesconf runreturn=`$iptablesshell` echo $runreturn echo '配置添加成功' } function add_confs(){ rootness conf_add } function del_conf(){ echo while true do echo "请输入宿主机的端口" read -p "(默认操作: 退出):" confserverport [ -z "$confserverport" ] && exit 1 expr $confserverport + 0 &>/dev/null if [ $? -eq 0 ]; then if [ $confserverport -ge 1 ] && [ $confserverport -le 65535 ]; then echo echo "宿主机端口 = $confserverport" echo break else echo "输入错误,端口范围应为1-65535!" fi else echo "输入错误,端口范围应为1-65535!" fi done echo iptablesshelldel=`cat $iptablesconf | grep "dport $confserverport"` if [ ! -n "$iptablesshelldel" ]; then echo "配置文件中没有该宿主机的端口" exit 1 fi iptablesshelldelshell=`echo ${iptablesshelldel//-A/-D}` runreturn=`$iptablesshelldelshell` echo $runreturn sed -i "/$iptablesshelldel/d" $iptablesconf echo '配置删除成功' } function del_confs(){ printf "你确定要删除配置吗?操作是不可逆的(y/n) " printf "\n" read -p "(默认: n):" answer if [ -z $answer ]; then answer="n" fi if [ "$answer" = "y" ]; then rootness del_conf else echo "配置删除操作取消" fi } action=$1 case "$action" in add) add_confs ;; list) conf_list ;; del) del_confs ;; *) echo "参数错误! [${action} ]" echo "用法: `basename $0` {add|list|del}" ;; esac 脚本2 iptables.config.sh (配置文件) #!/usr/bin/env bash 使用方法: 上传iptables.sh和iptables.config.sh 脚本到宿主机root目录,赋予iptables.config.sh可执行权限 bash iptables.sh add #添加端口映射 bash iptables.sh del #删除端口映射 ———————————————— 参考 https://pve.proxmox.com/wiki/Network_Configuration
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