1*cde5492fSlogin#!/bin/bash 2*cde5492fSlogin# 设置 bridge 名称 3*cde5492fSloginBRIDGE=dragonos-bridge 4*cde5492fSlogin# 设置网络信息 5*cde5492fSloginNETWORK=192.168.137.0 6*cde5492fSloginNETMASK=255.255.255.0 7*cde5492fSloginGATEWAY=192.168.137.1 8*cde5492fSloginDHCPRANGE=192.168.137.100,192.168.137.200 9*cde5492fSlogin# 启用PXE支持的可选参数 10*cde5492fSloginTFTPROOT= 11*cde5492fSloginBOOTP= 12*cde5492fSlogin 13*cde5492fSloginfunction check_bridge() 14*cde5492fSlogin{ 15*cde5492fSlogin if brctl show | grep "^$BRIDGE" &> /dev/null; then 16*cde5492fSlogin return 1 17*cde5492fSlogin else 18*cde5492fSlogin return 0 19*cde5492fSlogin fi 20*cde5492fSlogin} 21*cde5492fSlogin 22*cde5492fSloginfunction create_bridge() 23*cde5492fSlogin{ 24*cde5492fSlogin brctl addbr "$BRIDGE" 25*cde5492fSlogin brctl stp "$BRIDGE" on 26*cde5492fSlogin brctl setfd "$BRIDGE" 0 27*cde5492fSlogin ifconfig "$BRIDGE" "$GATEWAY" netmask "$NETMASK" up 28*cde5492fSlogin} 29*cde5492fSlogin 30*cde5492fSloginfunction enable_ip_forward() 31*cde5492fSlogin{ 32*cde5492fSlogin echo 1 > /proc/sys/net/ipv4/ip_forward 33*cde5492fSlogin} 34*cde5492fSlogin 35*cde5492fSloginfunction add_filter_rules() 36*cde5492fSlogin{ 37*cde5492fSlogin iptables -t nat -A POSTROUTING -s "$NETWORK"/"$NETMASK" \ 38*cde5492fSlogin ! -d "$NETWORK"/"$NETMASK" -j MASQUERADE 39*cde5492fSlogin} 40*cde5492fSlogin 41*cde5492fSloginfunction start_dnsmasq() 42*cde5492fSlogin{ 43*cde5492fSlogin# 禁止重复运行dnsmasq 44*cde5492fSlogin ps -ef | grep "dnsmasq" | grep -v "grep" &> /dev/null 45*cde5492fSlogin if [ $? -eq 0 ]; then 46*cde5492fSlogin echo "dnsmasq 已经在运行" 47*cde5492fSlogin return 1 48*cde5492fSlogin fi 49*cde5492fSlogin dnsmasq \ 50*cde5492fSlogin --strict-order \ 51*cde5492fSlogin --except-interface=lo \ 52*cde5492fSlogin --interface=$BRIDGE \ 53*cde5492fSlogin --listen-address=$GATEWAY \ 54*cde5492fSlogin --bind-interfaces \ 55*cde5492fSlogin --dhcp-range=$DHCPRANGE \ 56*cde5492fSlogin --conf-file="" \ 57*cde5492fSlogin --pid-file=/var/run/qemu-dhcp-$BRIDGE.pid \ 58*cde5492fSlogin --dhcp-leasefile=/var/run/qemu-dhcp-$BRIDGE.leases \ 59*cde5492fSlogin --dhcp-no-override \ 60*cde5492fSlogin ${TFTPROOT:+"--enable-tftp"} \ 61*cde5492fSlogin ${TFTPROOT:+"--tftp-root=$TFTPROOT"} \ 62*cde5492fSlogin ${BOOTP:+"--dhcp-boot=$BOOTP"} 63*cde5492fSlogin} 64*cde5492fSlogin 65*cde5492fSloginfunction setup_bridge_nat() 66*cde5492fSlogin{ 67*cde5492fSlogin check_bridge "$BRIDGE" 68*cde5492fSlogin if [ $? -eq 0 ]; then 69*cde5492fSlogin create_bridge 70*cde5492fSlogin fi 71*cde5492fSlogin enable_ip_forward 72*cde5492fSlogin add_filter_rules "$BRIDGE" 73*cde5492fSlogin start_dnsmasq "$BRIDGE" 74*cde5492fSlogin} 75*cde5492fSlogin 76*cde5492fSlogin# 安装前需要检查$1参数 77*cde5492fSloginif [ -n "$1" ]; then 78*cde5492fSlogin setup_bridge_nat 79*cde5492fSlogin brctl addif "$BRIDGE" "$1" 80*cde5492fSlogin ifconfig "$1" 0.0.0.0 up 81*cde5492fSlogin exit 0 82*cde5492fSloginelse 83*cde5492fSlogin echo "发现错误：没有指定接口" 84*cde5492fSlogin exit 1 85*cde5492fSloginfi 86