添加NAT网桥
只有一个公网IP,想要虚拟机上网,就只能使用NAT模式.没有使用WEB UI上的方案,直接编辑/etc/network/interface文件
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auto vmbr0 iface vmbr0 inet static address 192.168.100.1 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 echo 1 > /proc/sys/net/ipv4/conf/vmbr0/proxy_arp post-up iptables -t nat -A POSTROUTING -s '192.168.100.0/24' -o enp2s0 -j MASQUERADE post-down iptables -t nat -D POSTROUTING -s '192.168.100.0/24' -o enp2s0 -j MASQUERADE |
注:enp2s0为有公网IP的网卡
编辑完成后运行service networking restart生效
安装DHCP服务.
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apt-get install isc-dhcp-server |
修改文件:/etc/default/isc-dhcp-server,添加INTERFACES="vmbr0"
修改文件:/etc/dhcp/dhcpd.conf
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ddns-update-style none; default-lease-time 600; max-lease-time 7200; #ping true; option domain-name-servers 172.27.15.2, 10.72.81.2; option domain-name "cloud.isfate.com"; authorative; log-facility local7; subnet 192.168.100.0 netmask 255.255.255.0 { range 192.168.100.5 192.168.100.230; option subnet-mask 255.255.255.0; option domain-name-servers 8.8.8.8, 8.8.4.4; option domain-name "cloud.isfate.com"; option routers 192.168.100.1; option netbios-name-servers 192.168.100.1; option netbios-node-type 8; get-lease-hostnames true; use-host-decl-names true; default-lease-time 600; max-lease-time 7200; interface vmbr0; } |
然后
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service isc-dhcp-server restart |
收工
查看IP分配情况
查看文件/var/lib/dhcp/dhcpd.leases