DHCP Server

[yehlu]

https://university.tenten.co/t/topic/573

主機安裝 proxmox 默認沒DHCPD服務,需要自已安裝

1:添加NAT網橋
只有一個公網IP,想要虛擬機上網,就只能使用NAT模式.沒有使用WEB UI上的方案,直接編輯/etc/network/interface文件

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
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運行 service networking restart 使添加的網橋生效

2:安裝DHCP服務.
apt-get install isc-dhcp-server
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3:配置DHCP服務
修改文件:/etc/default/isc-dhcp-server,添加INTERFACES=“vmbr0”
修改文件:/etc/dhcp/dhcpd.conf

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;
}
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最後, service isc-dhcp-server restart