技术教程

利用PVE给独立服务器自动获取ip开通NAT IPV4+DHCP IPV6+独立ipv4

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2022-02-11

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02/11

前言：

我们一般需要在独立服务器安装虚拟化比如我本人推荐使用proxmox(PVE)开源的，在PVE日常使用中如果有多ip分配的话，手动其实算是一个很大的工作量。本文白话记录v4与v6的获取，实现一次设置终身解放。

准备工作：

来到ovh或者sys的后台ip所在页面，生成对应的mac

配置网卡参数：

连接服务器SSH

打开并编辑/etc/network/interfaces

auto lo
iface lo inet loopback

iface eno3 inet manual

auto vmbr0
iface vmbr0 inet static
   address 服务器ip/24
   gateway 网关
   bridge-ports eno3
   bridge-stp off
   bridge-fd 0
iface vmbr0 inet6 static
     address 这里ipv6分配个/128
     gateway 网关这里来个::1

iface eno1 inet manual
iface eno2 inet manual
iface eno4 inet manual

auto vmbr1
iface vmbr1 inet static
     address 192.168.0.1/24
     bridge_ports none
     bridge_stp off
     bridge_fd 0
     bridge-vlan-aware yes
   bridge-vids 2-4094
     #转发ip4流量到小鸡使其可以连接外网
post-up echo 1 > /proc/sys/net/ipv4/ip_forward
post-up iptables -t nat -A POSTROUTING -s '192.168.0.1/24' -o vmbr0 -j MASQUERADE
post-down iptables -t nat -D POSTROUTING -s '192.168.0.1/24' -o vmbr0 -j MASQUERADE

iface vmbr1 inet6 static
     address 2001:xxxx:303:xxxx::3/64
up ip -6 route add 2001:xxxx:303:xxxx::/64 dev vmbr1
  post-down ip -6 route del 2001:xxxx:303:xxxx::/64 dev vmbr1
  
  
post-up iptables -t nat -A PREROUTING -i vmbr0 -p tcp --dport 222 -j DNAT --to 192.168.0.3:22
     post-down iptables -t nat -D PREROUTING -i vmbr0 -p tcp --dport 222 -j DNAT --to 192.168.0.3:22
     post-up iptables -t nat -A PREROUTING -i vmbr0 -p tcp --dport 80 -j DNAT --to 192.168.0.3:80
     post-down iptables -t nat -D PREROUTING -i vmbr0 -p tcp --dport 80 -j DNAT --to 192.168.0.3:80
     post-up iptables -t nat -A PREROUTING -i vmbr0 -p tcp --dport 443 -j DNAT --to 192.168.0.3:443
     post-down iptables -t nat -D PREROUTING -i vmbr0 -p tcp --dport 443 -j DNAT --to 192.168.0.3:443
     post-up iptables -t nat -A PREROUTING -i vmbr0 -p tcp --dport 8888 -j DNAT --to 192.168.0.3:8888
     post-down iptables -t nat -D PREROUTING -i vmbr0 -p tcp --dport 8888 -j DNAT --to 192.168.0.3:8888

打开etc/sysctl.conf编辑

net.ipv4.tcp_congestion_control=bbr
net.core.default_qdisc=fq
net.ipv4.conf.all.rp_filter=1
net.ipv4.icmp_echo_ignore_broadcasts=1
net.ipv4.conf.default.forwarding=1
net.ipv4.conf.default.proxy_arp = 0
net.ipv4.ip_forward=1
kernel.sysrq = 1
net.ipv4.conf.default.send_redirects = 1
net.ipv4.conf.all.send_redirects = 0
net.ipv4.ip_forward=1
net.ipv6.conf.all.accept_dad = 1
net.ipv6.conf.all.accept_ra = 0
net.ipv6.conf.all.accept_redirects = 1
net.ipv6.conf.all.accept_source_route = 0
net.ipv6.conf.all.autoconf = 0
net.ipv6.conf.all.disable_ipv6 = 0
net.ipv6.conf.all.forwarding=1

配置DHCP v4

安装DHCP

apt install isc-dhcp-server  # 安装hdcp
systemctl status isc-dhcp-server #启动查看状态
service isc-dhcp-server restart  #重启dhcp
systemctl enable isc-dhcp-server  #开机启动

找到并编辑/etc/default/isc-dhcp-server

INTERFACESv4="vmbr0"
#INTERFACESv6=""

找到并编辑/etc/dhcp/dhcpd.conf

subnet 0.0.0.0 netmask 0.0.0.0 {
authoritative;
default-lease-time 21600000;
max-lease-time 432000000;
}

# Bind IP by MAC
host VM1 {

# MAC Address
hardware ethernet x:x:x:x:x:x;

# Gateway
option routers x.x.x.x;

# Subnet
option subnet-mask 255.255.255.0;

# Failover IP
fixed-address x.x.x.x;

# DNS server
option domain-name-servers 8.8.8.8,8.8.4.4;

绑定以此类推vm1，vm2，vm3，。。。。。。

配置DHCP v6

安装radvd

apt install radvd   #安装
radvdservice radvd restart  #重启
radvdstatus radvd     #启动
radvdsystemctl enable radvd   #开机启动

找到并打开编辑 etc/radvd.conf

interface vmbr0 
{
        AdvSendAdvert on;
        MinRtrAdvInterval 30;
        MaxRtrAdvInterval 100;
        prefix xxxx:abc0:1234:79::/64 
        {
                AdvOnLink on;
                AdvAutonomous on;
                AdvRouterAddr on;
        };
};