阿里云 Ubuntu20.04 配置单机多公网IP访问外部服务

## reserved values#255 local
254 main
253 default
0 unspec
100100# 主网卡101101# eth1102102# eth2103103# eth3104104# eth4## local##1  inr.ruhep

network: {config: disabled}

# This file is generated from information provided by# the datasource.  Changes to it will not persist across an instance.# To disable cloud-init's network configuration capabilities, write a file# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:# network: {config: disabled}network:
    version: 2    ethernets:
        eth0:
            match:
                macaddress: 00:xx:xx:xx:xx:bc
            set-name: eth0
            addresses:
-172.16.6.81/18 # 私有IP/子网掩码            gateway4: 172.16.63.253 # 网关, 只有一个网卡需要配置gateway4参数            nameservers:
                addresses:
-8.8.8.8
-1.1.1.1
-8.8.4.4
-223.5.5.5 # 阿里云DNS-223.5.5.6 # 阿里云DNS            routes:
- to: 0.0.0.0/0 # 路由的目标地址。                  via: 172.16.63.253 # 为通过路由的流量设置源 IP 地址。（网关）                  table: 100# eth0对应的路由表            routing-policy:
- from: 172.16.6.81 # 主网卡私网ip，设置源 IP 地址以匹配此策略规则的流量。                  table: 100# 路由表编号                  priority: 300# 指定路由策略规则的优先级，以影响处理路由规则的顺序。# 数字越大，优先级越低：规则按优先级数字递增的顺序处理。        eth1:
            match:
                macaddress: 00:xx:xx:xx:xx:fa
            set-name: eth1
            addresses:
-172.16.0.1/18
            nameservers:
                addresses:
-8.8.8.8
-1.1.1.1
-8.8.4.4
-223.5.5.5
-223.5.5.6
            routes:
- to: 0.0.0.0/0 
                  via: 172.16.63.253 # 网关                  table: 101# eth1对应的路由表            routing-policy:
- from: 172.16.0.1 # eth1私网ip                  table: 101                  priority: 300        eth2:
            match:
                macaddress: 00:xx:xx:xx:xx:51
            set-name: eth2
            addresses:
-172.16.0.2/18
            nameservers:
                addresses:
-8.8.8.8
-1.1.1.1
-8.8.4.4
-223.5.5.5
-223.5.5.6
            routes:
- to: 0.0.0.0/0
                  via: 172.16.63.253
                  table: 102            routing-policy:
- from: 172.16.0.2
                  table: 102                  priority: 300        eth3:
            match:
                macaddress: 00:xx:xx:xx:xx:1f
            set-name: eth3
            addresses:
-172.16.0.3/18
            nameservers:
                addresses:
-8.8.8.8
-1.1.1.1
-8.8.4.4
-223.5.5.5
-223.5.5.6
            routes:
- to: 0.0.0.0/0
                  via: 172.16.63.253
                  table: 103            routing-policy:
- from: 172.16.0.3
                  table: 103                  priority: 300        eth4:
            match:
                macaddress: 00:xx:xx:xx:xx:a5
            set-name: eth4
            addresses:
-172.16.0.4/18
            nameservers:
                addresses:
-8.8.8.8
-1.1.1.1
-8.8.4.4
-223.5.5.5
-223.5.5.6
            routes:
- to: 0.0.0.0/0
                  via: 172.16.63.253
                  table: 104            routing-policy:
- from: 172.16.0.4
                  table: 104                  priority: 300