RockyLinux 8 双网卡网络配置
现在有一台linux电脑做all in one server，两张网卡，一张万兆连接存储（无外网），一张千兆用于连接外网
现在的需求是 只有网络存储经过万兆 其余流量全部走 千兆网卡
配置如下
ifconfig命令输出如下
[root@localhost ~]# ifconfig
eno1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.3.9 netmask 255.255.255.0 broadcast 192.168.3.255
inet6 fe80::ec4:7aff:fe03:f46a prefixlen 64 scopeid 0x20<link>
ether 0c:c4:7a:03:f4:6a txqueuelen 1000 (Ethernet)
RX packets 506 bytes 40853 (39.8 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 875 bytes 109464 (106.8 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device memory 0xf7400000-f747ffff
eno2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
ether 88:88:88:88:87:88 txqueuelen 1000 (Ethernet)
RX packets 40 bytes 6607 (6.4 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 20 memory 0xf5100000-f5120000
enp6s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.10.10.10 netmask 255.255.255.255 broadcast 0.0.0.0
inet6 fe80::92e2:baff:fe8c:1e1a prefixlen 64 scopeid 0x20<link>
ether 90:e2:ba:8c:1e:1a txqueuelen 1000 (Ethernet)
RX packets 167 bytes 30001 (29.2 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 293 bytes 32510 (31.7 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eno1 和 eno2 是主板自带千兆
enp6s0是pcie万兆网卡
在 /etc/sysconfig/network-scripts 下找到各个网卡配置文件 配置如下
[root@localhost network-scripts]# cat ifcfg-eno1
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
IPADDR=192.168.3.9
GATEWAY=192.168.3.1
NETMASK=255.255.255.0
IPV4_FAILURE_FATAL=no
NAME=eno1
UUID=920b6ce5-4450-4a9b-b77f-06d4feb35112
DEVICE=eno1
ONBOOT=yes万兆网卡配置如下
[root@localhost network-scripts]# cat ifcfg-enp6s0
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
IPADDR=10.10.10.10
NETMASK=255.255.255.255
IPV4_FAILURE_FATAL=no
NAME=enp6s0
UUID=ad821f48-6f2a-4091-ba71-fffdd90ae5ec
DEVICE=enp6s0
ONBOOT=yes这两个卡都是静态分配的地址 只不过网段略有区别
除此之外还需要配置对应路由
#在网络配置下可以看到 网卡的路由配置文件
[root@localhost network-scripts]# ll
total 20
-rw-r--r-- 1 root root 223 Jul 17 01:31 ifcfg-eno1
-rw-r--r--. 1 root root 243 Jul 16 22:25 ifcfg-eno2
-rw-r--r-- 1 root root 209 Jul 17 02:14 ifcfg-enp6s0
-rw-r--r-- 1 root root 48 Jul 17 02:09 route-eno1
-rw-r--r-- 1 root root 26 Jul 17 12:46 route-enp6s0
#查看千兆网卡路由，配置的是一个默认路由，所有流量都走 192.168.3.1这个网关 eno1这个设备
[root@localhost network-scripts]# cat route-eno1
0.0.0.0 netmask 0.0.0.0 gw 192.168.3.1 dev eno1
#查看万兆网卡配置，发现配置的是一个特殊路由 只有10.10.10.2的流量走 enp6s0
[root@localhost network-scripts]# cat route-enp6s0
10.10.10.2/32 dev enp6s0
#看一下路由
[root@localhost network-scripts]# netstat -r
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
default _gateway 0.0.0.0 UG 0 0 0 eno1
10.10.10.2 0.0.0.0 255.255.255.255 UH 0 0 0 enp6s0
192.168.3.0 0.0.0.0 255.255.255.0 U 0 0 0 eno1
到这里就表示 所有流量都默认走eno1 也就是第一条路有，只有10.10.10.2走enp6s0，也就是万兆网卡