CentOS8.3 Ubuntu20.04添加静态路由
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2022-07-14 19:58:19
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添加临时静态网络路由(两种方法)：
a. route add -net 172.16.0.0 netmask 255.255.0.0 gw 172.16.5.1
b. ip route add 172.16.0.0/16 via 172.16.5.1 dev ens192
删除临时静态路由（两种方法）：
a. route del -net 172.16.0.0 netmask 255.255.0.0
b. ip route del 172.16.0.0/16
添加永久静态路由：
Ubuntu20.04:
- 用route -n 检查路由表
[email protected]:/etc/netplan# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.155.255.1 0.0.0.0 UG 100 0 0 ens160
0.0.0.0 172.18.105.1 0.0.0.0 UG 101 0 0 ens192
10.155.255.0 0.0.0.0 255.255.255.0 U 100 0 0 ens160
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 ens160
172.18.105.0 0.0.0.0 255.255.255.0 U 101 0 0 ens192
- 进入目录**/etc/netplan/**
[email protected]:~# cd /etc/netplan/
[email protected]:/etc/netplan# ls
00-installer-config.yaml
[email protected]:/etc/netplan#vi 00-installer-config.yaml
- 编辑yaml文件
在需要的接口（例如ens192）上添加 routes信息，注意对齐
# This is the network config written by 'subiquity'
network:
ethernets:
ens160:
dhcp4: false
addresses: [10.155.255.108/24]
optional: true
gateway4: 10.155.255.1
nameservers:
addresses: [8.8.8.8]
ens192:
dhcp4: false
addresses: [172.18.105.108/24]
optional: true
gateway4: 172.18.105.1
nameservers:
addresses: [8.8.8.8]
routes:
- to: 172.18.0.0/16
via: 172.18.105.1
version: 2
renderer: NetworkManager
- 让netplan生效
[email protected]:/etc/netplan# netplan apply
[email protected]:/etc/netplan#
- 重新查看路由表，查看172.8.0.0/16路由信息
[email protected]:/etc/netplan# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.155.255.1 0.0.0.0 UG 100 0 0 ens160
0.0.0.0 172.18.105.1 0.0.0.0 UG 101 0 0 ens192
10.155.255.0 0.0.0.0 255.255.255.0 U 100 0 0 ens160
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 ens160
172.18.0.0 172.18.105.1 255.255.0.0 UG 101 0 0 ens192
172.18.105.0 0.0.0.0 255.255.255.0 U 101 0 0 ens192
[email protected]:/etc/netplan#
CentOS8
- 用ip route show | column -t查看路由表
[[email protected] network-scripts]# ip route show | column -t
default via 10.155.255.1 dev ens192 proto static metric 102
default via 172.18.105.1 dev ens224 proto static metric 103
10.155.255.0/24 dev ens192 proto kernel scope link src 10.155.255.109 metric 102
10.155.255.0/24 via 10.155.255.1 dev ens192 proto static metric 102
172.18.105.0/24 dev ens224 proto kernel scope link src 172.18.105.109 metric 103
192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1 linkdown
[[email protected] network-scripts]#
- 进入**/etc/sysconfig/network-scripts/**目录
[[email protected] ~]# cd /etc/sysconfig/network-scripts/
[[email protected] network-scripts]# ls
ifcfg-ens192 ifcfg-ens224 route-ens192 route-ens224
[[email protected] network-scripts]# vi route-ens224
- 选择要添加路由的网卡路由文件（例如route-ens224）添加如下路由信息，然后保存退出
ADDRESS0=172.18.0.0
NETMASK0=255.255.0.0
GATEWAY0=172.18.105.1
- 断开及重联interface
[[email protected] network-scripts]# nmcli device disconnect ens224 && nmcli device connect ens224
Device 'ens224' successfully disconnected.
Device 'ens224' successfully activated with '864417a3-87de-4bf0-a731-fb7f9bfae086'.
[[email protected] network-scripts]#
- 重新查看路由表，查看172.18.0.0/16路由信息
[[email protected] network-scripts]# ip route show | column -t
default via 10.155.255.1 dev ens192 proto static metric 102
default via 172.18.105.1 dev ens224 proto static metric 103
10.155.255.0/24 dev ens192 proto kernel scope link src 10.155.255.109 metric 102
10.155.255.0/24 via 10.155.255.1 dev ens192 proto static metric 102
172.18.0.0/16 via 172.18.105.1 dev ens224 proto static metric 103
172.18.105.0/24 dev ens224 proto kernel scope link src 172.18.105.109 metric 103
192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1 linkdown
[[email protected] network-scripts]#