centos stream 9 配置网卡文件

admin · 发表于 2025-2-13 13:00:01

1、Centos stream 9 网络介结

Centos以前版本，NetworkManage以ifcfg格式存储网络配置文件在/etc/sysconfig/networkscripts/目录中。但是，Centos steam 9现已弃用ifcfg格式，默认情况下，NetworkManage不再创建此格式的新配置文件。从Centos steam 9开始采用密钥文件格式（基于INI文件），NetworkManager网卡配置在/etc/NetworkManager/system-connections目录中。这种格式基于INI文件，可以很容易地解析和生成。NetworkManager密钥文件中的每个部分都对应于一个nm-settings(5) 和nm-settings-keyfile(5)。如果您仍然使用ifcfg格式的网络配置文件，请考虑迁移，将它们转换为keyfile格式。要一次移植所有配置文件，请输入：nmcli connection migrate，此命令将所有配置文件从ifcfg格式迁移到keyfile格式化并存储在/etc/NetworkManager/system connections/中。或者，要仅移植特定的配置文件，请输入： nmcli connection migrate <profile_name|UUID|D-Bus_path>有关详细信息，请参阅：

* nm-settings-keyfile(5)

* nmcli(1)

2、通过网络配置文件设置IP

[root@10 system-connections]# pwd
/etc/NetworkManager/system-connections

[root@10 system-connections]# ls
ens160.nmconnection ens192.nmconnection ens224.nmconnection ens256.nmconnection

[root@10 system-connections]# vim ens160.nmconnection

[connection]
id=ens160
uuid=d8c7b37e-5eef-3bea-8893-a05f88ade99f ###正常情况可以不管，如果是虚机，建议删除或者注释掉。
type=ethernet
autoconnect-priority=-999
interface-name=ens160
timestamp=1739449260

[ethernet]

[ipv4]
#method=auto
method=manual
address1=192.168.8.195/24,192.168.8.1
dns=202.106.0.20;114.114.114.114;
dns-search=
#route1=0.0.0.0/0,192.168.8.1,0 ##configure router gateway 配置路由网关

[ipv6]
addr-gen-mode=eui64
method=auto
dns-search=

[proxy]

[root@bogon ~]# nmcli c reload
[root@bogon ~]#
[root@bogon ~]#
[root@bogon ~]#
[root@bogon ~]# nmcli c up ens160
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/7)
[root@bogon ~]#

添加反向路由：

echo "net.ipv4.conf.ens160.rp_filter = 0
net.ipv4.conf.ens224.rp_filter = 0
net.ipv4.conf.ens192.rp_filter = 0
net.ipv4.conf.ens256.rp_filter = 0">>/etc/sysctl.conf

执行
sysctl -p

上面的步骤为解决因路由问题导致网络不通的问题，解决步骤如下：
[root@bogon ~]# ping -I ens160 www.baidu.com
PING www.a.shifen.com (110.242.69.21) from 192.168.8.195 ens160: 56(84) bytes of data.

^C
--- www.a.shifen.com ping statistics ---
66 packets transmitted, 0 received, 100% packet loss, time 66598ms

[root@bogon ~]# echo "net.ipv4.conf.ens160.rp_filter = 0

net.ipv4.conf.ens224.rp_filter = 0">>/etc/sysctl.conf
[root@bogon ~]# echo "net.ipv4.conf.ens160.rp_filter = 0

net.ipv4.conf.ens224.rp_filter = 0">>/etc/sysctl.conf^C
[root@bogon ~]# vim /etc/sysctl.conf
[root@bogon ~]# echo "net.ipv4.conf.ens160.rp_filter = 0
net.ipv4.conf.ens224.rp_filter = 0
net.ipv4.conf.ens192.rp_filter = 0
net.ipv4.conf.ens256.rp_filter = 0">>/etc/sysctl.conf
[root@bogon ~]# sysctl -p
net.ipv4.conf.ens160.rp_filter = 0
net.ipv4.conf.ens224.rp_filter = 0
net.ipv4.conf.ens192.rp_filter = 0
net.ipv4.conf.ens256.rp_filter = 0
[root@bogon ~]# ping -I ens160 www.baidu.com
PING www.a.shifen.com (110.242.70.57) from 192.168.8.195 ens160: 56(84) bytes of data.
64 bytes from 110.242.70.57 (110.242.70.57): icmp_seq=1 ttl=53 time=11.1 ms
64 bytes from 110.242.70.57 (110.242.70.57): icmp_seq=2 ttl=53 time=11.1 ms
64 bytes from 110.242.70.57 (110.242.70.57): icmp_seq=3 ttl=53 time=10.7 ms
^C
--- www.a.shifen.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2004ms
rtt min/avg/max/mdev = 10.737/10.973/11.109/0.167 ms

[root@bogon ~]# nmcli connection reload

[root@bogon ~]# nmcli connection down ens3

[root@bogon ~]# nmcli connection up ens3

admin · 发表于 2025-2-13 13:09:34

使用nmcli 配置网卡：
nmcli con mod ens33 ipv4.addresses 192.168.1.100/24
nmcli con mod ens33 ipv4.gateway 192.168.1.1
nmcli con mod ens33 ipv4.method manual
nmcli con mod ens33 ipv4.dns "8.8.8.8,8.8.4.4"
nmcli con up ens33

admin · 发表于 2025-2-13 13:11:04

[root@bogon ~]# nmcli d
DEVICE  TYPE    STATE                CONNECTION
ens256  ethernet  connected             ens256
ens160  ethernet  connected             ens160
ens192  ethernet  connected             ens192
ens224  ethernet  connected             ens224
lo    loopback  connected (externally)  lo

admin · 发表于 2025-2-13 13:32:04

vim ens192.nmconnectio
[connection]
id=ens192
#uuid=c6451e02-0fd4-3bff-9857-cbc73b2badb7
type=ethernet
autoconnect-priority=-999
interface-name=ens192
timestamp=1739449260

[ethernet]

[ipv4]
#method=auto
method=manual
address1=162.96.90.195/24,162.96.90.2
dns-search=

[ipv6]
addr-gen-mode=eui64
method=auto

[proxy]

[root@bogon system-connections]# vim ens192.nmconnection
[root@bogon system-connections]# nmcli c r
[root@bogon system-connections]#
[root@bogon system-connections]# nmcli c d ens192
Connection 'ens192' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/8)
[root@bogon system-connections]# nmcli c up ens192
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/9)
[root@bogon system-connections]#

3: ens192: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 00:0c:29:90:af:35 brd ff:ff:ff:ff:ff:ff
altname enp11s0
inet 162.96.90.195/24 brd 162.96.90.255 scope global noprefixroute ens192
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fe90:af35/64 scope link noprefi

admin · 发表于 2025-2-13 13:40:22

[root@bogon system-connections]# cat ens256.nmconnection
[connection]
id=ens256
#uuid=c3817da4-88c4-37d0-9964-eebea0550881
type=ethernet
autoconnect-priority=-999
interface-name=ens256
timestamp=1739449260

[ethernet]

[ipv4]
#method=auto
method=manual
address1=192.168.13.195/24,192.168.13.2
dns=202.106.0.20;114.114.114.114；
dns-search=
[ipv6]
addr-gen-mode=eui64
method=auto

[proxy]
[root@bogon system-connections]# nmcli c d ens256
Connection 'ens256' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/5)
[root@bogon system-connections]# nmcli c u ens256
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/11)
[root@bogon system-connections]#

[root@bogon system-connections]# nmcli c r

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