CentOS8网络配置
CentOS8网络配置
CentOS8已无法正常使用network服务。
[root@localhost ~]# systemctl status network
Unit network.service could not be found.
[root@localhost ~]#
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一、CentOS8配置网络三种方法
1、配置ifcfg文件，使用nmcli来生效新的网络配置
[root@localhost ~]# cat /etc/sysconfig/network-scripts/ifcfg-ens33
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=none
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
NAME=ens33
UUID=4a0c3fda-c0c4-4b84-af1f-257817c3592e
DEVICE=ens33
ONBOOT=no
IPADDR=192.168.10.20
PREFIX=24
GATEWAY=192.168.10.1
[root@localhost ~]#
[root@localhost ~]# nmcli c reload
[root@localhost ~]# nmcli c up nes33
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4`Last login: Wed May 11 17:18:37 2022 from 192.168.20.1
node status: OK
See nodectl check for more information
Admin Console: https://192.168.20.100:9090/
[root@node ~]# yum install network-scripts
Failed to set locale, defaulting to C.UTF-8
CentOS-8-stream - Ceph Pacific 290 kB/s | 405 kB 00:01
oVirt Node Optional packages from CentOS Stream 2.7 MB/s | 22 MB 00:08
oVirt Node Optional packages from CentOS Stream 868 kB/s | 22 MB 00:25
Latest oVirt 4.4 Release 9.4 kB/s | 2.7 MB 04:58
Extra Packages for Enterprise Linux 8 - x86_64 3.8 MB/s | 11 MB 00:02
CentOS-8-stream - Gluster 8 49 kB/s | 42 kB 00:00
virtio-win builds roughly matching what will be 55 kB/s | 153 kB 00:02
Copr repo for EL8_collection owned by sbonazzo 104 kB/s | 246 kB 00:02
Copr repo for gluster-ansible owned by sac 4.1 kB/s | 7.3 kB 00:01
CentOS-8 - Advanced Virtualization 161 kB/s | 207 kB 00:01
CentOS-8 - oVirt 4.4 944 kB/s | 1.2 MB 00:01
CentOS-8 - OpsTools - collectd 61 kB/s | 41 kB 00:00
CentOS-8 - OpsTools - collectd - vault 83 kB/s | 149 kB 00:01
CentOS-8 - NFV OpenvSwitch 126 kB/s | 133 kB 00:01
CentOS-8 - OpenStack victoria 748 kB/s | 3.2 MB 00:04
All matches were filtered out by exclude filtering for argument: network-scripts
Error: Unable to find a match: network-scripts
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2、使用nmcli管理网络
添加IP
nmcli connection modity ens33 ipv4.address 192.168.10.20
添加掩码
nmcli connection modity ens33 ipv4.address 192.168.10.20/24
添加网关
nmcli connection modity ens33 ipv4.gateway 192.168.10.1
设置IP获取方式为手动/自动
nmcli connection modity ens33 ipv4.method manual
添加DNS
nmcli connection modity ipv4.dns 114.114.114.114
查看网卡信息
nmcli connection
显示具体的网络接口信息
nmcli connection ens33
显示所有活动连接
nmcli connection show --active
删除一个网卡
nmcli connection delete ens33
删除DNS
nmcli connection modity ens33 -ipv4.dns 114.114.114.114
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3、安装network服务
可通过yum install network-scripts来安装传统的network服务。
二、CentOS8修改网卡名称
1、删除网卡
[root@localhost ~]# nmcli connection delete ens33
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2、修改内核参数配置文件
[root@localhost ~]# cp /etc/default/grub /etc/default/grub.bak
[root@localhost ~]# sed -i ‘s/rhgb/net.ifnames=0 &/’ /etc/default/grub
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3、植入内核
[root@localhost ~]# grub2-mkconfig -o /boot/grub2/grub.cfg
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4、修改网卡命名规则
不修改命名规则device名称无法生效
[root@localhost ~]# echo ‘ACTION==“add”, SUBSYSTEM==“net”, DRIVERS==“?*”, ATTR{address}==“00:0c:29:15:f5:64”, NAME=“eth0”’ >>/usr/lib/udev/rules.d/60-net.rules
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5、重启
[root@localhost ~]# reboot
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6、修改网卡
[root@localhost ~]# nmcli connection modity eth0 ipv4.address 192.168.10.20/24 ipv4.gateway 192.168.10.1 ipv4.method manual
[root@localhost ~]# nmcli c reload
[root@localhost ~]# nmcli c up eth0
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原文链接：https://blog.csdn.net/qq_41112887/article/details/121490732