Centos8安装完成后连接WI-FI

Centos8安装完成后连接WI-FI [ 技术杂谈 ]

九叶的小窝文章正文

九叶

{{nature("2021-06-16 17:40:16")}}更新

1. 问题描述

ummmmm 把系统玩炸了重装之后发现之前遇到的不能使用wifi问题还发生就记录一下

之前各种搜索各种论坛博客去逛发现都需要网络下载其他支持包而我当时就偏不信

我就觉得带界面的centos8默认可以连wifi凭什么无gui的就不可以我觉得肯定内置了相关的命令

后来我发现是我太年轻了当时折腾了两天都不行还是得需要有线网络的支持然后放弃了...

2. 解决方法

2.1 排查问题

输入 ifconfig -a 如下

[root@021129 ~]# ifconfig -a
eno1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.31.161  netmask 255.255.255.0  broadcast 192.168.31.255
        inet6 fe80::fe34:97ff:fe64:f8d5  prefixlen 64  scopeid 0x20<link>
        ether fc:34:97:64:f8:d5  txqueuelen 1000  (Ethernet)
        RX packets 741  bytes 82992 (81.0 KiB)
        RX errors 0  dropped 8  overruns 0  frame 0
        TX packets 925  bytes 218437 (213.3 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 16  memory 0x92300000-92320000  

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 0  bytes 0 (0.0 B)
        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

wlp4s0: flags=4098<BROADCAST,MULTICAST>  mtu 1500
        ether 70:9c:d1:ef:6b:2c  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        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

显示 wlp4s0 未启用

执行 nmcli d 后发现 wlp4s0 unmanged

[root@021129 ~]# nmcli d
DEVICE  TYPE      STATE      CONNECTION 
eno1    ethernet  connected  eno1   
lo      loopback  unmanaged  --   
wlp4s0  wifi      unmanaged  --

执行 ifup wlp4s0 后发现未输出任何信息

[root@021129 ~]# ifup wlp4s0
Error: unknown connection '/etc/sysconfig/network-scripts/ifcfg-wlp4s0'.

2.2 下载依赖

执行 yum install NetworkManager-wifi

Installed:

  NetworkManager-wifi-1:1.30.0-7.el8.x86_64  
  crda-3.18_2020.04.29-1.el8.noarch  
  iw-4.14-5.el8.x86_64  
  wpa_supplicant-1:2.9-5.el8.x86_64   

Complete!