CentOS 7 网卡配置

Question

安装网络工具：

yum install iw
yum install wpa_supplicant
yum install net-tools
yum -y install pciutils*

查看无线网卡型号

# lspci

查看无线网接口

# iw dev
phy#0
	Interface wlp0s26u1u1
		ifindex 3
		wdev 0x1
		addr 0c:82:68:04:0d:33
		type managed

启用 wlp0s26u1u1 接口

ip link set dev wlp0s26u1u1 up

扫描 wifi 热点：

iw dev wlp0s26u1u1 scan | grep SSID

修改网络配置文件：
vim /etc/wpa_supplicant/wpa_supplicant.conf

ctrl_interface=/var/run/wpa_supplicant
#ctrl_interface_group=wheel
ap_scan=1
network={
    ssid="TP-LINK_7D49"
    scan_ssid=1
    key_mgmt=WPA-PSK
    psk="yyxz@20190901"
}

激活网络配置：

# wpa_supplicant -B -i wlp0s26u1u1 -c /etc/wpa_supplicant/wpa_supplicant.conf
Successfully initialized wpa_supplicant

开启 dhcp，用 dhcp 获得 IP

dhclient wlp0s26u1u1

查看 ip

ip addr show wlp0s26u1u1

可以看到网络配置：

# cat /etc/sysconfig/network-scripts/ifcfg-TP-LINK_7D49 
HWADDR=0C:82:68:04:0D:33
ESSID=TP-LINK_7D49
MODE=Managed
KEY_MGMT=WPA-PSK
MAC_ADDRESS_RANDOMIZATION=default
TYPE=Wireless
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=dhcp
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=TP-LINK_7D49
UUID=9708e46c-6b25-42fc-bac2-888db0528a7d
ONBOOT=yes
IPV6_PRIVACY=no

开机自启：

systemctl enable NetworkManager.service
#此句可能没用（开启 WiFi)
nmcli r wifi on

参考：

• centos7 设置连接无线 wifi：https://www.cnblogs.com/wayneliu007/p/10386351.html
• CentOS7 使用无线 WiFi 连接并设置为开机启动：https://blog.mrabit.com/details/25
• centos7 使用无线 wifi 连接：https://www.cnblogs.com/jpfss/p/7425830.html
• https://4xx.me/archives/336.html