在我尝试在 CentOS 8 上安装 wifi 卡并设置接入点 1.5 周后，我意外地发现该卡的驱动程序仅受最低内核 5.1 支持
所以我首先尝试安装新的内核，但无线网卡仍然没有成功。
最后，我切换到了 CentOS Stream 9（内核 5.15）。
如何创建接入点？
答案1
谷歌搜索后，我发现 NetworkManager-wifi 是一个需要安装的 nescary 软件包以及其他软件包。
这是设置接入点的简短教程，是一种快速且不脏的方法。从完成服务器的全新安装（没有 GUI、没有额外的软件包）到第一次与 iPad 和 Mac Air 成功建立 WiFi 连接，我整整花了 25 分钟。
我不会做很多努力，为每一步添加注释，如果你使用 CentOS，你就会知道这意味着什么:-) 大部分部分仅用于检查和监控实际点的状态，两个部分（NetworkManager.conf和dhcpd.conf）已准备好进行复制和粘贴以及细微的调整。
本教程在以下硬件上测试了两次：
- 技嘉迷你电脑 BRIX BACE-3000，8GB DDR3，120GB SSD，英特尔 wifi 6E ax210ngf 博锐
- 技嘉迷你电脑 BRIX BACE-3160，8GB DDR3，120GB SSD，英特尔 wifi 3160ngf
本教程基于以下操作方法，进行了细微的更改和调整：
为了没有 hostapd 的接入点（在德国）。为了dhcpd配置文件（英文，请跳过 hostapd 部分并向下滚动）
开始吧
sudo yum -y update
sudo yum -y install NetworkManager-wifi wpa_supplicant dhcp-server
[admin@ddpos-server ~]$ iw list | less
Supported interface modes:
* IBSS
* managed
* AP <--- IMPORTANT
* AP/VLAN
* monitor
* P2P-client
* P2P-GO
* P2P-device
[admin@ddpos-server ~]$ nmcli device status
DEVICE TYPE STATE CONNECTION
enp3s0 ethernet verbunden enp3s0
lo loopback nicht verwaltet --
wlp2s0 wifi nicht verwaltet --
[admin@ddpos-server ~]$ nmcli connection show
NAME UUID TYPE DEVICE
enp3s0 3c78a4d1-4497-3582-91cc-5de458039174 ethernet enp3s0
[admin@ddpos-server ~]$ nmcli device show wlp2s0
GENERAL.DEVICE: wlp2s0
GENERAL.TYPE: wifi
GENERAL.HWADDR: E4:02:9B:F0:84:35
GENERAL.MTU: 1500
GENERAL.STATE: 10 (nicht verwaltet)
GENERAL.CONNECTION: --
GENERAL.CON-PATH: --
IP4.GATEWAY: --
IP6.GATEWAY: --
[admin@ddpos-server ~]$ nmcli -f GENERAL device show wlp2s0
GENERAL.DEVICE: wlp2s0
GENERAL.TYPE: wifi
GENERAL.NM-TYPE: NMDeviceGeneric
GENERAL.DBUS-PATH: /org/freedesktop/NetworkManager/Devices/3
GENERAL.VENDOR: Intel Corporation
GENERAL.PRODUCT: Wireless 3160 (Dual Band Wireless AC 3160)
GENERAL.DRIVER: iwlwifi
GENERAL.DRIVER-VERSION: 5.14.0-17.el9.x86_64
GENERAL.FIRMWARE-VERSION: 17.3216344376.0 3160-17.ucode
GENERAL.HWADDR: E4:02:9B:F0:84:35
GENERAL.MTU: 1500
GENERAL.STATE: 10 (nicht verwaltet)
GENERAL.REASON: 0 (Kein Grund angegeben)
GENERAL.IP4-CONNECTIVITY: 0 (unbekannt)
GENERAL.IP6-CONNECTIVITY: 0 (unbekannt)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:1c.1/0000:02:00.0/ne>
GENERAL.PATH: pci-0000:02:00.0
GENERAL.IP-IFACE: wlp2s0
GENERAL.IS-SOFTWARE: nein
GENERAL.NM-MANAGED: nein
GENERAL.AUTOCONNECT: ja
GENERAL.FIRMWARE-MISSING: nein
GENERAL.NM-PLUGIN-MISSING: ja
GENERAL.PHYS-PORT-ID: --
GENERAL.CONNECTION: --
GENERAL.CON-UUID: --
GENERAL.CON-PATH: --
GENERAL.METERED: unbekannt
编辑网络管理器配置：sudo nano /etc/NetworkManager/NetworkManager.conf并复制并粘贴：
[device]
wifi.scan-rand-mac-address=no
# Fehlermeldung "CTRL-EVENT-SCAN-FAILED ret=-95 retry=1" beheben
# match-device=driver:iwlwifi # <-- UNCOMMENT "# match-dev..." IF NECESSARY
[ifupdown]
managed=false
[main]
plugins=ifupdown,keyfile
然后重新启动网络管理器：
sudo systemctl restart NetworkManager
[admin@ddpos-server ~]$ sudo systemctl status NetworkManager
● NetworkManager.service - Network Manager
Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled; vendor preset:>
Active: active (running) since Fri 2021-12-03 15:31:57 CET; 11s ago
Docs: man:NetworkManager(8)
Main PID: 41085 (NetworkManager)
Tasks: 4 (limit: 47936)
Memory: 3.1M
CPU: 214ms
CGroup: /system.slice/NetworkManager.service
└─41085 /usr/sbin/NetworkManager --no-daemon
Dez 03 15:31:57 ddpos-server-3160.ddpos NetworkManager[41085]: <info> [1638541917.8406] man>
Dez 03 15:31:57 ddpos-server-3160.ddpos NetworkManager[41085]: <info> [1638541917.8494] dev>
Dez 03 15:31:57 ddpos-server-3160.ddpos NetworkManager[41085]: <info> [1638541917.8497] Wi->
Dez 03 15:31:57 ddpos-server-3160.ddpos NetworkManager[41085]: <info> [1638541917.8504] man>
Dez 03 15:31:57 ddpos-server-3160.ddpos NetworkManager[41085]: <info> [1638541917.8516] dev>
Dez 03 15:31:57 ddpos-server-3160.ddpos NetworkManager[41085]: <info> [1638541917.8532] dev>
Dez 03 15:31:57 ddpos-server-3160.ddpos NetworkManager[41085]: <info> [1638541917.8590] dev>
Dez 03 15:31:57 ddpos-server-3160.ddpos NetworkManager[41085]: <info> [1638541917.9982] dhc>
Dez 03 15:31:58 ddpos-server-3160.ddpos NetworkManager[41085]: <info> [1638541918.0068] dhc>
Dez 03 15:32:01 ddpos-server-3160.ddpos NetworkManager[41085]: <info> [1638541921.2296] man>
sudo systemctl restart wpa_supplicant
[admin@ddpos-server ~]$ sudo nmcli connection show
NAME UUID TYPE DEVICE
enp3s0 3c78a4d1-4497-3582-91cc-5de458039174 ethernet enp3s0
这并不是真正需要的，但它提供了您正在做的事情的视觉反馈：
sudo nmtui
[admin@ddpos-server ~]$ nmcli device wifi list
IN-USE BSSID SSID MODE CHAN RATE SIGNAL BARS SECURITY
34:81:C4:0C:F1:7E FRITZ!Box 7490 Infra 11 195 Mbit/s 69 ▂▄▆_ WPA2
34:81:C4:0C:F1:80 FRITZ!Box 7490 Infra 44 405 Mbit/s 55 ▂▄__ WPA2
74:DA:88:F2:7C:33 WLAN-DW2CFD940 Infra 10 540 Mbit/s 32 ▂▄__ WPA2
在以下部分中替换ifname wlp2s0为您的部分，并根据您的选择更改MyHotspot/ MyNewSSID/ 。MyNewPassword
sudo nmcli device wifi hotspot ifname wlp2s0 con-name MyHotspot ssid MyNewSSID band bg channel 3 password 'MyNewPassword'
这里出现一条错误消息，我忽略了它，因为此时安装尚未完成。
Fehler: Aktivierung der Verbindung ist gescheitert: (5) IP-Konfiguration konnte nicht reserviert werden (keine verfügbare Adresse, Zeitüberschreitung usw.).
sudo nmcli connection modify MyHotspot ipv4.method manual ipv4.addresses 192.168.99.1/24 ipv4.gateway 192.168.99.1
sudo nmcli connection modify myHotspot connection.autoconnect yes
sudo nmcli connection up MyHotspot
sudo nmcli connection show --active
[admin@ddpos-server ~]$ iw wlp2s0 info
Interface wlp2s0
ifindex 3
wdev 0x1
addr e4:02:9b:f0:84:35
ssid ddpos
type AP
wiphy 0
channel 3 (2422 MHz), width: 20 MHz, center1: 2422 MHz
txpower 22.00 dBm
multicast TXQ:
qsz-byt qsz-pkt flows drops marks overlmt hashcol tx-bytes tx-packets
0 0 0 0 0 0 0 0 0
使用 编辑 dhcpd 设置sudo nano /etc/dhcp/dhcpd.conf，复制并粘贴，然后根据您的需要更改子网 99：
default-lease-time 600;
max-lease-time 7200;
authoritative;
subnet 192.168.99.0 netmask 255.255.255.0 {
range dynamic-bootp 192.168.99.200 192.168.99.220;
option broadcast-address 192.168.99.255;
option domain-name-servers 8.8.8.8, 8.8.4.4, 4.2.2.4;
option routers 192.168.99.1;
}
sudo systemctl daemon-reload
sudo systemctl enable dhcpd.service
sudo systemctl restart dhcpd.service
[admin@ddpos-server ~]$ sudo systemctl status dhcpd.service
● dhcpd.service - DHCPv4 Server Daemon
Loaded: loaded (/usr/lib/systemd/system/dhcpd.service; enabled; vendor preset: disabled)
Active: active (running) since Fri 2021-12-03 15:45:56 CET; 10s ago
Docs: man:dhcpd(8)
man:dhcpd.conf(5)
Main PID: 41327 (dhcpd)
Status: "Dispatching packets..."
Tasks: 1 (limit: 47936)
Memory: 5.2M
CPU: 33ms
CGroup: /system.slice/dhcpd.service
└─41327 /usr/sbin/dhcpd -f -cf /etc/dhcp/dhcpd.conf -user dhcpd -group dhcpd --no-pid
Dez 03 15:45:56 ddpos-server-3160.ddpos dhcpd[41327]:
Dez 03 15:45:56 ddpos-server-3160.ddpos dhcpd[41327]: No subnet declaration for enp3s0 (192.168.178.29).
Dez 03 15:45:56 ddpos-server-3160.ddpos dhcpd[41327]: ** Ignoring requests on enp3s0. If this is not what
Dez 03 15:45:56 ddpos-server-3160.ddpos dhcpd[41327]: you want, please write a subnet declaration
Dez 03 15:45:56 ddpos-server-3160.ddpos dhcpd[41327]: in your dhcpd.conf file for the network segment
Dez 03 15:45:56 ddpos-server-3160.ddpos dhcpd[41327]: to which interface enp3s0 is attached. **
Dez 03 15:45:56 ddpos-server-3160.ddpos dhcpd[41327]:
Dez 03 15:45:56 ddpos-server-3160.ddpos dhcpd[41327]: Sending on Socket/fallback/fallback-net
Dez 03 15:45:56 ddpos-server-3160.ddpos dhcpd[41327]: Server starting service.
Dez 03 15:45:56 ddpos-server-3160.ddpos systemd[1]: Started DHCPv4 Server Daemon.
sudo firewall-cmd --zone=public --add-service=dns --permanent
sudo firewall-cmd --zone=public --add-masquerade --permanent
sudo firewall-cmd --zone=public --add-port=80/tcp --permanent
sudo firewall-cmd --zone=public --add-port=443/tcp --permanent
sudo reboot
您应该已准备好使用新的接入点。希望这可以帮助某人。