====== Debin Wi-Fi 網路介面設定 ======
因為設備有 wifi 網卡與 Ethernet 網卡, 安裝時只有自動抓到有線網卡, 現在想要啟動 wifi 網卡來使用
  * 設定環境 PVE 7.1 (debian_version : 11.2 Bullseye)
  * 預計連上 SSID : **ichiayi** WiFi AP

===== 設定程序 =====
  - 安裝相關網路工具套件 <code sh>apt install iw wireless-tools wpasupplicant</code>
  - 確認 wifi 網卡名稱 <code sh>
ls -lt /sys/class/net/| grep -v virtual</code>結果類似以下<cli>
root@nuc:~# ls -lt /sys/class/net/| grep -v virtual
total 0
lrwxrwxrwx 1 root root    0 Jan 23 13:06 wlp0s20f3 -> ../../devices/pci0000:00/0000:00:14.3/net/wlp0s20f3
-rw-r--r-- 1 root root 4096 Jan 23 13:06 bonding_masters
lrwxrwxrwx 1 root root    0 Jan 23 13:06 eno1 -> ../../devices/pci0000:00/0000:00:1f.6/net/eno1
</cli>所以 wifi 網卡名稱就是 **wlp0s20f3**
  - 用 WiFi AP 的 SSID/密碼 產生連上 psk<cli>
root@nuc:~# wpa_passphrase ichiayi **ichiayi_password**
network={
        ssid="ichiayi"
        #psk="**ichiayi_password**"
        psk=1dfdf**************************************************1087dcd52
}
</cli>
  - 建立 WPA 認證相關設定檔案<code sh>
mkdir -p /etc/wpa_supplicant
vi /etc/wpa_supplicant/wpa_supplicant.conf 
</code>內容類似如下:<file>
#
# File: wpa_supplicant.conf
#
ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=root
network={
        ssid="ichiayi"
        proto=WPA2
        key_mgmt=WPA-PSK
        psk=1dfdf**************************************************1087dcd52
}
</file>
  - 編輯 interfaces 網路介面設定<code sh>vi /etc/network/interfaces</code>內容類似以下<file>
:
auto wlp0s20f3
iface wlp0s20f3 inet dhcp
        pre-up wpa_supplicant -B -Dwext -iwlp0s20f3 -c/etc/wpa_supplicant/wpa_supplicant.conf
        post-down killall -q wpa_supplicant
:
</file>
  - 啟動 wpa_supplicant 服務<cli>
systemctl restart wpa_supplicant
</cli>
  - 重啟網路服務<cli>
systemctl restart networking.service
</cli>
  - 驗證是否正常連上 WiFi AP<cli>
wpa_cli -i wlp0s20f3 status
</cli>如果正確連上應該類似以下的訊息<cli>
root@nuc:~# wpa_cli -i wlp0s20f3 status
bssid=28:6c:07:68:fe:89
freq=0
ssid=ichiayi
id=0
mode=station
wifi_generation=5
pairwise_cipher=CCMP
group_cipher=TKIP
key_mgmt=WPA2-PSK
wpa_state=COMPLETED
ip_address=192.168.31.251
address=04:ea:56:87:58:34
uuid=14ea0bcc-c7f5-592c-ba49-159bbe31e49d
</cli>
  - 使用 ip addr show wlp0s20f3 就可看到目前的設定<cli>
root@nuc:~# ip addr show wlp0s20f3
3: wlp0s20f3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 04:ea:56:87:58:34 brd ff:ff:ff:ff:ff:ff
    inet 192.168.31.251/24 brd 192.168.31.255 scope global dynamic wlp0s20f3
       valid_lft 39290sec preferred_lft 39290sec
    inet6 fe80::6ea:56ff:fe87:5834/64 scope link 
       valid_lft forever preferred_lft forever
</cli>

<note>
  * 如果有修改 /etc/wpa_supplicant/wpa_supplicant.conf 需要執行 reconfig 來生效<cli>
root@nuc:~# wpa_cli -i wlp0s20f3 reconfig
OK
root@nuc:~# wpa_cli -i wlp0s20f3 status
bssid=62:a4:4c:67:26:74
freq=0
ssid=ichiayi_n56u_5G
id=0
:
</cli>
</note>

<WRAP center round alert 60%>
**針對在 PVE 環境將 WiFi 網卡加入 Bridge 並沒有設定成功**
  * 目前似乎是 **bridging does not work with WiFi** (主要是 VM 要使用 WiFi Bridge 的問題)
  * 找尋的相關資料如下: 
    * https://unix.stackexchange.com/questions/363332/how-do-i-configure-a-network-interface-bridge-from-wifi-to-ethernet-with-debian
    * https://pve.proxmox.com/wiki/WLAN
    * https://forum.proxmox.com/threads/wlan-doesnt-stay-in-bridge.49978/
    * https://blog.csdn.net/qq_19905867/article/details/114118476
    * https://www.reddit.com/r/Proxmox/comments/pttmr2/can_i_use_proxmox_with_only_wifi_broken_ethernet/
</WRAP>

===== 參考網址 =====
  * https://wiki.debian.org/NetworkConfiguration#Setting_up_an_Ethernet_Interface
  * https://wiki.debian.org/WiFi
  * http://www.linuxhomenetworking.com/wiki/index.php/Quick_HOWTO_:_Ch13_:_Linux_Wireless_Networking#.XxKqtygzZPY
  * https://codeleading.com/article/88945302379/

{{tag>pve network}}