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88 lines
2.7 KiB
Markdown
88 lines
2.7 KiB
Markdown
# Setting up Wi-Fi
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The following describes how to setup a Wi-Fi connection on the default pikvm builds based on Arch Linux.
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The process might vary for other Linux distros. We recommend to do this while having a display and keyboard
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connected directly to the Raspberry Pi as you will loose network connectivity once you connect to a Wi-Fi.
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Alternatively you can connect to the PiKVM via SSH. The built-in Web Terminal (available through the browser) should also work.
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!!! warning
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There is nothing more reliable than wired Ethernet, so it's better to use it. But who are we to stop you... :)
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!!! note "Moving Wi-Fi settings for OS older than 2021.10.19"
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Starting from 2021.10.19, the old way to configure Wi-Fi using `netctl` is deprecated.
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Instead, it is proposed to use a more native path with `systemd-networkd`, which is already used to configure Ethernet.
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Follow the guide and then delete the old netctl profile:
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```
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# rw
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# systemctl disable netctl-auto@wlan0.service
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# rm /etc/netctl/wlan0-*
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# ro
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```
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## Step by step
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1. Make filesystem writable using `rw` command.
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2. Create Wi-Fi settings file `/etc/systemd/network/wlan0.network` with following content:
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```ini
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[Match]
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Name=wlan0
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[Network]
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DHCP=yes
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DNSSEC=no
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# Use same IP by forcing to use MAC address for clientID
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[DHCP]
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ClientIdentifier=mac
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```
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3. Set network ESSID and password:
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```
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# wpa_passphrase MyNetwork "P@assw0rd" > /etc/wpa_supplicant/wpa_supplicant-wlan0.conf
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```
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!!! note "Using Wi-Fi with hidden ESSID"
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Add option `scan_ssid=1` to `/etc/wpa_supplicant/wpa_supplicant-wlan0.conf`
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!!! note "Using 5GHz Wi-Fi in the USA"
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Add option `country=US` to `/etc/wpa_supplicant/wpa_supplicant-wlan0.conf`
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4. Enable WPA-supplicant service:
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```
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systemctl enable wpa_supplicant@wlan0.service
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```
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5. Make filesystem read-only again using `ro` command
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## Useful console commands
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* `iwconfig` - Manipulate the basic wireless parameters.
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* `iwlist` - Allow's you to initiate scanning and list frequencies, bit-rates, encryption keys, etc.
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* `iwspy` - Displays per node link quality.
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* `iwpriv` - Allow's you to manipulate the Wireless Extensions specific to a driver (private).
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!!! example "Some examples"
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```
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# iw dev wlan0 scan | egrep "signal:|SSID:" | sed -e "s/\tsignal: //" -e "s/\tSSID: //" | awk '{ORS = (NR % 2 == 0)? "\n" : " "; print}' | sort
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```
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```
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# iwlist wlan0 scan | egrep "Cell|ESSID|Signal|Rates"
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```
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```
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# iwlist wlan0 scan
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```
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```
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# iw wlan0 info
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```
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## Additional resources
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* [Arch Linux Wiki for systemd-networkd](https://wiki.archlinux.org/title/systemd-networkd)
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