In previous post i have described installation of Armbian on Orange Pi PC Plus. Now is the time for some initial configuration
(hostname and WIFI setup).

Table of Contents

Changing hostname

  1. Check current hostname with hostname
  2. Check current fully qualified domain name (or FQDN) with hostname --fqd
  3. Set new hostname: sudo hostname pi
  4. Update /etc/hostname for Debian to get new hostname after reboot
  5. Update /etc/hosts so that FQDN is before short localhost next to IP:

    127.0.0.1   pi.example.com pi localhost
    ::1 pi.example.com pi localhost ip6-localhost ip6-loopback
    fe00::0 ip6-localnet
    ff00::0 ip6-mcastprefix
    ff02::1 ip6-allnodes
    ff02::2 ip6-allrouters
  6. Reboot with sudo reboot

Configuring WIFI to work with WPA2

There are various ways for configuring WIFI with wpa_suplicant. You may consider settings things up in /etc/network/interfaces if you want WIFI
to be started automatically upon system startup. I have decided on another approach: using script for starting all manually.

  1. wpa_supplicant should be installed but needs to be run as root: sudo wpa_supplicant -v.`
  2. In the next steps you will need BSSID (access point MAC address) and channel. Turn on your WIFI card with sudo ifconfig wlan0 upand scan for
    your network with sudo iwlist wlan0 scan | egrep 'Address|ESSID|Channel'.
  3. Prepare configuration file for wpa_supplicant in /etc/wpa_supplicant folder. You could have more files there with different names. Our file
    will be named wifi.conf.
  4. Adjust the content of the file: replace 00:14:6C:AE:EA:AEmy-wifi and P@ssw0rd with
    your access point MAC address, your WIFI network name and your WIFI password respectively:

    ctrl_interface=DIR=/var/run/wpa_supplicant
    network={
    bssid=00:14:6C:AE:EA:AE
    ssid="my-wifi"
    scan_ssid=1
    key_mgmt=WPA-PSK
    psk="P@ssw0rd"
    }
  5. Create a script and add execute permissions. Replace my-wifi8 and wifi.conf with
    your WIFI name, channel and WPA supplicant configuration file name:

    #!/usr/bin/env bash
    DEV=$(iw dev | awk '/Interface/ {interf=$2} END {print interf}')
    DHCL_PIDFILE=/var/run/dhclient-$DEV.pid
    WPA_PIDFILE=/var/run/wpa_supplicant-$DEV.pid
    if [[ -f $DHCL_PIDFILE ]] && kill -9 $(cat $DHCL_PIDFILE)
    then
    dhclient -v -r $DEV
    echo "IP address released"
    fi
    if [[ -f $WPA_PIDFILE ]] && kill -9 $(cat $WPA_PIDFILE)
    then
    echo "WPA supplicant killed"
    fi
    killall wpa_supplicant
    echo "wpa_supplicant killed :)"
    ifconfig -v $DEV down
    sleep 1
    ifconfig -v $DEV up
    echo "$DEV interface is up again"
    iwconfig $DEV essid 'my-wifi' channel 8
    echo "starting wpa_supplicant.."
    sleep 2
    wpa_supplicant -B -dd -i$DEV -P$WPA_PIDFILE -c/etc/wpa_supplicant/wifi.conf
    sleep 2
    echo "getting IP address.."
    dhclient -v -pf $DHCL_PIDFILE $DEV
  6. Run the script as root

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