migrate-to-nm.sh

#!/bin/bash

set -e

nm_files="dhcp-eth0.nmconnection dhcp-eth1.nmconnection fallback-link-local-eth0.nmconnection fallback-link-local-eth1.nmconnection 99-revpi.conf"
download_dir=$(mktemp -d)

echo -n "This script will change the network configuration from dhcpcd to NetworkManager. Do you want to proceed? [yN] "
read choice

if [ "$choice" != "y" ] && [ "$choice" != "Y" ]; then
        echo "Aborted. Configuration has not been changed."
        echo
        exit
fi

echo

echo -n ">> Downloading configuration files "
for file in $nm_files ; do
        url="https://raw.githubusercontent.com/RevolutionPi/imagebakery/master/templates/network-manager/$file"
        wget --quiet "$url" -O "$download_dir/$file"
        echo -n .
done
echo
echo

echo ">> Install NetworkManager package ..."
if ! $(dpkg -s network-manager >/dev/null 2>&1); then
        sudo apt update && sudo apt install -y network-manager
else
        echo "Package already installed. Nothing to do here."
fi
echo

echo ">> Configure system with raspi-config to use NetworkManager instead of dhcpcd ..."
sudo raspi-config nonint do_netconf 2
echo

echo ">> Copy RevPi specific configuration files for NetworkManager ..."
# Don't manage pileft / piright with NetworkManager
sudo install -o root -m 0644 "$download_dir/99-revpi.conf" "$IMAGEDIR/etc/NetworkManager/conf.d/99-revpi.conf"

# Use fallback to dhcp if no connection is configured
sudo install -o root -m 0600 "$download_dir/dhcp-eth0.nmconnection" "/etc/NetworkManager/system-connections"
sudo install -o root -m 0600 "$download_dir/dhcp-eth1.nmconnection" "/etc/NetworkManager/system-connections"

# Use fallback to link-local if dhcp fails
sudo install -o root -m 0600 "$download_dir/fallback-link-local-eth0.nmconnection" "/etc/NetworkManager/system-connections"
sudo install -o root -m 0600 "$download_dir/fallback-link-local-eth1.nmconnection" "/etc/NetworkManager/system-connections"

echo ">> Cleanup downloaded files and temp folder ..."