Use Cloudflare NTP server on umbrelOS

cloudflare-ntp.sh

#!/bin/bash
# Ensure the script is run as root
if [ "$EUID" -ne 0 ]
  then echo "Please run as root"
  exit
fi

echo "Current date is: $(date -R)"

# Update packages 
echo "Updating repo..."
apt-get update -qq > /dev/null 2>&1

echo "Removing ntp..."
apt-get --yes -qq remove ntp > /dev/null 2>&1


# Install systemd-timesyncd
echo "Installing systemd-timesync..."
if ! apt-get --yes -qq install systemd-timesyncd > /dev/null 2>&1; then
    echo "Failed to install systemd-timesyncd, reinstalling ntp"
    apt-get --yes qq install ntp
    exit
fi

echo "Enabling timesyncd..."
timedatectl set-ntp true
systemctl enable --now systemd-timesyncd

# Configure systemd-timesyncd to use time.cloudflare.com
echo "Setting default NTP server..."

# Clean up existing NTP and FallbackNTP entries
sed -i '/^NTP/d' /etc/systemd/timesyncd.conf
sed -i '/^FallbackNTP/d' /etc/systemd/timesyncd.conf
sed -i '/^ConnectionRetrySec/d' /etc/systemd/timesyncd.conf
echo "NTP=time.cloudflare.com" >> /etc/systemd/timesyncd.conf
echo "FallbackNTP=time.google.com 0.debian.pool.ntp.org 1.debian.pool.ntp.org 2.debian.pool.ntp.org 3.debian.pool.ntp.org" >> /etc/systemd/timesyncd.conf
echo "ConnectionRetrySec=10" >> /etc/systemd/timesyncd.conf

# Restart timesyncd to apply changes
echo "Restarting timesyncd..."
systemctl restart systemd-timesyncd

# Reboot the system
# echo "Rebooting the system now..."
# reboot
echo "Date is: $(date -R)"
timedatectl status

echo "Connecting to the new NTP server..."
sleep 5s
echo "Date is: $(date -R)"
timedatectl timesync-status

echo "Refetching status..."
sleep 5s
echo "Date is: $(date -R)"
timedatectl timesync-status

echo "Successfully switched the NTP server."