echo "server 0.de.pool.ntp.org iburst" >> /etc/chrony/chrony.conf
echo "server 1.de.pool.ntp.org iburst" >> /etc/chrony/chrony.conf
echo "server 2.de.pool.ntp.org iburst" >> /etc/chrony/chrony.conf
echo "server 3.de.pool.ntp.org iburst" >> /etc/chrony/chrony.conf
systemctl restart chronyd
journalctl --since -1h -u chrony