Ideally superseded by revinet/issues#7
sudo nano /etc/ssh/sshd_config
and modify...
# PermitRootLogin yes
PermitRootLogin no
Go to https://app.datadoghq.com/account/settings#agent and follow the instruction.
Uninstall standard NTP, install chrony
and set...
server time1.google.com iburst
server time2.google.com iburst
server time3.google.com iburst
server time4.google.com iburst