- 2) Try it out. Play around with 'systemd --test --system' for
- a test run of systemd without booting. This will read the unit
- files and print the initial transaction it would execute
- during boot-up. This will also inform you about ordering loops
- and suchlike.
+ 2) Try it out. Play around (as an ordinary user) with
+ '/usr/lib/systemd/systemd --test --system' for a test run
+ of systemd without booting. This will read the unit files and
+ print the initial transaction it would execute during boot-up.
+ This will also inform you about ordering loops and suchlike
+
+NTP POOL:
+
+ By default, timesyncd uses the Google NTP servers
+ time[1-4].google.com. They serve time that is not standards
+ compliant, and can be up to .5s off. Google does not
+ officially support these servers for the broader
+ audience. Distributions and vendors really should not ship
+ OSes or devices with these NTP servers configured. Instead,
+ please register your own vendor pool at ntp.org and make it
+ the built-in default by passing --with-ntp-servers= to
+ configure. Registering vendor pools is free:
+
+ http://www.pool.ntp.org/en/vendors.html
+
+ Again, if you ship your software or device with the default
+ NTP servers, then you will get served wrong time, and will
+ rely on services that might not be supported for long.