Re: [gentoo-user] re: which NTPd package to use?

["Stefan G. Weichinger" <lists@xunil.at>]

Am 28.07.2014 18:47, schrieb Rich Freeman:

> Anybody have a decent comparison of timedated vs ntpd or anything else
> for that matter?
> 
> Running ntpd isn't hard at all, so I'm not really sure why I'd want to
> switch.  At the very least I'd want to ensure that the replacement
> covers the basics.
> 
> I am running networkd and I'm very happy with it.  Setting it up for
> dhcp-only is brain-dead simple, and I have it serving up a bridge for
> containers/kvm with fairly little trouble as well.


AFAI understand it the systemd-timedated.service helps setting clock and
time-related settings ... and if you use it to enable NTP syncing,
systemd-timesyncd.service will actually take over the part of syncing
with ntp servers.

I also preferred chrony over ntp for the last year or so. Better with
laptops etc. and quicker to correct time when there is large offset.

What I haven't yet fully understood:

daemons like chrony bring a specific settings file for
systemd-environments, in this case:

/usr/lib/systemd/ntp-units.d/50-chrony.list (saying "chronyd.service")

In the same directory I see 90-systemd.list (saying
"systemd-timesyncd.service").

As far as I understand this:

if other ntp-software is installed, systemd-timedated.service uses the
ntp-unit with higher priority (in my current case chronyd.service) for
ntp-syncing.

So you may use the systemd-timedated.service to do your settings and in
the same setup let it use another ntp-daemon to actually do the syncing
behind the curtains.

Generalized interface with choice --- nice, isn't it?

;-)

but maybe I misunderstand.

Stefan