On Sat, Apr 25, 2020, 04:49 Michael Hirmke <mh(a)mike.franken.de> wrote:
On Fri, Apr 24, 2020, 09:27 Per Jessen
> Michael Hirmke wrote:
>> Hi *,
>> I tried to understand the relation between chrony, timedatectl, dhcp
>> and NetworkManager on my Tumbleweed notebook.
>> I regularily use a LAN connection, WiFi connections and LTE
>> connections. In every case the network information is fetched via
>> dhcp. Do I need chrony in this environment? Or is the systemd
>> timedatectl service sufficient?
> That depends on your requirements, how accurate do you need laptop time
> to be? chrony sounds like it would be fine for you.
>> If I need chrony, how does chrony get the ntp server address from
>> dhcp? I don't want to change it manually in chrony.conf.
> The dhcp infos are written to a file, for instance:
> contains lines of "variable=value". Somehow chromy grabs hold of that.
> Probably slightly different with NetworkManager.
I do not understand why would you want to change
ntp server depending on
whichever way you connect to a network. Unless you need local ntp on
and different one elsewhere.
Perhaps my wording was not correct - I connect to different networks
with my different interfaces.
That makes perfect sense that you need to follow local NTP.
I was under impression that this is ordinary standalone client/laptop.
I personally do not need better time precision than ~
1s to keep make happy
when using network storage - for that any
is good enough and
it works everywhere, including LTE.
If you'd use kerberos, you would also need a precise time!
Am I missing something?
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