[Arm-dev] Re: Re: System time

[Robert Moskowitz]

Oh, I should have read further down the page of: 
https://wiki.archlinux.org/index.php/Systemd-timesyncd

....

On 09/01/2015 01:38 PM, Robert Moskowitz wrote:
> Again, this requires the network to be up?
>
> I use timedatectl to set my timezone, will look more into it. Could be 
> all is rolled together...
>
> On 09/01/2015 01:35 PM, Nicolas Repentin wrote:
>>
>> Don't know.. I saw this on the web
>>
>>
>> Centos 7 use systemd. I suggest you use it.
>>
>> Use the command timedatectl 
>> <http://www.freedesktop.org/software/systemd/man/timedatectl.html>
>>
>> Enable network time synchronization:
>>
>> timedatectl set-ntp True
>>
>>
>>
>>
>> Create a conf file:
>>
>> vi /etc/systemd/timesyncd.conf
>>
>>
>>
>>
>> with content like this:
>>
>> [Time]
>>
>> NTP= yourserver.org
>>
>>
>>
>>
>> Start systemd-timedated service:
>>
>> systemctl start systemd-timedated
>>
>>
>>
>>
>>
>>
>> Nicolas Repentin
>>
>> <nicolas at shivaserv.fr>
>>
>> --------- Original Message ---------
>> *From*: Robert Moskowitz
>> *To*: Conversations around CentOS on ARM hardware
>> *Date*: Tue Sep 01 19:26:49 GMT+02:00 2015
>> *Subject*: Re: [Arm-dev] Re: System time
>>
>>
>> On 09/01/2015 01:15 PM, Nicolas Repentin wrote:
>>>
>>>
>>> Oh, I did know about systemd-timesyncd, need to check about it :-)
>>>
>>
>> Can't find it in the repo, what provides it?
>>
>>
>>>
>>>
>>>
>>> Nicolas Repentin
>>>
>>> <nicolas at shivaserv.fr>
>>>
>>> --------- Original Message ---------
>>> *From*: Robert Moskowitz
>>> *To*: Conversations around CentOS on ARM hardware
>>> *Date*: Tue Sep 01 19:04:38 GMT+02:00 2015
>>> *Subject*: Re: [Arm-dev] System time
>>>
>>>
>>> On 09/01/2015 12:16 PM, Nicolas wrote:
>>>> Hello
>>>>
>>>> I don't think any armv7 board like cubie has a battery to backup clock
>>>> I think ntpd is the only way, and seems to work well on my bpi with 
>>>> c7. I will check if dns resolution works when date is 1970.
>>>>
>>>> I think setting the currenttime can be a good idea on the rbf tool :-)
>>>
>>> On the Fedora-arm list I was pointed to Systemd-timesyncd
>>>
>>> This does MOST of what I want.  All that I think needs to be added 
>>> is for it to be enabled in the image and a initial date/time of the 
>>> image built date be there so the firstboot has a decent time.
>>>
>>>>
>>>> Nicolas Repentin
>>>> <nicolas at shivaserv.fr>
>>>>
>>>>
>>>> Le 1 septembre 2015 18:12, Robert Moskowitz a écrit:
>>>>> How is system time set at boot? Is ntpdate run after the network is
>>>>> ready?  How long does it retry waiting for the network to be 
>>>>> available?
>>>>>
>>>>> I have seen a number of challenges becuase the system time is back at
>>>>> the epoch start as there is no battery rtc.  And  I wonder how many
>>>>> armv7 boards have a battery to maintain time across boots?
>>>>>
>>>>> Minimally, a process could right the time, in the proper format, to a
>>>>> file, say /etc/currenttime every 5 min and at shutdown.
>>>>>
>>>>> Then date can be run early in the boot process, piping this file 
>>>>> in.  It
>>>>> would not be perfect and does not help, much for new installs, but
>>>>> better than epoch start.
>>>>>
>>>>> Plus /etc/currenttime can be at least set to the image build 
>>>>> date/time
>>>>> so not even firstboot will be at epoch start.
>>>>>
>>>>> Opinions?
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Arm-dev mailing list
>>>>> Arm-dev at centos.org
>>>>> https://lists.centos.org/mailman/listinfo/arm-dev
>>>>
>>>>
>>>> _______________________________________________
>>>> Arm-dev mailing list
>>>> Arm-dev at centos.org
>>>> https://lists.centos.org/mailman/listinfo/arm-dev
>>>
>>> _______________________________________________
>>> Arm-dev mailing list
>>> Arm-dev at centos.org
>>> https://lists.centos.org/mailman/listinfo/arm-dev
>>>
>>>
>>> _______________________________________________
>>> Arm-dev mailing list
>>> Arm-dev at centos.org
>>> https://lists.centos.org/mailman/listinfo/arm-dev
>>
>> _______________________________________________
>> Arm-dev mailing list
>> Arm-dev at centos.org
>> https://lists.centos.org/mailman/listinfo/arm-dev
>>
>>
>> _______________________________________________
>> Arm-dev mailing list
>> Arm-dev at centos.org
>> https://lists.centos.org/mailman/listinfo/arm-dev
>
>
>
> _______________________________________________
> Arm-dev mailing list
> Arm-dev at centos.org
> https://lists.centos.org/mailman/listinfo/arm-dev

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.centos.org/pipermail/arm-dev/attachments/20150901/e58d26e7/attachment.html>