<p><p>Don't know.. I saw this on the web<br><br><br></p><p>Centos 7 use systemd. I suggest you use it.<br><br></p><p>Use the command <a href="http://www.freedesktop.org/software/systemd/man/timedatectl.html">timedatectl</a><br><br></p><p>Enable network time synchronization:<br><br></p><p>timedatectl set-ntp True<br></p><p><br><br></p><p><br></p><p>Create a conf file:<br><br></p><p>vi /etc/systemd/timesyncd.conf<br></p><p><br><br></p><p><br></p><p>with content like this:<br><br></p><p>[Time]<br><br></p><p>NTP= yourserver.org<br></p><p><br><br></p><p><br></p><p>Start systemd-timedated service:<br><br></p><p>systemctl start systemd-timedated<br></p><p><br><br></p><p><br><br><br></p><p>Nicolas Repentin<br></p><p><nicolas@shivaserv.fr><br><br></p><p></p></p><div class='dm__nested'><div class='dm__nested_header'>--------- Original Message ---------<br>
<b>From</b>: Robert Moskowitz <rgm@htt-consult.com><br>
<b>To</b>: Conversations around CentOS on ARM hardware <arm-dev@centos.org><br>
<b>Date</b>: Tue Sep 01 19:26:49 GMT+02:00 2015<br>
<b>Subject</b>: Re: [Arm-dev] Re: System time<br>
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<div class="moz-cite-prefix">On 09/01/2015 01:15 PM, Nicolas
Repentin wrote:<br>
</div>
<blockquote
cite="mid:625033636.2.1441127759342.JavaMail.nicolas@shivaserv.fr"
type="cite">
<p><br>
</p>
<p>Oh, I did know about systemd-timesyncd, need to check about it
:-)<br>
</p>
</blockquote>
<br>
Can't find it in the repo, what provides it?<br>
<br>
<br>
<blockquote
cite="mid:625033636.2.1441127759342.JavaMail.nicolas@shivaserv.fr"
type="cite">
<p><br>
<br>
<br>
</p>
<p>Nicolas Repentin<br>
</p>
<p><a class="moz-txt-link-rfc2396E" href="mailto:nicolas@shivaserv.fr"><nicolas@shivaserv.fr></a><br>
<br>
</p>
<div class="dm__nested">
<div class="dm__nested_header">--------- Original Message
---------<br>
<b>From</b>: Robert Moskowitz <rgm@htt-consult.com><br>
<b>To</b>: Conversations around CentOS on ARM hardware <arm-dev@centos.org><br>
<b>Date</b>: Tue Sep 01 19:04:38 GMT+02:00 2015<br>
<b>Subject</b>: Re: [Arm-dev] System time<br>
</arm-dev@centos.org></rgm@htt-consult.com></div>
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<div class="moz-cite-prefix">On 09/01/2015 12:16 PM, Nicolas
wrote:<br>
</div>
<blockquote cite="mid:42c5b20b.1441124088412@shiva.shivaserv.fr"
type="cite">Hello<br>
<br>
I don't think any armv7 board like cubie has a battery to
backup clock<br>
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.<br>
<br>
I think setting the currenttime can be a good idea on the rbf
tool :-)</blockquote>
<br>
On the Fedora-arm list I was pointed to Systemd-timesyncd<br>
<br>
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.<br>
<br>
<blockquote cite="mid:42c5b20b.1441124088412@shiva.shivaserv.fr"
type="cite">
<div class="profimail-signature"><br>
Nicolas Repentin<br>
<a moz-do-not-send="true" class="moz-txt-link-rfc2396E"
href="mailto:nicolas@shivaserv.fr"><nicolas@shivaserv.fr></a></div>
<br>
<br>
<div class="profimail-cite-prefix">Le 1 septembre 2015 18:12,
Robert Moskowitz a écrit:<br>
</div>
<blockquote type="cite">How is system time set at boot? Is
ntpdate run after the network is <br>
ready? How long does it retry waiting for the network to be
available?
<br>
<br>
I have seen a number of challenges becuase the system time
is back at <br>
the epoch start as there is no battery rtc. And I wonder
how many <br>
armv7 boards have a battery to maintain time across boots?
<br>
<br>
Minimally, a process could right the time, in the proper
format, to a <br>
file, say /etc/currenttime every 5 min and at shutdown.
<br>
<br>
Then date can be run early in the boot process, piping this
file in. It <br>
would not be perfect and does not help, much for new
installs, but <br>
better than epoch start.
<br>
<br>
Plus /etc/currenttime can be at least set to the image build
date/time <br>
so not even firstboot will be at epoch start.
<br>
<br>
Opinions?
<br>
<br>
<br>
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