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From Robert Moskowitz <>
Subject Re: [users@httpd] Does Apache need to delay startup until system time set?
Date Thu, 20 Apr 2017 21:25:12 GMT

thanks.  I already learned about chrony-wait for postfix.  I will apply 
it to httpd as well; Roundcubemail will need it...

On 04/20/2017 05:07 PM, Yehuda Katz wrote:
> There are some parts of the HTTP conversation which could be affected 
> by having the wrong time, but HTTPD itself doesn't care.
> For example, if you are using cookies, caching, those could be 
> affected by the time change (even more specifically, for PHP sessions, 
> when the clock changes, the PHP session cleanup handler might think a 
> session is very old and remove it).
> If you want to wait for the time to be synchronized, I think you can 
> change the systemd unit to require chrony-wait.service 
> (
> - Y
> On Thu, Apr 20, 2017 at 4:57 PM, Robert Moskowitz < 
> <>> wrote:
>     This is for Centos7 on an armv7 SOC with no clock battery.
>     On startup, Centos runs Chronyd which eventually sets the system
>     clock.  This can happen really fast, or not depending.  I have
>     learned that it is NOT a good thing for postfix to start when the
>     system time is earlier than the build date of postfix.  There is a
>     way for me to delay postfix start until the time is set.
>     Does Apache also have this concern not to start until the time is
>     'fixed'?
>     thanks
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