[CentOS] What besides Postfix should not start until system time set?

Fri Apr 21 13:25:12 UTC 2017
Denniston, Todd A CIV NAVSURFWARCENDIV Crane, JXVS <todd.denniston at navy.mil>

________________________________________
From: Robert Moskowitz [rgm at htt-consult.com]
Sent: Thursday, April 20, 2017 5:00 PM
To: CentOS mailing list
Subject: [CentOS] What besides Postfix should not start until system time       set?
> 
> So I have learned that Postfix should delay until Chronyd has moved the
> system time from 0 to current.

Something you might consider to make the time delta _less_ drastic, is to create a service which on system shutdown touches a file {in /etc/} and on boot early in the start-up {make some other services depend on it} checks to see if the system date&time is before the time on that file, if it is then use the time stamp {+ a few sec} on the file to set the current time.  That way time would at least move forward.

in the olden days we used to use `hwclock --badyear` mitigate part of it. perhaps you could extend hwclock for --dead-batteries and make it easier for every one  with an arm {assuming hwclock is still used in the boot process to pull the initial time from the clock}. :)

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