Hmm... looks like chronyd was installed by default under SL7 (learn something new every day) rather than ntpd; systems seemed to still be synced and accurate to the second.  I swapped that out for ntpd. We'll see if that makes any difference, though I doubt it. The times seemed accurate to the second when I last looked at them. Looking at the web page for chrony, it sounds like it is at least a functional equivalent of ntp under Linux, if not superior in some respects.

http://chrony.tuxfamily.org/faq.html

No transparent proxies either, as per the network admins. Some web filtering done via Checkpoint firewalls, but that's it.

Thomas

-----Original Message-----
From: [log in to unmask] [mailto:[log in to unmask]] On Behalf Of Pat Riehecky
Sent: Wednesday, March 09, 2016 6:42 AM
To: Antonio Querubin; [log in to unmask]
Subject: Re: [SCIENTIFIC-LINUX-USERS] "Not using downloaded repomd.xml because it is older than what we have:"

On 03/09/2016 03:36 AM, Antonio Querubin wrote:
> On Wed, 9 Mar 2016, John Pilkington wrote:
>
>> But doesn't SL7 use chrony?
>
> We're talking servers (ie. always on systems) right? - where
> supposedly ntpd is the better choice.  I would think the mirrors are
> running ntpd instead of chronyd.
>
> But this discussion got me to rechecking again why ntpd wasn't
> starting up on some of my own servers and it turns out chronyd was
> still enabled on those.  Perhaps the repo servers have the same issue?
>
I've verified that the distribution servers have a stable ntpd running and remain synced with several on site stratum1 time sources.

Pat
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