Monday, 9 December 2013

Re: Ubuntu Server seeded package review

Chris Arges (cc:d) has looked into this before in-depth. But I don't
seem to have the email with his conclusions. Chris, could you summarize
here what you had found when you looked into our previous suggestion to
not enable ntp in guests?

Quoting Seth Arnold (
> On Thu, Dec 05, 2013 at 05:15:41PM -0600, C de-Avillez wrote:
> > Although I am probably hammering a rather cold iron, I still fail to
> > understand why ntp is not installed by default. I would expect precise
> > timekeeping to be something important on a server (instead of allowing
> > the time to drift slowly).
> I would like to hear from An Expert if ntpd, ntpdate, ptpd, etc., are
> reasonable things to install in virtual machine guest environments.
> My personal suspicion is that when a virtual machine host runs ntpd,
> guests should not run ntpd, since two daemons attempting to skew the
> clock sounds like a recipe for highly chaotic behavior. ntpdate would
> be alright since it does not attempt to manage clock skew. ptpd no idea.
> When the virtual machine host does not run ntpd, I suspect ntpd, ntpdate,
> ptpd, are all fine things to run in the guests.
> I'd love to know for certain what the best practices are. It might
> influence the default package installs.
> Thanks

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