Re: [PLUG] ntp

[Walt Mankowski <waltman@pobox.com>]

But...but...

You do realize that's essentially what ntpd does, only ntpd does it
way better, right?

Right?

On Wed, Jul 08, 2015 at 01:37:59PM -0400, Keith C. Perry wrote:
> That's what I do. Run "ntpdate us.pool.ntp.org" every 4 to 6 hours on critical / core systems. 
> 
> 
> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 
> Keith C. Perry, MS E.E. 
> Owner, DAO Technologies LLC 
> (O) +1.215.525.4165 x2033 
> (M) +1.215.432.5167 
> www.daotechnologies.com 
> 
> 
> From: "Bill East" <wm.east@gmail.com> 
> To: "Philadelphia Linux User's Group Discussion List" <plug@lists.phillylinux.org> 
> Sent: Wednesday, July 8, 2015 1:35:29 PM 
> Subject: Re: [PLUG] ntp 
> 
> 
> 
> I just had to deal with a vendor installation which was about 4 seconds off the ntp server it was supposed to be synced with. Come to find out the vendor ran a ntpdate command once a day and the vm was drifting 4 seconds in the 24 hours between. Their solution was to run the command once an hour instead. 
> On Jul 8, 2015 1:13 PM, "Eric Riese" < eric.riese@gmail.com > wrote: 
> 
> 
> 
> So I just noticed that my KVM server's clocks were way off. The host OS was 4 minutes behind time.gov and the guests were 4 minutes ahead of time.gov . 
> 
> Turns out the host did not have ntp installed at all. It's Ubuntu 12.04 and was installed as some sort of minimal installation. A sudo apt-get install ntp and five minutes later it's in good shape. 
> 
> The guests are debian installs from turnkeylinux.org and they have ntp installed but were not running by default! 
> 
> To think, Google runs it's own internal NTP servers and had to spread the leap second out over a day, and I'm off by whole minutes! 
> 
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