ntpdate

[Andrew Pollock]

On Thu, Sep 23, 2004 at 05:04:49PM -0700, Matt Zimmerman wrote:
> On Fri, Sep 24, 2004 at 12:25:00AM +0100, Mark Shuttleworth wrote:
>
> > I like the idea of an ntp.ubuntulinux.org CNAME that we manage and can
> > point somewhere. time.nist.gov is the one I usually use. We won't have
> > that many users that they will scream during Warty.
>
> NTP servers generally have an access policy; often it requests that you
> notify them if you intend to do something like that.
>
> time.nist.gov is a stratum-1 server that specifically requests that its use
> be limited to stratum-2 servers except by arrangement with the admin.
>
> http://www.eecis.udel.edu/~mills/ntp/servers.html
>
> US CO time.nist.gov (192.43.244.18)
> Location: National Center for Atmospheric Research, Boulder, Colorado
> Geographic Coordinates: 39:58:43.44N 254:43:32.5E +1840m (WGS 84)
> Synchronization: ACTS dial-up with NTP backup, DEC Alpha UNIX Service Area:
> NSFnet, WESTnet
> Access Policy: open to stratum-2 servers and others by arrangement
> Contact: Judah Levine (jlevine@boulder.nist.gov), (303) 492-7785
>
> We could run a stratum-2 server of our own for Ubuntu users, but the
> admins have enough to do already.

I was about to say how hard would it be to sling a few GPSes around the
globe... I'm not sure of what resources are available.

regards

Andrew

--
linux.conf.au 2005 - http://lca2005.linux.org.au/ - Birthplace of Tux
April 18th to 23rd - http://lca2005.linux.org.au/ - LINUX
Canberra, Australia - http://lca2005.linux.org.au/ - Get bitten!
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[Mark Shuttleworth]

I like the idea of an ntp.ubuntulinux.org CNAME that we manage and can
point somewhere. time.nist.gov is the one I usually use. We won't have
that many users that they will scream during Warty.

Paul Sladen wrote:

>On Thu, 23 Sep 2004, Matt Zimmerman wrote:
>
>
>>Is there a reasonable public-access round-robin NTP service that would be
>>safe to point every Ubuntu user at, or should we just disable this for now?
>>
>>
>
>Perhaps you could add a CNAME for:
>
> ntppool.ubuntulinux.org
>
>then this can be safely repointed if anything breaks. ...there's always:
>
> time.windows.com
>
>which some kind Redmond-based company provides as a public service. (Not
>round-robin though but probably fairly reliable-ish).
>
>Personally I use `ntp{0,1}.linx.net' for strata-0 updates and
>`ntp2{a,b,c}.mcc.ac.uk' for general use; both GB-centric.
>
> -Paul
>
>

--
Ubuntu! Building a Desktop OS for the 21st century. www.ubuntulinux.org
http://www.markshuttleworth.com/

[Matt Zimmerman]

On Fri, Sep 24, 2004 at 12:25:00AM +0100, Mark Shuttleworth wrote:

> I like the idea of an ntp.ubuntulinux.org CNAME that we manage and can
> point somewhere. time.nist.gov is the one I usually use. We won't have
> that many users that they will scream during Warty.

NTP servers generally have an access policy; often it requests that you
notify them if you intend to do something like that.

time.nist.gov is a stratum-1 server that specifically requests that its use
be limited to stratum-2 servers except by arrangement with the admin.

http://www.eecis.udel.edu/~mills/ntp/servers.html

US CO time.nist.gov (192.43.244.18)
Location: National Center for Atmospheric Research, Boulder, Colorado
Geographic Coordinates: 39:58:43.44N 254:43:32.5E +1840m (WGS 84)
Synchronization: ACTS dial-up with NTP backup, DEC Alpha UNIX Service Area:
NSFnet, WESTnet
Access Policy: open to stratum-2 servers and others by arrangement
Contact: Judah Levine (jlevine@boulder.nist.gov), (303) 492-7785

We could run a stratum-2 server of our own for Ubuntu users, but the
admins have enough to do already.

--
- mdz

[Paul Sladen]

On Thu, 23 Sep 2004, Matt Zimmerman wrote:
> Is there a reasonable public-access round-robin NTP service that would be
> safe to point every Ubuntu user at, or should we just disable this for now?

Perhaps you could add a CNAME for:

ntppool.ubuntulinux.org

then this can be safely repointed if anything breaks. ...there's always:

time.windows.com

which some kind Redmond-based company provides as a public service. (Not
round-robin though but probably fairly reliable-ish).

Personally I use `ntp{0,1}.linx.net' for strata-0 updates and
`ntp2{a,b,c}.mcc.ac.uk' for general use; both GB-centric.

-Paul
--
Is there no safe way to travel? Nottingham, GB