[EHPweb] notes with questions and action responses
Lorna A Schmid
lorna at usgs.gov
Fri Jul 17 19:31:34 GMT 2009
earthquake.usgs.gov would be accessed by the customer and delivered from
Level 3 environment, but the source would be origin-earthquake.usgs.gov
which would be delivered to Level 3 from any of your N servers.
Jeremy -- If yes, you need to work with Larry to get the DNS names set up
...
Level 3 -- Please confirm.
This brings up the other point we were discussing yesterday, we need to be
able to lock down origin.www.usgs.gov from access to any external servers
except Level 3 (also let's make sure not to create new zones with the
naming we choose for these.)
thanks. Lorna
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Lorna Schmid
USGS/EWeb
Infrastructure and Operations Team Leader
lorna at usgs.gov
703.648.6834 (w)
703.946.0257 (c)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Happiness is when what you think,
what you say, and what you do
are in harmony.
-- M. Ghandi
From:
Jeremy M Fee <jmfee at usgs.gov>
To:
Lorna A Schmid <lorna at usgs.gov>
Cc:
Lisa A Wald <lisa at usgs.gov>, GS Level3 <gs_level3 at usgs.gov>
Date:
07/17/2009 02:48 PM
Subject:
Re: notes with questions and action responses
Hi Lorna,
> Can we CNAME origin-earthquake.usgs.gov to origin-
> earthquake.level3.magic-hostname.net
>
> which would wellness check across:
> ehp1-earthquake.cr.usgs.gov
> ehp2-earthquake.wr.usgs.gov
> ehp3-earthquake.gps.caltech.edu
> ehp4-earthquake.cr.usgs.gov
Perfect. This is what I was asking about in the call.
> which would all resolve to earthquake.usgs.gov
You mean all the ehpN-earthquake servers handle requests for
earthquake.usgs.gov and origin-earthquake.usgs.gov, right?
I think our origin lag problems with Akamai are because we use(d)
ehpwebback.cr.usgs.gov as our origin server name, which is a round-
robin DNS name instead of a wellness-checked DNS name.
Thanks,
Jeremy
> From: "Culotta, Todd" <Todd.Culotta at Level3.com>
>
> To: 'Lorna A Schmid' <lorna at usgs.gov>
>
> Cc: 'GS Level3' <gs_level3 at usgs.gov>
>
> Date: 07/17/2009 01:43 PM
>
> Subject: RE: notes with questions and action responses
>
>
>
>
>
>
> Hi Lorna,
>
> Any more information on this? We can be available for a quick call to
> discuss.
>
> Thanks,
>
>
> Todd Culotta
> Sales Engineer III
> Federal Markets
> Level 3 Communications
> 2300 Corporate Park Drive, Suite 600
> Herndon, VA 20171
> p: 703-234-8926
> m: 703-593-7673
> e: todd.culotta at level3.com
>
>
> From: Lorna A Schmid [mailto:lorna at usgs.gov]
> Sent: Thursday, July 16, 2009 5:49 PM
> To: Culotta, Todd
> Cc: 'GS Level3'
> Subject: RE: notes with questions and action responses
>
>
> I guess we need to figure this out quickly: origin-www.usgs.gov is
> a CNAME
> to an Akamai identity which then incorporates wellness checking
> against 9
> USGS NatWeb Web servers. I'm guessing we should be able to do
> something
> like this for the earthquake sites. We'll have to let Jeremy speak
> up on
> this.
>
> Lorna
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Lorna Schmid
> USGS/EWeb
> Infrastructure and Operations Team Leader
> lorna at usgs.gov
> 703.648.6834 (w)
> 703.946.0257 (c)
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Happiness is when what you think,
> what you say, and what you do
> are in harmony.
> -- M. Ghandi
>
>
>
>
>
> From: "Culotta, Todd" <Todd.Culotta at Level3.com>
>
> To: 'Lorna A Schmid' <lorna at usgs.gov>, 'GS Level3'
> <gs_level3 at usgs.gov>
>
> Date: 07/16/2009 04:50 PM
>
> Subject: RE: notes with questions and action responses
>
>
>
>
>
>
>
>
>
> Lorna,
>
> For the Origin Servers below, Each Supername can only cache fill
> from a
> single Origin hostname. It is not possible to fill from multiple
> hostnames has you have below.
>
> For example: www.usgs.gov the origin hostname is origin-
> www.usgs.gov this
> will work fine.
>
> The rest have multiple origin names, where as each supername can
> only have
> one origin hostname to fill from.
>
>
>
> Todd Culotta
> Sales Engineer III
> Federal Markets
> Level 3 Communications
> 2300 Corporate Park Drive, Suite 600
> Herndon, VA 20171
> p: 703-234-8926
> m: 703-593-7673
> e: todd.culotta at level3.com
>
>
>
>
> From: Lorna A Schmid [mailto:lorna at usgs.gov]
> Sent: Thursday, July 16, 2009 2:55 PM
> To: GS Level3
> Subject: notes with questions and action responses
>
>
>
>
> July 16 Meeting Notes
>
>
> USGS
> Jeremy Fee
> Lisa Wald
> Scott Horvath
> Dan Winkless
> Larry McIrvin
> Greg Senko
> David Boldt
> Lorna Schmid
>
> Level3
> Todd Culatta
> Mark Taylor ? Customer Project Manager
> Todd D?More -- Implementation Engineer
> Libby McClary
>
> Dan is updating the gs_level3 at usgs.gov
> working with Libby to make sure that the Level 3 folks are in our mail
> alias.
> Lisa Wald sent the Earthquake alias.
>
>
> ACTION: get hostnames and source servers
>
>
> CDN hostnames and
> origin servers:
>
> www.usgs.gov
> origin-www.usgs.gov
>
>
> earthquake.usgs.gov
> ehp1-earthquake.cr.usgs.gov
> ehp2-earthquake.wr.usgs.gov
> ehp3-earthquake.gps.caltech.edu
> ehp4-earthquake.cr.usgs.gov
>
> quake.usgs.gov
>
> ncweb-north.wr.usgs.gov
> ncweb-den.cr.usgs.gov
> ncweb-east.er.usgs.gov
>
> neic.usgs.gov
> neic.cr.usgs.gov
>
> For testing we need
> test-www.usgs.gov
> test-earthquake.usgs.gov
> test-quake.usgs.gov
> test-neic.usgs.gov
>
> To test the DNS split for Intranet and public users, we need to have
> another test CDN host
>
> level3.natweb.usgs.gov that points to
> level3-origin.natweb.usgs.gov
>
> In our internal DNS .usgs.gov users will go to
> level3-origin.natweb.usgs.gov and public DNS will go to the level 3
> CNAME
> (provided by Mark D?Amore @ Level 3).
>
> *****************
>
> Create a test hostname & content page for us to CNAME to Level 3.
>
> Gs help dns:
> 1. origin-www.usgs.gov is www.usgs.gov
> 2. supername -- test-www.usgs.gov
> Ø Need the alias name for Level 3
>
> CCD ? Customer Commit Date is now set to Monday
>
> Apache SSI ? compare incoming hostname to some text. Edge side
> include is
> what we?re looking for?
> Logic based programming available
>
> Can have two copies of the pages that have those internal links.
>
> Geoblocking or allowing content based on country code.
>
> Look at the referrer header
>
>
> Whole site caching vs. object caching
>
>
> Image.www.usgs.gov would house all the images that the pages needs
> to put
> the page together.
>
> USGS ACTION: Test
> Using DNS to have all ?usgs.gov? machines directed to origin-
> www.usgs.gov
> and public would go to www.usgs.gov
>
>
> Access to USGS networks by Level 3 wellness testing and caching
> systems
>
>
> Need to further discuss the requirement to have a known set of Level3
> servers allowed into the USGS network. Either ip subnets or a known
> number
> of servers.
>
>
> Content Freshness
>
>
> Default TTL is one year. They do honor cache control headers to
> manage the
> TTL.
> Purging content method?
> Ø Use the portal or an API cgi that you use.
>
> Are there query strings that generate unique per visitor parameters.
> Passing a session ID? If yes, there is a workaround to optimize the
> caching of that content.
>
>
> Portal Management
>
>
> 1 super user and then they will set up user accounts within USGS.
> Properties = EQ, www.usgs.gov, DNS
>
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Lorna Schmid
> USGS/EWeb
> Infrastructure and Operations Team Leader
> lorna at usgs.gov
> 703.648.6834 (w)
> 703.946.0257 (c)
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Happiness is when what you think,
> what you say, and what you do
> are in harmony.
> -- M. Ghandi
>
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://geohazards.usgs.gov/pipermail/ehpweb/attachments/20090717/836b167c/attachment-0001.html
More information about the EHPweb
mailing list