[EHPweb] notes with questions and action responses

[Culotta, Todd]

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<http://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
<blocked::http://www.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<mailto: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<http://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<http://www.usgs.gov>
2.  supername -- test-www.usgs.gov
>        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?
>        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<http://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
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