Invitation: Follow up meeting to ensure DNS and CDN migration to Level 3 is on track
07/20/2009 -
Chair:
Lorna A Schmid/GIO/USGS/DOI
Sent By:
lorna at usgs.gov
lorna
Lorna A Schmid has invited you to a meeting. You
have not yet responded.
Required:
Daniel O Winkless/GIO/USGS/DOI at USGS, David R
Boldt/WRD/USGS/DOI at USGS, EHPweb at geohazards.usgs.gov, Gregory
E Senko/WRD/USGS/DOI at USGS, GS Help DNS at USGS,
Libby.McClary at Level3.com, Mark.Brady at Level3.com,
Mark.Taylor2 at Level3.com, Ric.Poland at Level3.com, Scott R
Horvath/DO/USGS/DOI at USGS, Todd.Culotta at Level3.com
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
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