[EHPweb] notes with questions and action responses

[Jeremy M Fee]

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
>
>
>
>