InCommon Operations Notifications

[Tom Scavo <>]

This information is being provided FYI only. NO ACTION IS REQUIRED on the 
part of site administrators or technical contacts.

On July 19, 2012 @ 2:00pm, InCommon Operations will modify the server 
infrastructure on wayf.incommonfederation.org. (Recall that the Discovery 
Service and InCommon metadata are served from wayf.incommonfederation.org.) 
Specifically, we will remove Tomcat and use straight Apache.

We've analyzed and compared the HTTP responses from the two servers. The 
server responses are similar but there are two differences in the HTTP 
response headers as noted below. The fact that Apache responds with a Server 
response header shouldn't be a problem at all. The differences in the ETag 
response headers are more significant. Note that Tomcat issues a weak ETag 
header (http://en.wikipedia.org/wiki/HTTP_ETag) while Apache does not. We 
don't think this will be a problem but we wanted to bring it to your 
attention anyway. After July 19, please monitor your metadata refresh 
processes to make sure there are no ill effects. If you detect a problem, 
notify 

 immediately.

Thanks,

Tom Scavo
Operations Manager
InCommon.org
https://twitter.com/trscavo

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Tomcat:

HTTP/1.1 200 OK
Date: Wed, 20 Jun 2012 20:31:56 GMT
Accept-Ranges: bytes
ETag: W/"5077727-1340218724000"
Last-Modified: Wed, 20 Jun 2012 18:58:44 GMT
Content-Type: application/xml
Content-Length: 5077727
Connection: close


Apache:

HTTP/1.1 200 OK
Date: Wed, 20 Jun 2012 21:30:22 GMT
Server: Apache
Last-Modified: Wed, 20 Jun 2012 18:58:44 GMT
ETag: "f0808-4d7adf-4c2ebfcf72100"
Accept-Ranges: bytes
Content-Length: 5077727
Connection: close
Content-Type: application/xml