Web Server Upgrade
Warning: Your web pages may not work after October 31, 2011!
ITSS is upgrading our existing web server (www.d.umn.edu) to newer
hardware and software.This guide will help you prepare for the changes that
will happen on Monday, October 31, at 6AM. If your web sites
do not use CGI or data base systems it is very likely no changes will
need to be made to your web sites. If you do use CGI (PHP, Perl, C, C++, etc), then it's important
that you test and be prepared to update your web pages on the October
31 conversion day.
Here is some information about the new server:
- The new server is Debian based instead of Solaris based.
- The new server will run soon on our virtual system.
- The system has more memory, is much faster, and has redundant connections.
- The system has newer software than current web server(s):
- php = 5.3.3-7
- apache = 2.2.16
- mysql = 5.1.49-3
- The new www server is supporting some virtual web servers, and more will be added.
- Access to the data is available on both old and new servers, check out the webpage below.
How much work might it be to convert to the new server?
One way to check to see if CGI has been found with your name on it
- Your web site should be OK if there is no use of CGI or data base systems.
- Your web site should be OK if Perl was used for CGI or data base access.
- If you use PHP4 note that we are moving to PHP5.
- A basic set of conversion items for the PHP4->5 conversion is here: http://us3.php.net/manual/en/tutorial.oldcode.php
- If compiled languages like Pascal, C, C++, or Java are used, your CGI related code will need to be recompiled.
- If other languages or scripts are used they might be OK. Testing is outlined below.
staff were able to match up user names that own the web pages with
files that contain CGI scripting. Clicking below (List your files that
contain CGI references) will bring you to a list of user names. There are
three categories to review. If your name pops up in the list you can
then click on your name and you will see a list of pages of CGI
directives that belong to you:List of your files that contain CGI references
How to test your pages:
It is easy to test the first page of a web site. Instead of using the current web site:http://www.d.umn.edu/itss
use the temporary name for the new one:http://n-www.d.umn.edu/itss/
the CGI portion of your web site is utilized within the first page of
your web site works you may not need to change anything. If
it does not work then you should take a look at the web logs.Web log information.
are a set of logs that you can view that might shed light on what is not working correctly. A server called
"bulldog" has been created and an account has been opened for you.
Usually access is done from your system using something like ssh. Here are some basic instructions on how to access the logs:
[a] Login to bulldog.d.umn.edu
[b] cd /usr/local/apache/log
Apache logs are synched every minute. The current logs (basically
for today and the past couple days) have read permissions for all. Older
logs are compressed by a log manager on web2 and are not readable
without permission and decompression.
Log files available for use:
access.log - contains connects to URL
error.log - contains errors
other_vhosts_access.log - access log for virtual systems
The error log info for virtual hosts can be found in error.log .
a reminder, logs may contain potentially sensitive information. Please
use this information carefully and do not share information with others.What if you have issues and need help?
is a list of support people broken down by major unit. Support staff
have already been warned about the web service conversion on
Monday, October 31. Watch for future announcements regarding
corrections for this upcoming conversion.
CEHSP: Lynn Hegrenes
COPD: Daniel Filipiak
CS: Jim Luttinen
CLA: Peter Angelos
SCSE: Terry Guggenbuehl
LSBE: Rick Brill
MED: Brad Ingersoll
NRRI: Greg Grunwald, Chris Heim
SFA: Arden WeaverLimited ITSS Staff Help Available
can contact our Help Desk and they will open up a ticket for staff who
will then contact you for details. Help from our staff will be billed at our usual rate (see
).Request for a test run ahead of the October 31, 2011 deadline
faculty/staff have asked whether we can do a test web conversion ahead
of the October 31 deadline. After additional ITSS staff discussions we
are still inclined to say "no test". Here are some reasons why:
ITSS web server has more than our main web server on it, web1.d hosts
many other "virtual" web servers. These servers would be affected
twice, both when moving to a test system and also moving back to the
- There are DNS (name service) issues, as DNS
servers have differing cache lag times. Customers might see the new
test server or fail attempting to see the base one.
- Web pages using data storage devices might have conversion issues after returning to the base system.
- ITSS recommends focusing on the October 31 conversion rather than possible web, DNS or data base related issues.
Everyone can do some testing (first pages for sure) at:
Please feel free to contact me with questions about this major upgrade to the new system and new features.
Rev: 1.20 djb 09/30/2011