2004 Jan 12 4:00 PM
Web Server Changes
We've made the switch to our new web server. The new server is
configured to work pretty much like the old one, with the major
exception being that users can no longer log onto the server
directly. Changes made in your personal web space
(~/public_html) will take effect immediately; changes
to the ``core'' web space (/home/www) will not take
effect until that material is synced with the live website.
Until I get a handle on how frequently automated updates need to
happen, please notify me (or the webmaster alias) when
you make a change that requires the core site to be updated.
CGI Problems
We are experiencing some problems with CGI scripts pointing to
nonexistent binaries (e.g., /usr/local/bin/perl) and
compiled programs that do not work on the new server.
I've created a link for perl, but the compiled
programs can only be fixed by being recompiled. Please contact me
with the location of the source so that I can rebuild these
programs.
DNS Changes
Along with the web server switchover and the retirement of
naomi, we have made some changes to the
shell.math.hmc.edu alias. Now, instead of pointing to
naomi, shell points, round-robin, at the
machines in the lab. Thus connecting to shell will
give you one machine; a second connection might give you a second
machine; a third connection a third machine; and so on. (Depending
on your OS's caching policy.)
A nasty side effect is that you may see the WARNING:
REMOTE HOST IDENTIFICATION HAS CHANGED! warnings from
ssh on each attempted connection. This issue can be
solved by including the keys for all the machines
shell points to in your
~/.ssh/known_hosts file. Details on the fix, as well
as the file you'll need, are available on our security
page.
The ssh fingerprint information on that page has
also been updated.