Katlas installation notes

Okay... these are my notes while trying to setup the wiki on katlas.

Upgrading MySQL

For better or worse, I decided to upgrade MySQL to version 4.0 before doing anything else. I mostly followed these instructions.

Warning: do not install MySQL 4.1. It is incompatible with mediawiki. Install version 4.0.

For this I need three RPMs which are all available with only a little digging at mysql.com

• MySQL-shared-compat-4.0.25-0.i386.rpm
• MySQL-server-4.0.25-0.i386.rpm
• MySQL-client-4.0.25-0.i386.rpm

The first of these is required so we don't break dependencies while upgrading. Install it first, with

rpm -iv MySQL-shared-compat-4.0.25-0.i386.rpm

Then upgrade the other two packages

rpm -U MySQL-server-4.0.25-0.i386.rpm

rpm -U MySQL-client-4.0.25-0.i386.rpm

Note the warning the server install gives --

PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER !
To do so, start the server, then issue the following commands:
/usr/bin/mysqladmin -u root password 'new-password'
/usr/bin/mysqladmin -u root -h katlas.math.toronto.edu password 'new-password'
See the manual for more instructions.

(note however that you need to upgrade the client package before mysqladmin is available to do this!)

I also deleted the local anonymous account, and put a password on the remote anonymous account. (Ask User:Scott for these passwords.)

Apache

I had to fix the server name, from katlas to katlas.math.toronto.edu in httpd.conf

I added

AllowOverride FileInfo

in the httpd.conf file, in the section for /var/www/html, so I could use .htaccess files to rewrite the wiki URLs nicely.

MediaWiki

I added the namespace "Data", as per these instructions, adding

$wgExtraNamespaces =
       array(100 => "Data",
             101 => "Data talk");
$wgNamespacesWithSubpages =
       array( -1 => 0, 0 => 0, 1 => 1, 2 => 1, 3 => 1,
              4 => 0, 5 => 1, 6 => 0, 7 => 1,
              8 => 0, 9 => 1, 10 => 0,11 => 1,
              100 => 1, 101 => 1 );

to LocalSettings.php. (For some reason, the namespace "Knot Data" didn't seem to work?)

Enable <math></math> processing

First, I made the /images directory writable.

Next, I installed ocaml (download the sources, ./configure, make world, make bootstrap, make opt, make install). What a pain! After that, go to the math directory under the wiki installation, and run make.

Finally, edit LocalSettings.php to enable TeX.