These are merely my notes on installing Gallery2 as multisite. You probably aren't interested.
Had to remove the gallery2 dir under /var/www/html to reinstall.
Made gallery2 database and g2data directory.
Creating three site-directories under /var/www: photos.1000words.dk (for photos ready to sell), photos.raeder.dk (for private photos), and proofs.raeder.dk (for "artist's proof" work, i.e. unfinished pictures that are still being worked on). Made the required files (index.php, main.php, embed.php, upgrade/index.php, lib/support/index.php) and set them 666.
Created g2data directories as /var/www/SITENAME_g2data, and set them 777.
When creating databases, I can't see which site I'm making DB's for. Creating with three different table prefixes: 1000words_, raeder_, and proofs_.
Making admin user. Shouldn't there be more than one?
Making config.php files, mod 666, for each.
Activating modules except ffmpeg, gd, and migrate. Need configuration for ImageMagick and URL Rewrite.
Proofs.raeder.dk is ok by this time, but what about the rest?
Added proofs.raeder.dk VirtualHost and restarted httpd.