Untested upgrade script for Redmine, hopefully can streamline upgrading an install.

update-redmine.sh

#!/bin/sh

VERSION=2.2.3
URL=http://files.rubyforge.vm.bytemark.co.uk/redmine/redmine-$VERSION.tar.gz
SITES_DIR=/home/sites
SITE=example.com

cd $SITE_DIR

curl -O $URL
tar zxf redmine-$VERSION.tgz
rm redmine-$VERSION.tgz

OLD=$SITE_DIR/$SITE
NEW=$SITE_DIR/redmine-$VERSION

# copy configuration, files, & plugins to new install
cp $OLD/config/database.yml $NEW/config/
cp $OLD/config/configuration.yml $NEW/config/
cp -R $OLD/files/* $NEW/files/
cp -R $OLD/plugins/* $NEW/plugins/

cd $NEW
mkdir public/plugin_assets

bundle install --without development test mysql
rake generate_secret_token
rake db:migrate RAILS_ENV=production
rake redmine:plugins:migrate RAILS_ENV=production
rake tmp:cache:clear
rake tmp:sessions:clear

mv $OLD ${OLD}_bak
mv $NEW $OLD
touch $OLD/tmp/restart.txt