Finally found this tutorial :
Works perfectly, just some precisions :
Don't forget to remplace
mysql
tomysql2
in the file :database.yml
Don't forget to install
active-mysql-adapter
, before you migrate the database :gem install activerecord-mysql-adapter
And put the right for apache :
chown -R www-data:www-data redmine
Otherwise, you also need to update some packaged with
bundle
, butbundle
explain the commands for you, so no worry.