Momesso Andrea wrote:
Ok, but what about databases? Joomla has his own and mediawiki too...
Just dump it and copy it? Will it work?
It will work. The way I do it with AutoMySQLBackup:
http://members.lycos.co.uk/wipe_out/automysqlbackup
It's a simple but powerful script that backs up MySQL databases (all of
them by specifying "all" or just a select few). It keeps 4 copies per
month (one for each week), 7 copies per week (one for each day), one
latest copy plus monthly ones. You put it in /etc/cron.daily, edit it
and make it executable. It has documentation so you can probably figure
it out easily.
If the main machine goes down, you import all the backed up databases on
the other machine.
Another way to do it is to run MySQL on the same machine that does the
NAT, but in this case you can not operate both machines behind it at the
same time (that would mean the two Joomlas installed on both would try
to access the same database at the same time; that won't work and will
probably damage the database.)