> Now i have seen, that the new installer.pl script 
> makes at the end (after the mysql database creation) a chown to the 
> installation directory.
> So it has changed my permission to the mysql database directory.

It's nothing new, as far as I could go in our source repo, it always worked like that.

> 
> Was it a bad idea to install the mysql database in the pf directory?

Yes and no, we know we like to keep stuff in /var/lib/mysql/ since it's the standard and others don't 
look around for the database in emergency situations.

But it should not prevent you of doing what you think is fine.

> 
> Or is it possible to change the installer script, that only the 
> installed files/dir are changed?
> - Another simple solution is to print a notification in the installation 
> process.
> - Or make a notice in the Documentation section for the HA when it was a 
> good idea to include the mysql database in the pf directory.
> 
Problem is I don't even know why we set everything to be owned by pf:pf in that script and we don't let 
the RPM take care of it instead..

Also, on upgrade, you don't need to run installer.pl. That's another thing that is unclear.

# TODO: au démarrage de PF, créer les logs si les fichiers n'existent pas
# et supprimer cette section
print "Creating empty log files\n";
`touch $install_dir/logs/packetfence.log`;
`touch $install_dir/logs/snmptrapd.log`;
`touch $install_dir/logs/access_log`;
`touch $install_dir/logs/error_log`;
`touch $install_dir/logs/admin_access_log`;
`touch $install_dir/logs/admin_error_log`;
`touch $install_dir/logs/admin_debug_log`;
`touch $install_dir/logs/pfdetect`;
`touch $install_dir/logs/pfmon`;
`touch $install_dir/logs/pfredirect`;

print "Setting permissions\n";
print "  Chowning $install_dir pf:pf\n";
`chown -R pf:pf $install_dir`;
foreach my $file (@suids) {
    print "  Chowning $file root:root and setting SGID bits\n";
    `chown root:root $file`;
    `chmod 6755 $file`;
}