Redmine

hi ,

how can i secure my database.yml and configuration.yml ??

Still i have these configuration .but i am in doubt

/var/www/redmine/config/configuration.yml
chown root:nginx configuration.yml
chmod 755 configration.yml

/var/www/redmine/config/database.yml
chown root:nginx database.yml
chmod 755 database.yml

thanks and waiting for response .