Hello, this topic is about sharing information about how to encrypt data on linux server.
Maybe you know linux server HDD data are easilly readable, they are not encrypted.

In my case i rent server from other country and i have SSH access.

So far, found 2 tutorials on how to encrypt disk partition using LUKS:
http://david.dw-perspective.org.uk/da/index.php/computer-resources/encrypted-partitions-on-linux-with-luks/ - simple
http://www.cyberciti.biz/hardware/howto-linux-hard-disk-encryption-with-luks-cryptsetup-command/ - more detailed

df -hFilesystem                        Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00   14G  5.1G  7.5G  41% /
/dev/sda5                         99M   19M   76M  20% /boot
tmpfs                             442M     0  442M   0% /dev/shm
/dev/mapper/VolGroup00-LogVol02    79G   17G   63G  22% /home

yum install cryptsetup-luks policycoreutils
cp -a /home/* /path/to/backup/directory/
/sbin/cryptsetup luksFormat /dev/mapper/VolGroup00-LogVol02
cryptsetup luksOpen /dev/mapper/VolGroup00-LogVol02 home
mke2fs -j -m 0 -L /home /dev/mapper/home
home    /dev/mapper/VolGroup00-LogVol02
/dev/mapper/home        /home                   ext3    defaults        1 2
/dev/mapper/VolGroup00-LogVol02   /home                   ext3    defaults        1 2
mount /home
mount /dev/mapper/home
cp -a /path/to/backup/directory/home/* /home/
restorecon -r /home
But i did not yet solved yet these doubts:
- when having webserver and another software on server, this SW tries to contact data on encrypted partition on boot time, but they wont be available untill i enter decrypt password i assume? so im unsure how to go around this.