I have enabled LUKS full disk encryption on an LVM volume while installing centos6.6, however it asks for a passphrase every time the OS is rebooted.
I am now trying to use a key file according to this post. Unfortunately it does not work...and still asks for the passphrase.
/etc/cryptab
sda2 /dev/disk/by-uuid/0e7815c0-0941-431a-a6d2-cbe78132d292 /root/keyfile luks
Any ideas of a better solution to remove the passphrase and use only the keyfile?