In Debian, I am able to unlock multiple disks at bootup with only one prompt, using decrypt_keyctl and the initramfs switch in /etc/crypttab. I am wondering how to do this in CentOS-7?
A plain vanilla install of Nethserver with two luks devices has a crypttab is similar to this:
luks_root UUID=<uuid1> none luks_swap UUID=<uuid2> none
I'd like to add another disk. (And, how is it the present bootup happens with only one password prompt, when there are two devices?)