Am 12.03.21 um 22:51 schrieb ept8ept8@secmail.pro:

Hi I was reading about how unlock encrypted root partition from remote (unattended). I'd like asking what is compatible way for this in centos and commonly used by administrators?

I think most simple is install dropbear in initramfs for allow remote SSH and manual enter passphrase. I find many HOWTO for that on debian/ubuntu, but nothing for centos.

Is there any help, recommend or HOWTO available for centos?

https://github.com/gsauthof/dracut-sshd

-- Leon

On 3/12/21 1:51 PM, ept8ept8@secmail.pro wrote:

Hi I was reading about how unlock encrypted root partition from remote (unattended). I'd like asking what is compatible way for this in centos and commonly used by administrators?

What's your threat model?  Are you trying to protect the system from physical theft, or are you trying to make sure the disks aren't readable when they're retired or fail?

For most purposes, I recommend enrolling the disk with the TPM2 chip, so that disks can be unlocked at boot without human intervention.  If theft is a concern, you'd need to ensure that the bootloader requires a password, and that the firmware boots only from the internal disk without a password:

clevis luks bind -d /dev/VOLUME tpm2 '{"pcr_ids":"7"}'