A hook for initramfs to include a script to ease decryption of encrypted root file systems in early boot (e.g., via dropbear/ssh).
Assume you have your '/' file system encrypted and your server is (in a galaxy) far, far away. How do you enter the password to unlock '/'?
- Follow this nice blog post
- Place that hook into /etc/initramfs-tools/hooks and regenerate the initramfs
- Regenerate initramfs
- Reboot
- You can now connect to your server's initramfs via ssh and execute '/sbin/decryptroot'