Noob starting first server. Installed Ubuntu server, and opted for LVM. However, will that cause me problems on a headless server if I get a power outage and need to reboot? I think yes. Is there a solution, or should i remove LVM before i go too deep setting things up?
Ah, you're talking about LUKS. LVM is just the volume manager.
The standard way is to add an
sshd(such as dropbear) to yourinitramfsso that you can ssh in and run commands (such as entering the root partition password) during system boot.See:
https://unix.stackexchange.com/questions/5017/ssh-to-decrypt-encrypted-lvm-during-headless-server-boot