Prepare encrypted system to be unlocked remotely.
Highly inspired by and credits to:
- https://hamy.io/post/0009/how-to-install-luks-encrypted-ubuntu-18.04.x-server-and-enable-remote-unlocking/
- https://github.com/martin-v/ansible-sshpreluks
There are multiple ways to unlock. For example:
ssh root@your.server -p 2244
cryptroot-unlock
And then type your passphrase. Or:
ssh root@your.server -p 2244 'plymouth --quit; echo -ne "your LUKS passphrase" > /lib/cryptsetup/passfifo'
plymouth --quit is needed because of not fixed bug: https://askubuntu.com/questions/66785/how-can-one-unlock-a-fully-encrypted-ubuntu-11-10-system-over-ssh-at-boot
System encrypted with LUKS. Tested only on Ubuntu 18.04.
See defaults/main.yml
No dependencies.
Including an example of how to use your role (for instance, with variables passed in as parameters) is always nice for users too:
- hosts: servers
roles:
- role: Bessonov.ansible-role-luks-remote-unlocking
become: yes
# optional, eth0 is used by default
luks_remote_bind_to_network_device: enp0s8
# insert your keys
luks_remote_public_keys:
# use file
- "{{ lookup('file', 'your/key.pub') }}"
# or inline
- ssh-rsa AAAAQ [...]
MIT License
Copyright (c) 2019 Anton Bessonov
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.