source : [Linsomniac's Articles - Encrypting ZFS on Ubuntu 20.04](https://linsomniac.gitlab.io/post/2020-04-09-ubuntu-2004-encrypted-zfs/)
# encrypt - Unbuntu 20.04 full ZFS install
Here we are going to install Ubuntu 20.04 in **almost** full zfs updating **zsys-setup** to permit **zfs encryption**.  Read bellow articles to understand why 2 differerent pools and full implementation.

* [ZFS focus on Ubuntu 20.04 LTS: what’s new?](https://didrocks.fr/2020/05/21/zfs-focus-on-ubuntu-20.04-lts-whats-new/)
* [ZFS focus on Ubuntu 20.04 LTS: ZSys general presentation](https://didrocks.fr/2020/05/26/zfs-focus-on-ubuntu-20.04-lts-zsys-general-presentation/)
* [ZFS focus on Ubuntu 20.04 LTS: ZSys sate management](https://didrocks.fr/2020/05/28/zfs-focus-on-ubuntu-20.04-lts-zsys-general-principle-on-state-management/)
* [ZFS focus on Ubuntu 20.04 LTS: ZSys commands for state management](https://didrocks.fr/2020/06/02/zfs-focus-on-ubuntu-20.04-lts-zsys-commands-for-state-management/)
* [ZFS focus on Ubuntu 20.04 LTS: ZSys state collection](https://didrocks.fr/2020/06/04/zfs-focus-on-ubuntu-20.04-lts-zsys-state-collection/)
* [ZFS focus on Ubuntu 20.04 LTS: ZSys for system administrators](https://didrocks.fr/2020/06/09/zfs-focus-on-ubuntu-20.04-lts-zsys-for-system-administrators/)
* [ZFS focus on Ubuntu 20.04 LTS: ZSys partition layout](https://didrocks.fr/2020/06/11/zfs-focus-on-ubuntu-20.04-lts-zsys-partition-layout/)
* [ZFS focus on Ubuntu 20.04 LTS: ZSys dataset layout](https://didrocks.fr/2020/06/16/zfs-focus-on-ubuntu-20.04-lts-zsys-dataset-layout/)
* [ZFS focus on Ubuntu 20.04 LTS: ZSys properties on ZFS datasets](https://didrocks.fr/2020/06/19/zfs-focus-on-ubuntu-20.04-lts-zsys-properties-on-zfs-datasets/)

## initial boot and ssh
Boot the Ubuntu 20.04 Desktop installer/live CD.  
Click the “Try Ubuntu” button.  
launch a terminal.   

set a passwd to root to permit remote ssh

~~~
$ sudo su
## passwd
New password :
Retype new passord :
passwd: password updated successfully
~~~

Install ssh to simplfy configuration edit.

~~~
## apt install ssh
~~~

Edit **/etc/ssh/sshd_config** to **Enable PermitRootLogin** change *prohibit-password* to *yes* like bellow.

~~~{.shell}
#PermitRootLogin prohibit-password
PermitRootLogin yes
~~~

~~~
service ssh restart
~~~

find yout IP with : *ip a*  

then connect remotely with : *ssh*

## update zsys-setup to enable zfs encryption on rpool

The zsys-setup script is here : /usr/share/ubiquity/zsys-setup  

bpool remain unencrypt.  

Search for “zpool create”, and make sure you have found the create command that has “rpool” on the last line.

Before the “zpool create” insert: echo MYPASSWORD |

Before the last line of the command insert these lines:  

~~~{.cpp}
-O recordsize=1M \
-O encryption=aes-256-gcm \
-O keylocation=prompt \
-O keyformat=passphrase \
~~~

## swap

you may be interrested if you are on a laptop in : [right fit swap for laptop hibernation Ubuntu 20.04 full ZFS install](right-fit-swap-for-laptop-hibernation-Ubuntu-20.04-full-ZFS-install)

## start installation

Run ubiquity to start the installer and install as normal, selecting “Use entire disk” and the option to use ZFS.

## questions to be solves

* what happen if zpool passwd is not given at boot shutdown ?
* find a way to shut it down pass a delay