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This commit is contained in:
Michel Le Cocq
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source : [Linsomniac's Articles - Encrypting ZFS on Ubuntu 20.04](https://linsomniac.gitlab.io/post/2020-04-09-ubuntu-2004-encrypted-zfs/)
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source : [Linsomniac's Articles - Encrypting ZFS on Ubuntu 20.04](https://linsomniac.gitlab.io/post/2020-04-09-ubuntu-2004-encrypted-zfs/)
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# encrypt - Unbuntu 20.04 full ZFS install
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# encrypt - Unbuntu 20.04 full ZFS install
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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.
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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.
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* [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/)
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* [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/)
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* [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/)
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* [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/)
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* [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/)
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* [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/)
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* [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/)
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* [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/)
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* [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/)
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* [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/)
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* [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/)
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* [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/)
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* [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/)
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* [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/)
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* [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/)
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* [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/)
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* [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/)
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* [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/)
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## initial boot and ssh
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## initial boot and ssh
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Boot the Ubuntu 20.04 Desktop installer/live CD.
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Boot the Ubuntu 20.04 Desktop installer/live CD.
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Click the “Try Ubuntu” button.
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Click the “Try Ubuntu” button.
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launch a terminal.
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launch a terminal.
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set a passwd to root to permit remote ssh
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set a passwd to root to permit remote ssh
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~~~
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~~~
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$ sudo su
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$ sudo su
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## passwd
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## passwd
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New password :
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New password :
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Retype new passord :
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Retype new passord :
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passwd: password updated successfully
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passwd: password updated successfully
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~~~
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~~~
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Install ssh to simplfy configuration edit.
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Install ssh to simplfy configuration edit.
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~~~
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~~~
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## apt install ssh
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## apt install ssh
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~~~
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~~~
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Edit **/etc/ssh/sshd_config** to **Enable PermitRootLogin** change *prohibit-password* to *yes* like bellow.
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Edit **/etc/ssh/sshd_config** to **Enable PermitRootLogin** change *prohibit-password* to *yes* like bellow.
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~~~{.shell}
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~~~{.shell}
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#PermitRootLogin prohibit-password
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#PermitRootLogin prohibit-password
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PermitRootLogin yes
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PermitRootLogin yes
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~~~
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~~~
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~~~
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~~~
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service ssh restart
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service ssh restart
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~~~
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~~~
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find yout IP with : *ip a*
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find yout IP with : *ip a*
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then connect remotely with : *ssh*
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then connect remotely with : *ssh*
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## update zsys-setup to enable zfs encyption on rpool
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## update zsys-setup to enable zfs encyption on rpool
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bpool remain unencrypt.
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bpool remain unencrypt.
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Search for “zpool create”, and make sure you have found the create command that has “rpool” on the last line.
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Search for “zpool create”, and make sure you have found the create command that has “rpool” on the last line.
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Before the “zpool create” insert: echo MYPASSWORD |
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Before the “zpool create” insert: echo MYPASSWORD |
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Before the last line of the command insert these lines:
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Before the last line of the command insert these lines:
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~~~{.cpp}
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~~~{.cpp}
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-O recordsize=1M \
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-O recordsize=1M \
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-O encryption=aes-256-gcm \
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-O encryption=aes-256-gcm \
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-O keylocation=prompt \
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-O keylocation=prompt \
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-O keyformat=passphrase \
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-O keyformat=passphrase \
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~~~
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~~~
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## swap
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## swap
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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)
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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)
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## start installation
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## start installation
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Run ubiquity to start the installer and install as normal, selecting “Use entire disk” and the option to use ZFS.
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Run ubiquity to start the installer and install as normal, selecting “Use entire disk” and the option to use ZFS.
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## questions to be solves
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## questions to be solves
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* what happen if zpool passwd is not given at boot shutdown ?
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* what happen if zpool passwd is not given at boot shutdown ?
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* find a way to shut it down pass a delay
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@ -12,7 +12,7 @@
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* Turn off swap
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* Turn off swap
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~~~
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~~~
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swapoff /dev/mapper/cryptswap1
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swapoff /dev/mapper/cryptswap
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~~~
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~~~
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* Undo the existing mapping.
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* Undo the existing mapping.
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@ -64,3 +64,5 @@ mkswap /dev/nvme0n1p2
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~~~
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~~~
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swapon -a
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swapon -a
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~~~
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~~~
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Next you need to reboot to enable everything and test it.
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@ -1,58 +1,62 @@
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## encrypt swap partition
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## prerequisite
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sources :
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* all command bellow are run has root
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* [wiki.archlinux.org - dm-crypt/Swap encryption](https://wiki.archlinux.org/index.php/Dm-crypt/Swap_encryption#LVM_on_LUKS)
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* [help.ubuntu.com - Enable Hibernate With Encrypted Swap](https://help.ubuntu.com/community/EnableHibernateWithEncryptedSwap)
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## encrypt swap partition
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~~~
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sources :
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apt-get install ecryptfs-utils
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* [wiki.archlinux.org - dm-crypt/Swap encryption](https://wiki.archlinux.org/index.php/Dm-crypt/Swap_encryption#LVM_on_LUKS)
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swapoff -a
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* [help.ubuntu.com - Enable Hibernate With Encrypted Swap](https://help.ubuntu.com/community/EnableHibernateWithEncryptedSwap)
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cryptsetup luksFormat --cipher aes-xts-plain64 --verify-passphrase --key-size 256 /dev/nvme0n1p2
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cryptsetup open /dev/<device> cryptswap
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~~~
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mkswap /dev/mapper/cryptswap
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apt-get install ecryptfs-utils
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~~~
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swapoff -a
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cryptsetup luksFormat --cipher aes-xts-plain64 --verify-passphrase --key-size 256 /dev/nvme0n1p2
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/!\ le point ci-dessous est sans doute inutile
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cryptsetup open /dev/nvme0n1p2 cryptswap
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mkswap /dev/mapper/cryptswap
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* Change your /etc/default/grub GRUB_CMDLINE_LINUX_DEFAULT to remove resume part wich is now manage by initramfs
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~~~
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~~~
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/!\ le point ci-dessous est sans doute inutile
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GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
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~~~
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* Change your /etc/default/grub GRUB_CMDLINE_LINUX_DEFAULT to remove resume part wich is now manage by initramfs
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~~~
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~~~
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update-grub
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GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
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~~~
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~~~
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Now ajust /etc/fstab to use your mapper, replace your encrypt swap device like bellow :
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~~~
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update-grub
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~~~
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~~~
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/dev/mapper/cryptswap none swap discard 0 0
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~~~
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Now ajust /etc/fstab to use your mapper, replace your encrypt swap device like bellow :
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add your encrypt swap device define in /etc/crypttab
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~~~
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/dev/mapper/cryptswap none swap discard 0 0
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~~~
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~~~
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cryptswap /dev/nvme0n1p2 none luks
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~~~
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add your encrypt swap device define in /etc/crypttab
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~~~
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~~~
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swapon -a
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cryptswap /dev/nvme0n1p2 none luks
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~~~
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~~~
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~~~
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~~~
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printf "RESUME=UUID=/dev/mapper/cryptswap" | tee /etc/initramfs-tools/conf.d/resume
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swapon -a
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~~~
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~~~
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Register these changes.
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~~~
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printf "RESUME=UUID=/dev/mapper/cryptswap" | tee /etc/initramfs-tools/conf.d/resume
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~~~
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~~~
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update-initramfs -u -k all
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~~~
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Register these changes.
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### to be solve
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~~~
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update-initramfs -u -k all
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~~~
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~~~
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cryptsetup: ERROR: Couln't resolve device rpool/ROOT/ubuntu_...
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cryptsetup: WARNING: Couln't determine root device
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### to be solve
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~~~
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~~~
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cryptsetup: ERROR: Couln't resolve device rpool/ROOT/ubuntu_...
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cryptsetup: WARNING: Couln't determine root device
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~~~
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