debian 10 LTSP 20.3 install with chroot

gistfile1.txt

- [-] Install *LTSP 20.3* on *debian10-ltsp*

  - [X] Change to root
    : su -

  - [X] Configure PPA

    The PPA gets updated before the repository (even debian testing)
    : wget https://ltsp.org/misc/ltsp-ubuntu-ppa-bionic.list -O /etc/apt/sources.list.d/ltsp-ubuntu-ppa-bionic.list
    : wget https://ltsp.org/misc/ltsp_ubuntu_ppa.gpg -O /etc/apt/trusted.gpg.d/ltsp_ubuntu_ppa.gpg
    : apt update

  - [X] Install LTSP 20.3

    Install ltsp and required packages
    : apt install --install-recommends ltsp ltsp-binaries dnsmasq nfs-kernel-server openssh-server squashfs-tools ethtool net-tools epoptes

  - [X] Add permissions for epoptes
    : gpasswd -a <user> epoptes

    eg;
    : gpasswd -a map7 epoptes

  - [X] Configure dnsmasq for tftp only (no DHCP)
    : ltsp dnsmasq
    
  - [X] Build chroot image
    : ltsp image -m "-comp zstd" /

  - [X] Configure NFS mounts
    : ltsp nfs

  - [X] Configure iPXE menu
    : ltsp ipxe

  - [X] Generate ltsp.img
    : ltsp initrd

  - [X] Test booting fat-client = 29secs iPXE -> Login with 10secs blank

  - [X] Test booting with dd cache = 28secs iPXE => Login with 3secs blank

    Create config
    : install -m 0660 -g sudo /usr/share/ltsp/common/ltsp/ltsp.conf /etc/ltsp/ltsp.conf

    Add to /etc/ltsp/ltsp.conf [clients] section
    : PRE_INITRD_BOTTOM_IMAGE_TO_RAM="dd if=/root/images/x86_64.img of=/dev/null &"

    Update settings
    : ltsp initrd

    The total time isn't that different from booting without cache as we have to copy over the entire
    image to the thin clients RAM, but once that is done everything loads fast, including what ever it's
    doing in the 'blank' part.

  - [X] Create Chroot for LTSP clients
    Why not use the root image? Because it's 180GB! Let's create a smaller version.

    : cd /srv
    : mkdir ltsp
    : cd ltsp
    : apt install debootstrap
    : debootstrap buster x86_64
    : chroot x86_64
    : apt install --no-install-recommends linux-image-amd64 initramfs-tools
    : passwd
    : exit

    Add the following line in /etc/exports
    : /srv/ltsp/x86_64	*(rw,async,crossmnt,no_subtree_check,no_root_squash,insecure)

    To export it via NFS
    : exportfs -ra

  - [X] Chroot into image and install xfce4

    Add the following to a script /srv/ltsp/ltsp-chroot-bind
    : #!/bin/bash
    : 
    : # Edit to suit
    : CHROOT_PATH=/srv/ltsp/x86_64
    : 
    : sudo mount -o bind /proc ${CHROOT_PATH}/proc
    : sudo mount -o bind /dev ${CHROOT_PATH}/dev
    : sudo mount -o bind /dev/pts ${CHROOT_PATH}/dev/pts
    : sudo mount -o bind /sys ${CHROOT_PATH}/sys
    : 
    : sudo chroot ${CHROOT_PATH} /bin/bash
    : 
    : CHROOT_PID=$!
    : wait $CHROOT_PID
    : 
    : echo "Unmounting chroot environment"
    : sudo umount $CHROOT_PATH/sys
    : sudo umount $CHROOT_PATH/dev/pts
    : sudo umount $CHROOT_PATH/dev
    : sudo umount $CHROOT_PATH/proc

    Then run the script
    : bash ./ltsp-chroot-bind

    Install xfce4
    : apt install xfce4

  - [X] Build chroot image
    : ltsp image -m "-comp zstd" x86_64
    : ltsp initrd
    NOTE: I remarked out the dd cache in /etc/ltsp/ltsp.conf for now.

  - [ ] Test booting = fails
    : mount: No such file or dir
    : mount: invalid option --
    : done.
    : mount: No such file or dir
    : run-init: opening console: No such file or dir 

Had to install ltsp

  The PPA gets updated before the repository (even debian testing)
  : apt install wget
  : wget https://ltsp.org/misc/ltsp-ubuntu-ppa-bionic.list -O /etc/apt/sources.list.d/ltsp-ubuntu-ppa-bionic.list
  : wget https://ltsp.org/misc/ltsp_ubuntu_ppa.gpg -O /etc/apt/trusted.gpg.d/ltsp_ubuntu_ppa.gpg
  : apt update

- [X] Install LTSP 20.3

  Install ltsp and required packages
  : apt install --install-recommends ltsp ltsp-binaries dnsmasq nfs-kernel-server openssh-server squashfs-tools ethtool net-tools epoptes

Then rebuilt image and it worked