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install.sh
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install.sh
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#!/bin/bash
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set -euo pipefail
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### === Uživatelské proměnné === ###
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DISK1="/dev/sdX" # např. /dev/sda nebo /dev/nvme0n1
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DISK2="/dev/sdY" # např. /dev/sdb nebo /dev/nvme1n1
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HOSTNAME="zfs-server"
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ZFS_POOL="rpool"
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ZFS_BOOTFS="ubuntu-noble"
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ZBM_VERSION="2.4.0"
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MOUNTPOINT="/mnt"
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UBUNTU_SUITE="noble"
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TIMEZONE="Europe/Prague"
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LOCALE="cs_CZ.UTF-8"
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KEYMAP="cz"
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DEBIAN_MIRROR="http://cz.archive.ubuntu.com/ubuntu"
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### ============================ ###
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ZFS_OPTS_POOL="-o ashift=12 -o autotrim=on"
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ZFS_OPTS_DATASETS="-O acltype=posixacl -O xattr=sa -O compression=zstd -O relatime=on -O normalization=formD -O dnodesize=auto -O atime=off -O mountpoint=none -O canmount=off"
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echo "== Čištění disků =="
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for DISK in "$DISK1" "$DISK2"; do
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sgdisk --zap-all "$DISK"
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dd if=/dev/zero of="$DISK" bs=512 count=2048
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wipefs -a "$DISK"
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done
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echo "== Vytváření GPT tabulky a oddílů =="
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for DISK in "$DISK1" "$DISK2"; do
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sgdisk -n1:1M:+1G -t1:EF00 -c1:"EFI System Partition" "$DISK"
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sgdisk -n2:0:0 -t2:BF00 -c2:"ZFS root" "$DISK"
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done
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PART1_DISK1=$(ls ${DISK1}* | grep -E "${DISK1}p?1$")
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PART1_DISK2=$(ls ${DISK2}* | grep -E "${DISK2}p?1$")
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PART2_DISK1=$(ls ${DISK1}* | grep -E "${DISK1}p?2$")
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PART2_DISK2=$(ls ${DISK2}* | grep -E "${DISK2}p?2$")
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echo "== Formátování EFI oddílů =="
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mkfs.vfat -F32 -n EFI "$PART1_DISK1"
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mkfs.vfat -F32 -n EFI "$PART1_DISK2"
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echo "== Vytváření ZFS poolu ($ZFS_POOL) =="
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zpool create -f $ZFS_OPTS_POOL $ZFS_OPTS_DATASETS \
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-R "$MOUNTPOINT" \
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"$ZFS_POOL" mirror "$PART2_DISK1" "$PART2_DISK2"
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zfs create "$ZFS_POOL/ROOT"
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zfs create -o mountpoint=/ "$ZFS_POOL/ROOT/$ZFS_BOOTFS"
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zfs create -o mountpoint=/home "$ZFS_POOL/home"
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zfs create -o mountpoint=/var "$ZFS_POOL/var"
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zfs create -o mountpoint=/var/log "$ZFS_POOL/var/log"
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zfs create -o mountpoint=/var/tmp "$ZFS_POOL/var/tmp"
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zfs create -o mountpoint=/var/cache "$ZFS_POOL/var/cache"
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zfs create -o mountpoint=/var/lib "$ZFS_POOL/var/lib"
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zfs create -o mountpoint=/srv "$ZFS_POOL/srv"
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zfs create -o mountpoint=/tmp "$ZFS_POOL/tmp"
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zfs set canmount=noauto "$ZFS_POOL/ROOT/$ZFS_BOOTFS"
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zfs mount "$ZFS_POOL/ROOT/$ZFS_BOOTFS"
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mkdir -p "$MOUNTPOINT"/{boot/efi,home,var/log,var/tmp,var/cache,var/lib,srv,tmp}
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echo "== Montování EFI oddílů =="
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mount "$PART1_DISK1" "$MOUNTPOINT/boot/efi"
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echo "== Bootstrap Ubuntu base systému =="
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debootstrap --components=main,universe --arch=amd64 "$UBUNTU_SUITE" "$MOUNTPOINT" "$DEBIAN_MIRROR"
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echo "== Příprava chroot prostředí =="
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mount --rbind /dev "$MOUNTPOINT/dev"
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mount --rbind /proc "$MOUNTPOINT/proc"
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mount --rbind /sys "$MOUNTPOINT/sys"
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cp /etc/resolv.conf "$MOUNTPOINT/etc/"
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cat <<EOF > "$MOUNTPOINT/root/post-chroot.sh"
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#!/bin/bash
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set -e
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export HOSTNAME="$HOSTNAME"
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export ZFS_POOL="$ZFS_POOL"
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export ZFS_BOOTFS="$ZFS_BOOTFS"
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export TIMEZONE="$TIMEZONE"
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export LOCALE="$LOCALE"
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export KEYMAP="$KEYMAP"
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export ZBM_VERSION="$ZBM_VERSION"
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echo "\$HOSTNAME" > /etc/hostname
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ln -sf /usr/share/zoneinfo/\$TIMEZONE /etc/localtime
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apt update
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apt install -y locales keyboard-configuration console-setup
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sed -i "s/# \$LOCALE UTF-8/\$LOCALE UTF-8/" /etc/locale.gen
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locale-gen
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update-locale LANG=\$LOCALE
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echo "KEYMAP=\$KEYMAP" > /etc/vconsole.conf
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apt install -y linux-image-generic zfs-initramfs zfsutils-linux zfs-zed \
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dosfstools grub-efi-amd64 shim-signed efibootmgr curl
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zfs set canmount=noauto \$ZFS_POOL/ROOT/\$ZFS_BOOTFS
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zfs mount \$ZFS_POOL/ROOT/\$ZFS_BOOTFS
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zfs set mountpoint=/ \$ZFS_POOL/ROOT/\$ZFS_BOOTFS
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zpool set bootfs=\$ZFS_POOL/ROOT/\$ZFS_BOOTFS \$ZFS_POOL
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useradd -m -s /bin/bash ubuntu
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echo "ubuntu:ubuntu" | chpasswd
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adduser ubuntu sudo
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echo "⚠️ Výchozí heslo pro uživatele 'ubuntu' je 'ubuntu'. Změň ho po restartu."
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echo "== Instalace GRUB na oba disky =="
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grub-install --target=x86_64-efi --efi-directory=/boot/efi \
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--removable --recheck --bootloader-id=ubuntu
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update-grub
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echo "== Instalace ZFSBootMenu (volitelný fallback) =="
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mkdir -p /boot/efi/EFI/ZBM
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curl -L https://github.com/zbm-dev/zfsbootmenu/releases/download/v\$ZBM_VERSION/zfsbootmenu-efi-\$ZBM_VERSION-x86_64.EFI -o /boot/efi/EFI/ZBM/ZBM.EFI
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cat <<GRUBENTRY >> /etc/grub.d/40_custom
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menuentry "ZFSBootMenu" {
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insmod part_gpt
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insmod fat
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insmod chain
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search --no-floppy --label EFI --set=root
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chainloader /EFI/ZBM/ZBM.EFI
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}
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GRUBENTRY
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update-grub
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echo "== Hotovo. Nyní spusť: exit && umount a export poolu"
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EOF
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chmod +x "$MOUNTPOINT/root/post-chroot.sh"
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echo
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echo "=========================="
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echo "✅ Chroot a konfigurace:"
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echo "sudo chroot $MOUNTPOINT /bin/bash"
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echo "/root/post-chroot.sh"
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echo
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echo "Poté ukonči chroot a spusť:"
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echo "umount -l $MOUNTPOINT/dev $MOUNTPOINT/proc $MOUNTPOINT/sys $MOUNTPOINT/boot/efi"
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echo "zpool export $ZFS_POOL"
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echo "=========================="
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