254 lines
6.1 KiB
Bash
254 lines
6.1 KiB
Bash
#!/bin/bash
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# Script joué le 2021-11-15 par abenmiloud
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# * Serveur RISE-3 - Intel Xeon-E 2288G - 8c/16t - 3.7 GHz/5 GHz - 32 GB ECC 2666 MHz - SoftRaid3×4 TB HDD SATA
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# Le script suppose que :
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# * il y a 3 disques en RAID soft
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# * le serveur boot en UEFI
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# * on va reconstruire toute la table de partitionnement (GPT) du serveur
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# * le volume "rootfs" actuel est /dev/md127
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# Enfin un fstab est généré, le raid est configuré, lvm2 est installé,
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# le volume de backup sera traitée plus tard grubet le kernel est réinstallé.
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# Avant de commencer, consulter les disques pour vérifier les noms
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lsblk
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################################################################################
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#
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# À partir de là, le script *peut* être copié/collé en un bloc
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# Mais bien vérifier l'état au fur et à mesure
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export LC_ALL=C
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swapoff -a
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sleep 1
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cd /mnt
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mkdir root_in_ram rootfs home var usr srv
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mount -t tmpfs none /mnt/root_in_ram -o size=90%
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mount /dev/md127 /mnt/rootfs/
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sleep 1
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rsync -a /mnt/rootfs/ /mnt/root_in_ram/
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sleep 1
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umount /mnt/rootfs
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sleep 1
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mdadm --stop /dev/md127
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sleep 1
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# Create a GPT label. (Removes all parts).
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parted -s /dev/sda mklabel gpt
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sleep 1
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# /boot/efi
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parted -a minimal -s /dev/sda mkpart ESP fat32 0M 100M
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sleep 1
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parted -s /dev/sda set 1 esp on
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sleep 1
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parted -s /dev/sda set 1 boot on
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sleep 1
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mkfs.vfat -F32 /dev/sda1 > /dev/null
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sleep 1
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# /boot
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parted -a minimal -s /dev/sda mkpart primary ext4 100M 600M
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sleep 1
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parted -s /dev/sda set 2 boot on
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sleep 1
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parted -s /dev/sda set 2 raid on
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sleep 1
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# /
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parted -a minimal -s /dev/sda mkpart primary ext4 600M 1600M
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sleep 1
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parted -s /dev/sda set 3 raid on
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sleep 1
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# /usr
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parted -a minimal -s /dev/sda mkpart primary ext4 1600M 7600M
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sleep 1
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parted -s /dev/sda set 4 raid on
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sleep 1
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# swap
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parted -a minimal -s /dev/sda mkpart primary ext4 7600M 8100M
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sleep 1
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parted -a minimal -s /dev/sda mkpart primary ext4 8100M 8600M
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sleep 1
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# LVM
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parted -a minimal -s /dev/sda mkpart primary ext4 8600M 100%
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sleep 1
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parted -s /dev/sda set 7 raid on
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sleep 1
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# Copy partitions to second disk
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sgdisk -R=/dev/sdb /dev/sda
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sleep 1
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sgdisk -G /dev/sdb
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sleep 1
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partprobe /dev/sda
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sleep 1
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partprobe /dev/sdb
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sleep 1
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# Copy partitions to third disk
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sgdisk -R=/dev/sdc /dev/sda
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sleep 1
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sgdisk -G /dev/sdc
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sleep 1
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partprobe /dev/sda
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sleep 1
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partprobe /dev/sdc
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sleep 1
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# RAID5 for systems.
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# Metadata 0.90 as some OVH kernel need it to boot.
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for part in 2 3 4 7
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do
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mdadm --create /dev/md"${part}" --metadata=0.90 --level=raid5 --raid-device=3 /dev/{sda,sdb,sdc}"${part}"
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done
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sleep 1
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mkfs.ext4 /dev/md2 > /dev/null
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sleep 1
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mkfs.ext4 /dev/md3 > /dev/null
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sleep 1
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mkfs.ext4 /dev/md4 > /dev/null
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sleep 1
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for disk in sda sdb sdc
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do
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for part in 5 6
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do
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mkswap -f /dev/"${disk}""${part}"
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sleep 1
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done
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done
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# Add LVM with a VG for all of the free space.
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pvcreate /dev/md7
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sleep 1
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vgcreate vg0 /dev/md7
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sleep 1
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lvcreate --size 1G --name tmp vg0
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sleep 1
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mkfs.ext4 /dev/mapper/vg0-tmp > /dev/null
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sleep 1
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lvcreate --size 5G --name var vg0
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sleep 1
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mkfs.ext4 /dev/mapper/vg0-var > /dev/null
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sleep 1
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lvcreate --size 10G --name home vg0
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sleep 1
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mkfs.ext4 /dev/mapper/vg0-home > /dev/null
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sleep 1
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# Copy data from RAM.
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mount /dev/md3 /mnt/rootfs
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mkdir -p /mnt/rootfs/home && mount /dev/mapper/vg0-home /mnt/rootfs/home
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mkdir -p /mnt/rootfs/var && mount /dev/mapper/vg0-var /mnt/rootfs/var
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mkdir -p /mnt/rootfs/usr && mount /dev/md4 /mnt/rootfs/usr
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mkdir -p /mnt/rootfs/boot && mount /dev/md2 /mnt/rootfs/boot
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mkdir -p /mnt/rootfs/boot/efi && mount /dev/sda1 /mnt/rootfs/boot/efi
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mkdir -p /mnt/rootfs/tmp && mount /dev/mapper/vg0-tmp /mnt/rootfs/tmp
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sleep 1
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rsync -a /mnt/root_in_ram/home/ /mnt/rootfs/home/
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rsync -a /mnt/root_in_ram/var/ /mnt/rootfs/var/
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rsync -a /mnt/root_in_ram/usr/ /mnt/rootfs/usr/
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rsync -a \
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--exclude="home/**" \
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--exclude="var/**" \
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--exclude="usr/**" \
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--exclude="boot/**" \
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/mnt/root_in_ram/ /mnt/rootfs/
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sleep 1
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# Generate fstab.
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cat <<EOT > /mnt/rootfs/etc/fstab
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UUID=… /boot/efi vfat defaults 0 2
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UUID=… / ext4 errors=remount-ro 0 1
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UUID=… /boot ext4 defaults 0 2
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UUID=… /home ext4 defaults 0 2
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UUID=… /tmp ext4 defaults 0 2
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UUID=… /usr ext4 defaults 0 2
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UUID=… /var ext4 defaults 0 2
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UUID=… none swap sw 0 2
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UUID=… none swap sw 0 2
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UUID=… none swap sw 0 2
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UUID=… none swap sw 0 2
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UUID=… none swap sw 0 2
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UUID=… none swap sw 0 2
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EOT
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# Chroot and install lvm2 + reconfigure grub-pc
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mount -t proc none /mnt/rootfs/proc
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mount -o bind /dev /mnt/rootfs/dev
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mount -o bind /dev/pts /mnt/rootfs/dev/pts
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mount -t sysfs sys /mnt/rootfs/sys
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mount --bind /run /mnt/rootfs/run
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chroot /mnt/rootfs/ bash
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sleep 1
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# BEGIN chroot
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export LC_ALL=C
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chmod 1777 /tmp
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sleep 1
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# purge des paquets de Grub et du noyau, pour réinitialiser complètement les config
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rm -rf /etc/default/grub.d
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apt purge -y os-prober grub-common grub-efi grub-efi-amd64 grub-efi-amd64-bin grub-pc grub2-common
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sleep 1
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# purge des paquets de Grub et du noyau, pour réinitialiser complètement les config
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rm -rf /etc/default/grub.d
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apt purge -y os-prober grub-common grub-efi grub-efi-amd64 grub-efi-amd64-bin grub-pc grub2-common
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sleep 1
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# purge des kernels
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for kernel_pkg in $(dpkg -l | grep linux-image | awk '{ print $2 }')
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do
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apt purge -y "${kernel_pkg}"
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done
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sleep 1
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# copie de la config RAID soft
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/usr/share/mdadm/mkconf > /etc/mdadm.conf
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sleep 1
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# réinstallation des paquets
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apt install -y lvm2 grub-common grub-efi grub-efi-amd64 grub-efi-amd64-bin grub2-common linux-image-amd64
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sleep 1
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apt purge -y os-prober
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dd if=/dev/sda1 of=/dev/sdb1
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dd if=/dev/sda1 of=/dev/sdc1
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efibootmgr -c -g -d /dev/sdb -p 1 -L debian -l '\EFI\debian\grubx64.efi'
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efibootmgr -c -g -d /dev/sdc -p 1 -L debian -l '\EFI\debian\grubx64.efi'
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grub-install /dev/sda
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sleep 1
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grub-install /dev/sdb
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sleep 1
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grub-install /dev/sdc
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sleep 1
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# Questions "update-grub":
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# * Linux command line:
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# * Linux default command line: quiet
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# * Force extra installation to the EFI removable media path? Yes
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# * Update NVRAM variables to automatically boot into Debian? Yes
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update-grub
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dpkg-reconfigure grub-efi-amd64
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sleep 1
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passwd debian
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vi /etc/ssh/sshd_config
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systemctl reload ssh.service
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exit
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# END chroot
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echo "Evolix partitioning done... You can now reboot!"
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