Ajout OVH-SYS_Soft_RAID1_KVMServer_EFI_NVMe.sh
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#!/bin/bash
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# Script écrit le 2023-01-17 par jdubois (sur copie du script OVH-SYS_Soft_RAID1_KVMServer_EFI_NVMe.sh en modifiant simplement la taille des SWAP)
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# Fonctionne pour les serveurs SYS-5-SSD-32
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# Le script suppose que :
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# * il y a 2 disques en RAID soft
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# * le serveur boot en EFI
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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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# grub et le kernel sont réinstallés.
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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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# utilisez "set -e" si vous copiez/collez des bouts de scripts et souhaitez
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# un arrêt en cas d'erreur. Si vous le faites dans le shell de votre session SSH
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# elle s'interrompra !
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# set -e
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if test -d /sys/firmware/efi; then echo 'UEFI'; else echo 'BIOS, fly you fools'; fi
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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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# Stop arrays and destroys partitions
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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/nvme0n1 mklabel gpt
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sleep 1
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# BOOT EFI *mandatory* 100 Mo
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parted -a minimal -s /dev/nvme0n1 mkpart ESP fat32 0M 100M
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sleep 1
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parted -s /dev/nvme0n1 set 1 esp on
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sleep 1
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parted -s /dev/nvme0n1 set 1 boot on
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sleep 1
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mkfs.vfat -F32 /dev/nvme0n1p1 >/dev/null
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sleep 1
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fatlabel /dev/nvme0n1p1 EFI_SYSPART
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sleep 1
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# /boot
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parted -a minimal -s /dev/nvme0n1 mkpart primary ext4 100M 600M
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sleep 1
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parted -s /dev/nvme0n1 set 2 boot on
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sleep 1
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parted -s /dev/nvme0n1 set 2 raid on
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sleep 1
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# /
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parted -a minimal -s /dev/nvme0n1 mkpart primary ext4 600M 1600M
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sleep 1
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parted -s /dev/nvme0n1 set 3 raid on
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sleep 1
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# /usr
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parted -a minimal -s /dev/nvme0n1 mkpart primary ext4 1600M 7600M
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sleep 1
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parted -s /dev/nvme0n1 set 4 raid on
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sleep 1
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# swap
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parted -a minimal -s /dev/nvme0n1 mkpart primary ext4 7600M 17600M
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sleep 1
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# LVM
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parted -a minimal -s /dev/nvme0n1 mkpart primary ext4 17600M 100%
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sleep 1
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parted -s /dev/nvme0n1 set 6 raid on
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sleep 1
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# Copy partitions to second disk
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sgdisk -R=/dev/nvme1n1 /dev/nvme0n1
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sleep 1
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sgdisk -G /dev/nvme1n1
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sleep 1
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partprobe /dev/nvme0n1
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sleep 1
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partprobe /dev/nvme1n1
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sleep 1
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# RAID1 for systems.
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# Metadata 0.90 as some OVH kernel need it to boot.
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for part in {2,3,4,6}; do
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mdadm --create /dev/md${part} --metadata=0.90 --level=raid1 --raid-devices=2 /dev/{nvme0n1p,nvme1n1p}${part}
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done
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sleep 1
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mkfs.ext4 -LROOTFS /dev/md3 >/dev/null
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sleep 1
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mkfs.ext4 -LBOOT /dev/md2 >/dev/null
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sleep 1
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mkfs.ext4 -LUSR /dev/md4 >/dev/null
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sleep 1
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mkswap -f -LSWAP1 /dev/nvme0n1p5
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sleep 1
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mkswap -f -LSWAP2 /dev/nvme1n1p5
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sleep 1
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# Add LVM with a VG for all of the free space.
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pvcreate /dev/md6
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sleep 1
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vgcreate vg0 /dev/md6
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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 -LTMP /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 -LVAR /dev/mapper/vg0-var >/dev/null
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sleep 1
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lvcreate -l 98%FREE --name home vg0
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sleep 1
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mkfs.ext4 -LHOME /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 -LROOTFS rootfs
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mkdir -p rootfs/home && mount -LHOME rootfs/home
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mkdir -p rootfs/var && mount -LVAR rootfs/var
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mkdir -p rootfs/usr && mount -LUSR rootfs/usr
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sleep 1
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rsync -a root_in_ram/home/ rootfs/home/
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rsync -a root_in_ram/var/ rootfs/var/
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rsync -a root_in_ram/usr/ 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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root_in_ram/ rootfs/
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sleep 1
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# Generate fstab.
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cat <<EOT>rootfs/etc/fstab
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LABEL=ROOTFS / ext4 errors=remount-ro 0 1
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LABEL=BOOT /boot ext4 defaults 0 2
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LABEL=EFI_SYSPART /boot/efi vfat defaults 0 2
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LABEL=HOME /home ext4 defaults 0 2
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LABEL=TMP /tmp ext4 defaults 0 2
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LABEL=USR /usr ext4 defaults 0 2
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LABEL=VAR /var ext4 defaults 0 2
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LABEL=SWAP1 none swap sw 0 2
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LABEL=SWAP2 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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rm -rf /mnt/rootfs/boot/*
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sleep 1
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chroot /mnt/rootfs/ bash
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sleep 1
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export LC_ALL=C
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mkdir -p /boot && mount /boot
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mkdir -p /boot/efi && mount /dev/nvme0n1p1 /boot/efi
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mount /tmp
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chmod 1777 /tmp
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sleep 1
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# apt install -y debconf-utils apt-utils
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# sleep 1
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# cat <<EOT>/tmp/grub-selections
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# grub-efi-amd64 grub2/force_efi_extra_removable boolean true
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# grub-efi-amd64 grub2/linux_cmdline_default string quiet
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# grub-efi-amd64 grub2/update_nvram boolean true
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# grub-efi-amd64 grub2/linux_cmdline string
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# grub-pc grub-pc/postrm_purge_boot_grub boolean true
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# EOT
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# sleep 1
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# debconf-set-selections /tmp/grub-selections
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# sleep 1
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# dpkg-reconfigure --frontend=noninteractive grub-pc
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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 }'); do apt purge -y $kernel_pkg; done
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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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# En cas d'erreur à l'install/config de Grub, il faut vérifier si le RAID est OK
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# cat/proc/mdstat
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grub-install /dev/nvme0n1
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sleep 1
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grub-install /dev/nvme1n1
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sleep 1
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apt purge -y os-prober
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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 --frontend=noninteractive grub-efi-amd64
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dpkg-reconfigure grub-efi-amd64
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sleep 1
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# paquets utiles pour evolixisation par Ansible
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apt install -y sudo python python-apt
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sleep 1
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/usr/share/mdadm/mkconf | tee /etc/mdadm.conf /etc/mdadm/mdadm.conf
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exit
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echo "Evolix partitioning done... You can now reboot!"
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