WIP script Online RAID10 Soft
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Online_Soft_RAID10_NVMEServer.sh
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226
Online_Soft_RAID10_NVMEServer.sh
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#!/bin/bash
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echo "ce script ne doit pas être joué automatiquement"
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echo "les commandes sont à jouer manuellement, par copier/coller"
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exit 1
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# Le script suppose que vous avez installé votre dedibox avec le partionnement par défaut.
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# UEFI p1 fait 6OOM, /boot p2 fait 600M, SWAP p3, / p4.
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# / doit être sur md127. Sinon adapter le script !
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# Enfin un fstab est généré, grub et le kernel sont réinstallés.
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ROOT_PART=/dev/md127
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export LC_ALL=C
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# disable swap
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swapoff -a
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cd /mnt
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# mount /
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mkdir root_in_ram rootfs home var usr log
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mount $ROOT_PART /mnt/rootfs/
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# copy all the filesystem in ram
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mount -t tmpfs none /mnt/root_in_ram -o size=90%
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rsync -a /mnt/rootfs/ /mnt/root_in_ram/
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# unount rootfs to recreate partitions
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umount /mnt/rootfs
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# stop soft raid
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mdadm --stop /dev/md{125..127}
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# Wipe all signatures
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for i in /dev/nvme?n?p?; do wipefs -a $i; done
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# NOTE: sleep 1 second between each command
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# to be able to copy/paste the whole bloc
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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,esp GPT/UEFI *mandatory*
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parted -a minimal -s /dev/nvme0n1 mkpart primary 0M 100M
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sleep 1
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parted -s /dev/nvme0n1 set 1 boot on
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parted -s /dev/nvme0n1 set 1 esp on
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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 500M
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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 500M 1000M
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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 1000M 7000M
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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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# swap1
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parted -a minimal -s /dev/nvme0n1 mkpart primary linux-swap 8000M 18000M
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sleep 1
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# LVM
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parted -a minimal -s /dev/nvme0n1 mkpart primary ext4 18000M 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 parts to nvme1n1
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for i in /dev/nvme[123]n1; do
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sgdisk -R=${i} /dev/nvme0n1
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sgdisk -G $i
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partprobe $i
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done
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# RAID10 for systems.
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for part in {2,3,4,6}; do
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mdadm --create /dev/md${part} --metadata=1.2 --level=raid10 --raid-devices=4 \
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/dev/{nvme0n1p${part},nvme1n1p${part},nvme2n1p${part},nvme3n1p${part}}
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done
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# Make filesystems
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l=1
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for i in /dev/nvme?n1p[5]; do
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mkswap -f -LSWAP${l} $i 1>/dev/null
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l=$((l+1))
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done
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apt install dosfstools
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for i in /dev/nvme?n1p[1]; do
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mkfs.vfat $i 1>/dev/null
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done
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mkfs.ext4 -LROOTFS /dev/md3 >/dev/null
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sleep 1
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mkfs.ext4 -LBOOT /dev/md2 >/dev/null
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sleep 1
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mkfs.ext4 -LUSR /dev/md4 >/dev/null
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sleep 1
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l=1
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for i in /dev/nvme?n1p[5]; do
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mkswap -f -LSWAP${l} $i 1>/dev/null
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l=$((l+1))
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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 -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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### Pour un serveur normal
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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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### Pour un KVM
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lvcreate --size 50G --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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lvcreate -l 98%FREE --name srv vg0
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sleep 1
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mkfs.ext4 -LSRV /dev/mapper/vg0-srv >/dev/null
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sleep 1
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###############
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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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# mount partitions
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mount -LROOTFS rootfs
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mount -LHOME home
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mount -LVAR var
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mount -LUSR usr
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# Copy data from RAM.
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rsync -a root_in_ram/home/ home/
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rsync -a root_in_ram/var/ var/
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rsync -a root_in_ram/usr/ 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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umount home var usr
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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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/dev/nvme0n1p1 /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 0
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LABEL=SWAP2 none swap sw 0 0
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LABEL=SWAP3 none swap sw 0 0
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LABEL=SWAP4 none swap sw 0 0
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EOT
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# Chroot + 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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rm -rf /mnt/rootfs/boot/*
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chroot /mnt/rootfs/ bash
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export LC_ALL=C
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mount /boot
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mount /boot/efi
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mount /usr
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mount /var
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mount /tmp
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chmod 1777 /tmp
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# generate RAID configuration
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/usr/share/mdadm/mkconf > /etc/mdadm/mdadm.conf
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# purge des paquets de Grub et du noyau, pour réinitialiser complètement les config
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apt purge -y grub-common grub-efi-amd64 grub-efi-amd64-bin grub2-common
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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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# réinstallation des paquets
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# Note: bien installer Grub sur les 4 disques nvme[0123]n1
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apt install -y grub-common grub-efi grub-efi-amd64 grub-efi-amd64-bin grub2-common linux-image-amd64
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grub-install /dev/nvme0n1
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update-grub
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dpkg-reconfigure grub-efi-amd64
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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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# ajouter l'utilisateur dans le groupe sudo
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# ça facilite le passage d'Ansible (sans root)
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usermod -a -G sudo jlecour
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passwd jlecour
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# change root password
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passwd
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# permit root login via SSH with password
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sed -i 's/#PermitRootLogin prohibit-password/PermitRootLogin yes/' /etc/ssh/sshd_config
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exit
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echo "Evolix partitioning done... You can now reboot!"
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