Gentoo install

Using Hetzner ax41-nvme

Specs:

AMD Ryzen 5 3600 Hexa-Core
RAM: 64 GB DDR4
Disk: 2 x 512 GB NVMe SSD  (software-RAID 1)
Connection: 1 GBit/s port
Guaranteed bandwidth: 1 GBit/s
Cost: € 40.46

The most important part, the neofetch once booted:

$ neofetch
         -/oyddmdhs+:.                bl@bl-dev
     -odNMMMMMMMMNNmhy+-`             ---------
   -yNMMMMMMMMMMMNNNmmdhy+-           OS: Gentoo/Linux x86_64
 `omMMMMMMMMMMMMNmdmmmmddhhy/`        Kernel: 5.15.23-gentoo-x86_64
 omMMMMMMMMMMMNhhyyyohmdddhhhdo`      Uptime: 2 days, 4 hours, 40 mins
.ydMMMMMMMMMMdhs++so/smdddhhhhdm+`    Packages: 374 (emerge)
 oyhdmNMMMMMMMNdyooydmddddhhhhyhNd.   Shell: zsh 5.8
  :oyhhdNNMMMMMMMNNNmmdddhhhhhyymMh   Terminal: /dev/pts/0
    .:+sydNMMMMMNNNmmmdddhhhhhhmMmy   CPU: AMD Ryzen 5 3600 (12) @ 3.600GHz
       /mMMMMMMNNNmmmdddhhhhhmMNhs:   GPU: NVIDIA GeForce GT 710
    `oNMMMMMMMNNNmmmddddhhdmMNhs+`    Memory: 974MiB / 64241MiB
  `sNMMMMMMMMNNNmmmdddddmNMmhs/.
 /NMMMMMMMMNNNNmmmdddmNMNdso:`
+MMMMMMMNNNNNmmmmdmNMNdso/-
yMMNNNNNNNmmmmmNNMmhs+/-`
/hMMNNNNNNNNMNdhs++/-`
`/ohdmmddhys+++/:.`
  `-//////:--.

Getting started

• Boot to rescue
• SSH to the host.
• Suggest to use screen, incase you get disconnected while you are chrooted.
• Depending on the prior configuration, you may need to remove software raid.
• This is not for the systemd install

Create partitions

nvme0

parted -a optimal /dev/nvme0n1
mklabel gpt
-> yes
unit MiB
mkpart primary 2 100
set 1 bios_grub on
mkpart primary 512 1024
mkpart primary linux-swap(v1) 1024 17408
mkpart primary 17408 -1
set 2 raid on
set 4 raid on
p

nvme 1

parted -a optimal /dev/nvme1n1
mklabel gpt
-> yes
unit MiB
mkpart primary 2 100
set 1 bios_grub on
mkpart primary 512 1024
mkpart primary linux-swap(v1) 1024 17408
mkpart primary 17408 -1
set 2 raid on
set 4 raid on
p

confirm

root@rescue ~ # lsblk
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
loop0         7:0    0     3G  1 loop
nvme0n1     259:0    0 476.9G  0 disk
├─nvme0n1p1 259:6    0    98M  0 part
├─nvme0n1p2 259:7    0   512M  0 part
├─nvme0n1p3 259:8    0    16G  0 part
└─nvme0n1p4 259:9    0 459.9G  0 part
nvme1n1     259:4    0 476.9G  0 disk
├─nvme1n1p1 259:10   0    98M  0 part
├─nvme1n1p2 259:11   0   512M  0 part
├─nvme1n1p3 259:12   0    16G  0 part
└─nvme1n1p4 259:13   0 459.9G  0 part

Create raid

mdadm --create /dev/md0 --level=1 --raid-devices=2 --metadata=0.90 /dev/nvme0n1p1 /dev/nvme1n1p1
mdadm --create /dev/md1 --level=1 --raid-devices=2 --metadata=0.90 /dev/nvme1n1p2 /dev/nvme0n1p2
mdadm --create /dev/md2 --level=1 --raid-devices=2 /dev/nvme1n1p4 /dev/nvme0n1p4

Make filesystems

mkfs.ext2 /dev/md0
mkfs.ext4 /dev/md1
mkswap /dev/nvme0n1p3 && mkswap /dev/nvme1n1p3
swapon -p 1 /dev/nvme0n1p3 && swapon -p 1 /dev/nvme1n1p3
mkfs.ext4 /dev/md2

Confirm

root@rescue ~ # lsblk
NAME        MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINT
loop0         7:0    0     3G  1 loop
nvme0n1     259:0    0 476.9G  0 disk
├─nvme0n1p1 259:6    0    98M  0 part
│ └─md0       9:0    0  97.9M  0 raid1
├─nvme0n1p2 259:7    0   512M  0 part
│ └─md1       9:1    0 511.9M  0 raid1
├─nvme0n1p3 259:8    0    16G  0 part  [SWAP]
└─nvme0n1p4 259:9    0 459.9G  0 part
  └─md2       9:2    0 459.8G  0 raid1
nvme1n1     259:4    0 476.9G  0 disk
├─nvme1n1p1 259:10   0    98M  0 part
│ └─md0       9:0    0  97.9M  0 raid1
├─nvme1n1p2 259:11   0   512M  0 part
│ └─md1       9:1    0 511.9M  0 raid1
├─nvme1n1p3 259:12   0    16G  0 part  [SWAP]
└─nvme1n1p4 259:13   0 459.9G  0 part
  └─md2       9:2    0 459.8G  0 raid1
  ```

  ## Mount Disks

mkdir /mnt/gentoo mount /dev/md3 /mnt/gentoo/ mkdir /mnt/gentoo/boot mount /dev/md1 /mnt/gentoo/boot/ cd /mnt/gentoo/

## Get the tar and chroot

wget https://bouncer.gentoo.org/fetch/root/all/releases/amd64/autobuilds/20220206T170533Z/stage3-amd64-openrc-20220206T170533Z.tar.xz tar xpvf stage3-.tar.xz --xattrs-include='.*' --numeric-owner

cp --dereference /etc/resolv.conf /mnt/gentoo/etc/ mount --types proc /proc /mnt/gentoo/proc mount --rbind /sys /mnt/gentoo/sys mount --make-rslave /mnt/gentoo/sys mount --rbind /dev /mnt/gentoo/dev mount --make-rslave /mnt/gentoo/dev mount --bind /run /mnt/gentoo/run mount --make-slave /mnt/gentoo/run chroot /mnt/gentoo /bin/bash source /etc/profile export PS1="(chroot) ${PS1}"

## Install install

mkdir /etc/portage/repos.conf cp /usr/share/portage/config/repos.conf /etc/portage/repos.conf/gentoo.conf emerge-webrsync echo 'MAKEOPTS="-j13"' >> /etc/portage/make.conf sed -i 's/^COMMON_FLAGS./COMMON_FLAGS="-march=native -O2 -pipe"/g' /etc/portage/make.conf emerge --sync emerge --ask --verbose --update --deep --newuse @world emerge vim emerge htop emerge mdadm emerge sudo

### Edit fstab:

/dev/md0 /boot ext2 noauto,noatime 1 2 /dev/md1 / ext4 noatime 0 1 /dev/nvme0n1p3 none swap sw,pri=1 0 0 /dev/nvme1n1p3 none swap sw,pri=1 0 0

### Keep it goin
Set the locale, ensure mdadm has the new fstab info, set timezone

echo 'LANG="en_US.utf8"' >> /etc/locale.conf locale-gen mdadm --detail --scan >> /etc/mdadm.conf echo "Asia/Tokyo" > /etc/timezone emerge --config sys-libs/timezone-data nano -w /etc/locale.gen en_US.UTF-8 UTF-8 eselect locale list eselect locale set 4 env-update && source /etc/profile ACCEPT_LICENSE=""

## Kernel
Emerge the kernel, grub, and some utils

emerge sys-kernel/linux-firmware sys-kernel/genkernel gentoo-sources nload iftop grub dev-vcs/git sed -i 's/.MICROCODE=./MICROCODE="yes"/' /etc/genkernel.conf sed -i 's/.SSH=./SSH="yes"/' /etc/genkernel.conf sed -i 's/.BUSYBOX=./BUSYBOX="yes"/' /etc/genkernel.conf sed -i 's/.MDADM=./MDADM="yes"/' /etc/genkernel.conf sed -i 's/.E2FSPROGS=./E2FSPROGS="yes"/' /etc/genkernel.conf

Not sure if this a bug when having ssh enabled in the kernel, more to follow, but I had to add a ssh key to ``/etc/dropbear/authorized_keys`` otherwise I got an error saying sshkeys are missing. After that, generate the kernel. Grab a coffee or two (~20 min on this system).

genkernel all

## Install bootloader and run it

grub-install /dev/nvme1n1 grub-install /dev/nvme0n1 grub-mkconfig -o /boot/grub/grub.cfg

Included the snipped of successful run. Keeping it as important for successful booting. 

rescue /etc/init.d # grub-install /dev/nvme1n1 Installing for i386-pc platform. Installation finished. No error reported. rescue /etc/init.d # grub-install /dev/nvme0n1 Installing for i386-pc platform. Installation finished. No error reported. rescue /etc/init.d # grub-mkconfig -o /boot/grub/grub.cfg Generating grub configuration file ... Found linux image: /boot/vmlinuz-5.15.23-gentoo-x86_64 Found initrd image: /boot/initramfs-5.15.23-gentoo-x86_64.img Warning: os-prober will not be executed to detect other bootable partitions. Systems on them will not be added to the GRUB boot configuration. Check GRUB_DISABLE_OS_PROBER documentation entry. done

## Last stuff
Core utils for me

rc-service add sshd default useradd bl usermod -aG wheel bl mkhomedir_helper bl passwd bl -> supersecretpw visudo -> uncomment wheel to have sudo perms ```

Thats it.