diff options
Diffstat (limited to 'content/docs/gentoo/installation.md')
| -rw-r--r-- | content/docs/gentoo/installation.md | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/content/docs/gentoo/installation.md b/content/docs/gentoo/installation.md new file mode 100644 index 0000000..4f3be17 --- /dev/null +++ b/content/docs/gentoo/installation.md @@ -0,0 +1,231 @@ +--- +title: "Installation" +linkTitle: "installation" +weight: 1 +description: > + Installation of a gentoo system +--- + +## Installation media + +You can get a bootable iso or liveusb from https://www.gentoo.org/downloads/. I recommend the minimal one. To create a bootable usb drive juste use `dd` to copy the image on it. Then boot on this brand new installation media. + +Once you boot on the installation media, you can start sshd and set a temporary password and proceed with the installation more confortably from another machine : + +{{< highlight sh >}} +/etc/init.d/sshd start +passwd +{{< /highlight >}} + +## Partitionning + +There are several options depending on wether you need soft raid, full disk encryption or a simple root device with no additional complications. It will also differ if you are using a virtual machine or a physical one. + +{{< highlight sh >}} +fdisk /dev/sda +g +n +1 +2048 ++2M +t +1 +4 + +n +2 +6144 ++512M +t +2 +1 + +n +3 +1054720 + +w +mkfs.ext4 /dev/sda3 +mkfs.fat -F 32 -n efi-boot /dev/sda2 +mount /dev/sda3 /mnt/gentoo +{{< /highlight >}} + +## Get the stage3 and chroot into it + +Get the stage 3 installation file from https://www.gentoo.org/downloads/. I personnaly use the non-multilib one from the advanced choices, since I am no longer using and 32bits software except steam, and I use steam from a multilib chroot. + +Put the archive on the server in /mnt/gentoo (you can simply wget it from there), then extract it : +{{< highlight sh >}} +tar xpf stage3-*.tar.xz --xattrs-include='*.*' --numeric-owner +mount /dev/sda2 boot +mount -t proc none proc +mount -t sysfs none sys +mount -o rbind /dev dev +cp /etc/resolv.conf etc/ +chroot . +{{< /highlight >}} + +## Initial configuration + +We prepare the local language of the system : +{{< highlight sh >}} +env-update && source /etc/profile +echo 'LANG="en_US.utf8"' > /etc/env.d/02locale +sed '/#en_US.UTF-8/s/#//' -i /etc/locale.gen +locale-gen +source /etc/profile +{{< /highlight >}} + +We set a loop device to hold the portage tree. It will be formatted with optimisation for the many small files that compose it : +{{< highlight sh >}} +mkdir -p /srv/gentoo-distfiles +truncate -s 10G /portage.img +mke2fs -b 1024 -i 2048 -m 0 -O "dir_index" -F /portage.img +tune2fs -c 0 -i 0 /portage.img +mkdir /usr/portage +mount -o loop,noatime,nodev /portage.img /usr/portage/ +{{< /highlight >}} + +We set default compilation options and flags. If you are not me and cannot rsync this location, you can browse it from https://packages.adyxax.org/x86-64/etc/portage/ : +{{< highlight sh >}} +rsync -a --delete packages.adyxax.org:/srv/gentoo-builder/x86-64/etc/portage/ /etc/portage/ +sed -i /etc/portage/make.conf -e s/buildpkg/getbinpkg/ +echo 'PORTAGE_BINHOST="https://packages.adyxax.org/x86-64/packages/"' >> /etc/portage/make.conf +{{< /highlight >}} + +We get the portage tree and sync the timezone +{{< highlight sh >}} +emerge --sync +{{< /highlight >}} + +## Set hostname and timezone + +{{< highlight sh >}} +export HOSTNAME=XXXXX +sed -i /etc/conf.d/hostname -e /hostname=/s/=.*/=\"${HOSTNAME}\"/ +echo "Europe/Paris" > /etc/timezone +emerge --config sys-libs/timezone-data +{{< /highlight >}} + +## Check cpu flags and compatibility + +TODO +{{< highlight sh >}} +emerge cpuid2cpuflags -1q +cpuid2cpuflags +gcc -### -march=native /usr/include/stdlib.h +{{< /highlight >}} + +## Rebuild the system + +{{< highlight sh >}} +emerge --quiet -e @world +emerge --quiet dosfstools app-admin/logrotate app-admin/syslog-ng app-portage/gentoolkit dev-vcs/git bird openvpn htop net-analyzer/tcpdump net-misc/bridge-utils sys-apps/i2c-tools sys-apps/pciutils sys-apps/usbutils sys-boot/grub sys-fs/ncdu sys-process/lsof +{{< /highlight >}} + +## Grab a working kernel + +Next we need to Grab a working kernel from our build server along with its modules. If you don't have one already, you have some work to do! + +Check the necessary hardware support with : +{{< highlight sh >}} +i2cdetect -l +lspci -nnk +lsusb +{{< /highlight >}} + +TODO specific page with details on how to build required modules like the nas for example. +{{< highlight sh >}} +emerge gentoo-sources genkernel -q +... +{{< /highlight >}} + +## Final configuration steps + +### fstab + +{{< highlight sh >}} +# /etc/fstab: static file system information. +# +#<fs> <mountpoint> <type> <opts> <dump/pass> +/dev/vda3 / ext4 noatime 0 1 +/dev/vda2 /boot vfat noatime 1 2 +/portage.img /usr/portage ext2 noatime,nodev,loop 0 0 +{{< /highlight >}} + +### networking +{{< highlight sh >}} +echo 'hostname="phoenix"' > /etc/conf.d/hostname +echo 'dns_domain_lo="adyxax.org" +config_eth0="192.168.1.3 netmask 255.255.255.0" +routes_eth0="default via 192.168.1.1"' > /etc/conf.d/net +cd /etc/init.d +ln -s net.lo net.eth0 +rc-update add net.eth0 boot +{{< /highlight >}} + +### Grub + +TODO especially the conf in /etc/default/grub when using an encrypted / +{{< highlight sh >}} +{{< /highlight >}} + +### /etc/hosts + +{{< highlight sh >}} +scp root@collab-jde.nexen.net:/etc/hosts /etc/ +{{< /highlight >}} + +### root account access + +{{< highlight sh >}} +mkdir -p /root/.ssh +echo 'ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAACAQDN1ha6PFKgxF3MSWUlDaruVVpj3UzoiN4IJEvDrCnDbIW8xu+TclbeGJSRXXBbqRKeUfhX0GDA7cvSUIAz2U7AGK7wq5tbzJKagVYtxcSHBSi6dZR9KGb3eoshnrCeFzem1jWXG02PZJGvjB+ml3QhUguyAqm9q0n/NL6zzKhGoKiELO+tQghGIY8jafRv4rE4yyXZnwuCu8JI9P8ldGhKgOPeOdKIVTIVezUmKILWgAF+Hg7O72rQqUua9sdoK1mEYme/wgu0bQbvN26owGgBAgS3uc2nngLD01TZToG/wC1wH9A3KxT6+3akjRlPfLOY0BuK4OBGEGm6e0KZrIMhUr8fHQ8nmTmBqw7puI0gIXYB2EjhpsQ7TijYVqLYXbyxaXYyqisgY0QRWC7Te5Io6TSgorfXzi7zrcQGgWByHkhxTylf36LYSKWEheIQIRqytOdGqeXagFMz2ptLFKk4dA61LS5fPXIJucdghvnmLPml8cO9/9VHQ7gq7DxQu7sIwt/W13yTTUyI9DSHwxeHUwECzxAb5pOVL6pRjTMH8q1/eAMl35TFSh6s5tGvvHGz9+gMlE9A2Pv8CyXDBmXV6srrwxTSlglnmgdq6c9w3VtBKu572/z0cS6vqZMgEno4rIiwyhqNWdjbMXYw/U0q/w5XC9zCcSuluxvaY14qqQ== adyxax +ssh-rsa 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 hurricane' > /root/.ssh/authorized_keys +passwd +{{< /highlight >}} + +### Add necessary daemons on boot +{{< highlight sh >}} +rc-update add syslog-ng default +rc-update add cronie default +rc-update add sshd default +{{< /highlight >}} + +## TODO + +{{< highlight sh >}} +net-firewall/shorewall +... +rc-update add shorewall default +sed '/PRODUCTS/s/=.*/="shorewall"/' -i /etc/conf.d/shorewall-init +rc-update add shorewall-init boot + +net-analyzer/fail2ban +echo '[sshd] +enabled = true +filter = sshd +ignoreip = 127.0.0.1/8 10.1.0.0/24 37.187.103.36 137.74.173.247 90.85.207.113 +bantime = 3600 +banaction = shorewall +logpath = /var/log/messages +maxretry = 3' > /etc/fail2ban/jail.d/sshd.conf +rc-update add fail2ban default + +app-emulation/docker +/etc/docker/daemon.json +{ "iptables": false } +rc-update add docker default + +app-emulation/lxd +rc-update add lxd default +{{< /highlight >}} + +## References + +- http://blog.siphos.be/2013/04/gentoo-protip-using-buildpkgonly/ +- https://wiki.gentoo.org/wiki/Genkernel +- https://wiki.gentoo.org/wiki/Kernel/Configuration +- https://wiki.gentoo.org/wiki/Kernel +- https://forums.gentoo.org/viewtopic-t-1076024-start-0.html +- https://wiki.gentoo.org/wiki/Binary_package_guide#Setting_up_a_binary_package_host |