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----
-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 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 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