twheel · September 28, 2015 13:36 · Sep 28, 2015
diff --git a/install-arch.txt b/install-arch.txt
@@ -0,0 +1,119 @@
+Protocol that worked to install Arch on a remote server
+
+Situation: host provides CentOS image but not one for Arch.
+Default CentOS install includes two hard drives in a RAID 1 setup, mapped as /dev/mapper/vg-root and /dev/mapper/vg-swap
+
+Guides:
+https://wiki.archlinux.org/index.php/Remote_installation
+https://wiki.archlinux.org/index.php/Install_from_existing_Linux
+https://wiki.archlinux.org/index.php/Install_from_SSH
+http://ordinatechnic.com/os-specific-guides/arch/archlinux-installing-from-an-existing-linux-installation
+
+(Replace MY_HOSTNAME, MY_IP_ADDRESS, MY_DOMAIN, MY_NAMESERVER1, MY_NAMESERVER2, MY_NETWORK_NAME below with correct values.)
+
+CentOS:
+	swapoff /dev/mapper/vg-swap
+	fdisk /dev/mapper/vg-swap
+	mke2fs -j /dev/mapper/vg-swap
+	yum -y install rng-tools
+	rngd -r /dev/urandom
+	cd /tmp
+	curl -O https://mirrors.kernel.org/archlinux/iso/latest/archlinux-bootstrap-2015.09.01-x86_64.tar.gz
+	tar xzf archlinux-bootstrap-2015.09.01-x86_64.tar.gz
+	cd root.x86_64
+	vi etc/pacman.d/mirrorlist
+	/bin/cp -f /etc/resolv.conf etc
+	mount -t proc /proc proc
+	mount --rbind /sys sys
+	mount --rbind /dev dev
+	chroot /tmp/root.x86_64 /bin/bash
+
+First chroot:
+	pacman-key --init
+	pacman-key --populate archlinux
+	pacman -Syyu
+	pacman -S base
+	mkdir /mnt/arch
+	mount /dev/mapper/vg-swap /mnt/arch
+	pacstrap /mnt/arch base
+	genfstab -p /mnt/arch/ >> /mnt/arch/etc/fstab 
+	arch-chroot /mnt/arch/
+
+Second chroot:
+	passwd 
+	pacman -S grub
+	echo MY_HOSTNAME > /etc/hostname
+	ln -sf /usr/share/zoneinfo/America/New_York /etc/localtime
+	sed -i 's/#en_US/en_US/' /etc/locale.gen
+	locale-gen 
+	echo LANG=en_US > /etc/locale.conf
+	vi /etc/mkinitcpio.conf
+		Add the dm_mod and raid1 modules to the MODULES list
+		Add the mdadm_udev and lvm2 hooks to the HOOKS list after udev
+		(or mdadm instead of mdadm_udev)
+	mkinitcpio -p linux
+	sed -i 's/use_lvmetad = 1/use_lvmetad = 0/' /etc/lvm/lvm.conf
+	grub-install --target=i386-pc --recheck /dev/sda
+	grub-install --target=i386-pc --recheck /dev/sdb
+	grub-mkconfig -o /boot/grub/grub.cfg
+	pacman -S openssh
+	systemctl enable sshd
+	vi /etc/ssh/sshd_config
+		PermitRootLogin yes # (For now)
+	vi /etc/systemd/network/MY_HOSTNAME.network
+		[Match]
+		Name=MY_NETWORK_NAME
+
+		[Network]
+		Address=MY_IP_ADDRESS
+		DHCP=ipv4
+	vi /etc/resolv.conf
+		search MY_DOMAIN
+		nameserver MY_NAMESERVER1
+		nameserver MY_NAMESERVER2
+	systemctl enable systemd-networkd
+	mdadm --detail --scan >> /etc/mdadm.conf
+	cat /etc/mdadm.conf # make sure it looks OK
+	exit
+
+First chroot:
+	exit
+
+CentOS:
+	reboot
+
+Booted into Arch with /dev/mapper/vg-swap as /
+	mkfs.ext4 /dev/mapper/vg-root
+	mkdir /mnt/newsys
+	mount -t ext4 /dev/mapper/vg-root /mnt/newsys
+	cp -a /boot /etc /home /opt /root /srv /usr /var /mnt/newsys
+	cd /mnt/newsys
+	ln -s usr/bin bin
+	ln -s usr/bin sbin
+	ln -s usr/lib lib
+	ln -s usr/lib lib64
+	mkdir proc sys dev run
+	mkdir -m 1777 -p tmp
+	mount -t proc /proc proc
+	mount --rbind /sys sys
+	mount --rbind /dev dev
+	mount --rbind /run run
+	pacman -S arch-install-scripts
+	genfstab -p /mnt/newsys/ > /mnt/newsys/etc/fstab 
+	# arch-chroot /mnt/newsys/
+	chroot /mnt/newsys /bin/bash
+
+From chroot:
+	grub-install --target=i386-pc --recheck /dev/sda
+	grub-install --target=i386-pc --recheck /dev/sdb
+	grub-mkconfig -o /boot/grub/grub.cfg
+	exit
+
+From Arch:
+	reboot
+
+After reboot:
+	mkswap /dev/mapper/vg-swap
+	swapon /dev/mapper/vg-swap
+	Add /dev/mapper/vg-swap to /etc/fstab
+	Configure server...