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Replace Oracle Cloud Linux with Arch Linux ARM remotely
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| Refs: | |
| 1. http://os.archlinuxarm.org/os/ArchLinuxARM-aarch64-latest.tar.gz | |
| 2. https://dl-cdn.alpinelinux.org/alpine/v3.13/releases/aarch64/alpine-virt-3.13.5-aarch64.iso | |
| 3. https://wiki.alpinelinux.org/wiki/Replacing_non-Alpine_Linux_with_Alpine_remotely | |
| 4. https://wiki.archlinux.org/index.php/installation_guide#Configure_the_system | |
| 5. https://archlinuxarm.org/platforms/armv8/generic | |
| Requirement: | |
| Console access. | |
| 1. In Oracle Linux 8.0 | |
| cd /tmp | |
| wget https://dl-cdn.alpinelinux.org/alpine/v3.13/releases/aarch64/alpine-virt-3.13.5-aarch64.iso | |
| dd if=alpine-virt-3.13.5-aarch64.iso of=/dev/sda | |
| sync | |
| reboot | |
| 2. In Alpine w/ Console access: | |
| # [Bring up networking] | |
| vi /etc/network/interfaces, add: | |
| auto eth0 | |
| iface eth0 inet dhcp | |
| ifup eth0 | |
| # [Setup SSH] | |
| setup-sshd | |
| adduser tempuser | |
| passwd tempuser | |
| # [At this point it's easier to use SSH to copy & paste] | |
| # [Per Ref #3] | |
| mkdir /media/setup | |
| cp -a /media/sda/* /media/setup | |
| mkdir /lib/setup | |
| cp -a /.modloop/* /lib/setup | |
| /etc/init.d/modloop stop | |
| umount /dev/sda | |
| mv /media/setup/* /media/sda/ | |
| mv /lib/setup/* /.modloop/ | |
| # [Setup apk and bring in pacman] | |
| setup-apkrepos | |
| vi /etc/apk/repositories, enable community | |
| apk update | |
| apk add dosfstools e2fsprogs libarchive-tools pacman arch-install-scripts | |
| # [Disk partitioning & mounting] | |
| fdisk /dev/sda(use gpt table, set esp partition 15 size 512M), set root partition 1 size remaining) | |
| mkfs.vfat /dev/sda15 | |
| mkfs.ext4 /dev/sda1 | |
| mount /dev/sda1 /mnt | |
| mkdir -p /mnt/boot/efi | |
| mount /dev/sda15 /mnt/boot/efi | |
| cd /mnt | |
| wget http://os.archlinuxarm.org/os/ArchLinuxARM-aarch64-latest.tar.gz | |
| bsdtar -xpf /mnt/ArchLinuxARM-aarch64-latest.tar.gz -C /mnt | |
| genfstab -U /mnt >> /mnt/etc/fstab | |
| arch-chroot /mnt/ | |
| pacman-key --init | |
| pacman-key --populate archlinuxarm | |
| # [EFI boot] | |
| pacman -Syu grub efibootmgr | |
| grub-install --efi-directory=/boot/efi --bootloader-id=GRUB | |
| # [grub config] | |
| grub-mkconfig -o /boot/grub/grub.cfg | |
| # [workaround: grub of alarm doesn't detect linux] | |
| echo "linux (hd0,gpt1)/boot/Image.gz root=/dev/sda1" >> /boot/grub/grub.cfg | |
| echo "initrd (hd0,gpt1)/boot/initramfs-linux.img" >> /boot/grub/grub.cfg | |
| echo boot >> /boot/grub/grub.cfg | |
| vi /etc/ssh/sshd_config and update to "PasswordAuthentication no" | |
| change to user 'alarm', create ~/.ssh and ~/.ssh/authorized_keys | |
| At this point you should be able to issue 'reboot' and use ssh keyless login to remote into new alarm system. |
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