Introduction
Arch Linux is a distribution known for its KISS philosophy and its continuous release model. In the ARM platform, this same flexibility translates into a light and fully customizable system for embedded devices.
Why choose Arch Linux ARM?
The main advantage is the total control it offers to the user. From the kernel to the user packages, everything is compiled or installed exactly as desired, which allows to optimize performance according to the specific hardware.
Hardware compatible
Arch Linux ARM supports a wide range of plates. Among the most popular are the Raspberry Pi (all models), Odroid C2, Odroid XU4, Pine64 RockPro64 and the Allwinner A64-based plates.
Official image download
The pre-built images for each platform are found on the Arch Linux ARM download page. It is recommended to check the SHA256 checksum before writing on the SD card or eMMC.
Preparation of the storage medium
Use a tool likeddin Linux orBalenaEtcherin Windows / macOS to copy the image to the card. The typical command isdd if=archlinuxarm-*.img of=/dev/sdX bs=4M status=progress conv=fsync.
First start and basic configuration
Insert the card into the plate and connect power supply. The system will start in console mode. The default user isrootwithout password; must be changed immediately withpasswd.
System update
Once inside, runpacman -Syuto synchronize the repositories and apply all available updates. This step ensures you have the most recent and secure packages.
Time and locale zone configuration
Edit the file/etc/locale.genand discomments the line corresponding to your language, for examplees_ES.UTF-8 UTF-8. Then runlocale-genand sets the variableLANGin/etc/locale.conf.
Creating a standard user
To avoid working constantly as root, add a user withuseradd -m -G wheel -s /bin/bash tu_usuarioand assign a password. Then enable the use ofsudoediting/etc/sudoerswithvisudo.
Installation of a light graphic environment
In plates with limited resources, options such asXfce, LXQtor even a window manager likei3They're ideal. Install them withpacman -S xfce4 xfce4-goodiesand enables the display managerlightdm.
Performance optimization
To squeeze the maximum performance, consider compiling the kernel with specific options for your SoC. In addition, he adjusts the governor of the CPU bycpupowerand useszramto compress the swap memory in RAM.
Network configuration and essential services
To connect the plate to your network, edit/etc/systemd/network/20-wired.networkfor wired or used interfacesnetctlfor Wi-Fi connections. Then enable and startsystemd-networkdandsystemd-resolvedwithsystemctl enable --now systemd-networkd systemd-resolved. Installopensshfor remote and active access to the servicesshdto work comfortably from another machine.
Container use with Docker and Podman
Although Docker is not officially supported on all ARM platforms, you can install the versiondocker-cefrom the official repository or usepodman, which is fully compatible and does not require daemon. Runpacman -S podmanand starts running images withpodman run -it alpine sh
For light orchestration, considerdocker-composeorpodman-composeaccording to your preference.
Kernel updates and custom modules
The Arch Linux ARM kernel is kept in the packagelinux-armv7orlinux-armv8according to architecture. To compile a custom kernel, installbase-develandgit, clone the official tree fromhttps://github.com/archlinuxarm/linux, adjust the configuration withmake menuconfigand compiles usingmake -j$(nproc). The resulting modules are installed withmake modules_installand are charged bymodprobe.
Monitoring, registration and diagnostic tools
To monitor the use of CPU, memory and disk, installhtop, iotopandncdu. These programs offer real-time views and allow you to quickly identify bottlenecks. The default registration system issystemd-journald; you can check the login withjournalctl -xeand filter by service or time. If you prefer a more traditional approach, enablersyslogand breaks the files withlogrotate. Finally, consider usingnetdataorPrometheuswith no exporter to obtain visible metrics on a web panel. In addition, you can set alerts bysystemdtimers that run verification scripts and send notifications by email or Telegram when certain temperature or load thresholds are exceeded. These tools allow you to keep the system under control and anticipate failures before they affect performance.
Conclusion
Arch Linux ARM provides a powerful and flexible platform for developers, fans and professionals who want a custom operating system in ARM hardware. Following the steps described, you can have a stable, safe and fully adapted system to your needs.
