Mario Medina MarMed

Read-only FS on Raspberry Pi

Most embedded devices use a read-only root filesystem. This can make them more resilient to unexpected shutdowns that could otherwise cause data corruption. Depending on your application, you might consider your Pi to be an embedded system. This can also help with some issues that can come from SD card unreliability.

Full instructions and explanations are obtained from this link but you can run these commands directly. I modified some of the instructions for personal convenience.

Login with default username and password: (ArchLinux Arm: alarm, alarm, Raspbian: pi, raspberry)

Optionally enable root over SSH. The rest of these instructions assume you are in root.

nano /etc/ssh/sshd_config

	[09/23/2023]

	Refs:
	1. http://os.archlinuxarm.org/os/ArchLinuxARM-aarch64-latest.tar.gz
	2. https://dl-cdn.alpinelinux.org/alpine/v3.18/releases/aarch64/alpine-virt-3.18.0-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

	See also:

	# prerequisites:
	## install software
	apt install mariadb-server libmariadbclient-dev sqlite3
	## install mysqlclient in virtualenv
	su -c 'homeassistant/bin/pip3 install mysqlclient --upgrade' -l homeassistant
	## create database
	mysql -e 'CREATE SCHEMA IF NOT EXISTS `hass_db` DEFAULT CHARACTER SET utf8'
	## create user (use a safe password please)
	mysql -e "CREATE USER 'hass_user'@'localhost' IDENTIFIED BY 'hass_pw'"
	mysql -e "GRANT ALL PRIVILEGES ON hass_db.* TO 'hass_user'@'localhost'"