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Size: 2205
Comment: purge all the things!
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Size: 2792
Comment: some read-only work
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| Deletions are marked like this. | Additions are marked like this. |
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| * Make the filesystems read-only, or at least /boot can be * refer to this: https://medium.com/@andreas.schallwig/how-to-make-your-raspberry-pi-file-system-read-only-raspbian-stretch-80c0f7be7353 * triggerhappy * `apt purge` |
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| undo this: usermod -a -G spi,i2c,gpio,video mopidy as root: pip uninstall mopidy-youtube Mopidy-PiDi Mopidy-Local mopidy-raspberry-gpio |
for i in spi i2c gpio video ; do deluser mopidy $i ; done # as root: pip3 uninstall mopidy-youtube Mopidy-PiDi Mopidy-Local mopidy-raspberry-gpio pip3 uninstall mopidy_autoplay mopidy_mobile mopidy_muse musicbrainzngs |
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| rm -rf /var/lib/mopidy # Mark gstreamer plugins to be kept now that mopidy is gone apt install gir1.2-gst-plugins-base-1.0 gir1.2-gstreamer-1.0 gstreamer1.0-alsa \ gstreamer1.0-plugins-good gstreamer1.0-plugins-ugly gstreamer1.0-pulseaudio \ gstreamer1.0-x python3-gst-1.0 |
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| remove from apt-key | apt-key del 271D2943 |
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== Read only system == Make the filesystems read-only, as much as possible. Refer to this: https://medium.com/@andreas.schallwig/how-to-make-your-raspberry-pi-file-system-read-only-raspbian-stretch-80c0f7be7353 {{{ apt purge triggerhappy systemctl disable console-setup apt purge logrotate apt install busybox-syslogd apt purge rsyslog systemctl stop dphys-swapfile.service apt purge dphys-swapfile apt autoremove -y }}} |
makarov
- RPi Zero W
- RPi OS buster Lite (based on Debian 10.10)
Linux makarov 5.10.17+ #1421 Thu May 27 13:58:02 BST 2021 armv6l GNU/Linux
- Located wherever I take it
network
Static DHCP assignment in IOT VLAN, it should have minimal access privileges, it literally only needs web access. No IPv6 apart from usual linklocal stuff.
services
- SSH
- Some avahi junk I should probably disable
apps
muzak systemd unit plays music, running as the pi user
frontpanel systemd unit manages the LCD and button inputs
Muzak app
Runs mpv with a playlist of Youtube links, super basic. Audio goes out through an I2S soundcard. Playlist loops forever as you'd expect. Playlist and extra stuff is in /home/pi
Frontpanel app
A python script with some basic GPIO interfacing, controls mpv by talking to its JSON-IPC socket. Displays images and UI on the LCD screen.
Optimisation
Aim to disable as much stuff as possible, to reduce CPU load and boot times.
Try to disable:
- bluetooth
dtoverlay=disable-bt in config.txt
systemctl disable hciuart --now
systemctl disable bluetooth
reboot then apt purge bluez bluez-firmware
- apt-daily-upgrade
echo 'APT::Periodic::Enable "0";' > /etc/apt/apt.conf.d/10periodic
apt purge modemmanager
apt autoremove -y
- avahi-daemon.service
systemctl disable avahi-daemon.service --now
Does this work? systemctl disable avahi-daemon.socket
- dhcpcd
add noarp to the config to make it boot faster
Remove the Mopidy stuff that I installed
systemctl disable mopidy --now for i in spi i2c gpio video ; do deluser mopidy $i ; done # as root: pip3 uninstall mopidy-youtube Mopidy-PiDi Mopidy-Local mopidy-raspberry-gpio pip3 uninstall mopidy_autoplay mopidy_mobile mopidy_muse musicbrainzngs apt purge mopidy rm -rf /var/lib/mopidy # Mark gstreamer plugins to be kept now that mopidy is gone apt install gir1.2-gst-plugins-base-1.0 gir1.2-gstreamer-1.0 gstreamer1.0-alsa \ gstreamer1.0-plugins-good gstreamer1.0-plugins-ugly gstreamer1.0-pulseaudio \ gstreamer1.0-x python3-gst-1.0 rm /etc/apt/sources.list.d/mopidy.list apt-key del 271D2943
Read only system
Make the filesystems read-only, as much as possible. Refer to this: https://medium.com/@andreas.schallwig/how-to-make-your-raspberry-pi-file-system-read-only-raspbian-stretch-80c0f7be7353
apt purge triggerhappy systemctl disable console-setup apt purge logrotate apt install busybox-syslogd apt purge rsyslog systemctl stop dphys-swapfile.service apt purge dphys-swapfile apt autoremove -y