Monitoring Dashboard with Ubuntu 26.04

script/monitor/DASHBOARD_with_Ubuntu_24.04.md

@@ -23,8 +23,8 @@ timedatectl set-timezone Europe/Berlin
 ```sh
 apt install ubuntu-desktop-minimal
 apt install language-pack-gnome-de
-apt install xdotool
 apt install dbus-x11
+apt install xdotool
 ```
 
 
@@ -92,7 +92,7 @@ Environment=DISPLAY=:0
 Environment=LANG=de_DE.UTF-8
 Type=simple
 # Always a fresh firefox ('-' allow error if common does not exist)
-ExecStartPre=-/usr/bin/rm -r /home/kiosk/snap/firefox/common
+ExecStartPre=-/usr/bin/rm -rf /home/kiosk/snap/firefox/common
 # Move Mouse (should also work on small screens), needs 'apt install dbus-x11'
 ExecStartPre=/usr/bin/xdotool mousemove 4096 2160
 # See: https://wiki.mozilla.org/Firefox/CommandLineOptions (just -kiosk URL => Start-Assistant, so use -url too)
@@ -120,7 +120,32 @@ reboot
 Troubleshouting
 ---------------
 
-```
+```sh
-systemctl disable pd-mapper.service
+# No cloud-init
 apt purge cloud-init -y && apt autoremove --purge -y
+
+# If exists and fails:
+systemctl disable pd-mapper.service
+
+# If firefox should be installed via apt:
+snap remove firefox
+
+curl -o /etc/apt/keyrings/packages.mozilla.org.asc https://packages.mozilla.org/apt/repo-signing-key.gpg
+
+echo '
+Types: deb
+URIs: https://packages.mozilla.org/apt
+Suites: mozilla
+Components: main
+Signed-By: /etc/apt/keyrings/packages.mozilla.org.asc
+' | sudo tee /etc/apt/sources.list.d/mozilla.sources
+
+echo '
+Package: *
+Pin: origin packages.mozilla.org
+Pin-Priority: 1000
+' | sudo tee /etc/apt/preferences.d/mozilla
+
+apt update
+apt install firefox
 ```

script/monitor/DASHBOARD_with_Ubuntu_26.04.md

@@ -0,0 +1,203 @@
+
+How to setup a monitoring dashboard
+===================================
+
+Inspired by: https://pimylifeup.com/ubuntu-chromium-kiosk/
+
+Steps
+-----
+
+
+
+### 1.) Install Ubuntu Server (no desktop) on your computer than set hostname and timezone.
+
+```sh
+hostnamectl set-hostname check.local
+timedatectl set-timezone Europe/Berlin
+```
+
+
+
+### 2.) Install minimal GUI and Tools.
+
+```sh
+apt install ubuntu-desktop-minimal
+apt install language-pack-gnome-de
+apt install dbus-x11
+apt install ydotool
+```
+
+
+
+### 3.) Create a kiosk user with home-directory.
+
+```sh
+useradd -m kiosk
+```
+
+and disable Welocme-Screen
+```sh
+echo "yes" > /home/kiosk/.config/gnome-initial-setup-done
+```
+
+
+
+### 4.) Edit following file `nano /etc/gdm3/custom.conf` to turn on autologin for user 'kiosk'.
+
+```
+[daemon]
+# Uncomment the line below to force the login screen to use Xorg
+#WaylandEnable=false
+
+# Enabling automatic login
+#  AutomaticLoginEnable = true
+#  AutomaticLogin = user1
+
+AutomaticLoginEnable = true
+AutomaticLogin = kiosk
+```
+
+
+
+### 5.) Configure GUI of user kiosk to prevent monitor from sleeping
+
+```sh
+#gsettings list-recursively
+
+# Does not work
+#sudo -u kiosk gsettings set org.gnome.desktop.session idle-delay 0
+
+# Set idle-delay from "uint32 300" to "uint32 0", needs 'apt install dbus-x11'
+# You can check the value in "GUI-Session of kiosk -> Settings -> Power"
+sudo -u kiosk dbus-launch dconf write /org/gnome/desktop/session/idle-delay "uint32 0"
+```
+
+
+
+### 6.) Create custom script in home of kiosk to be started via autostart in the desktop environment.
+
+Therefore open the executable script file `/home/kiosk/kiosk-loop.sh`:
+
+```sh
+touch /home/kiosk/kiosk-loop.sh
+chmod +x /home/kiosk/kiosk-loop.sh
+nano /home/kiosk/kiosk-loop.sh
+```
+
+Paste the following content into the opened file:
+```
+#!/bin/bash
+
+# Wait until desktop loaded completely.
+sleep 5
+
+while true; do
+
+    # Background process waiting until Firefox is open to move the mouse pointer away.
+    (sleep 10 && ydotool mousemove 4096 2160) &
+
+    # Always a fresh firefox on each start
+    rm -rf /home/kiosk/snap/firefox/common
+
+    # Starts Firefox in mode kiosk. (The instruction pointer keeps moving after Firefox has closed.)
+    snap run firefox -fullscreen -kiosk -url http://monitor.everbrent.net/check.html
+
+    # In case of a crash wait 5 seconds and restart
+    sleep 5
+done
+```
+
+
+
+### 7.) Enable script launch unsing autostart
+
+Therefore open the configuration file `/home/kiosk/.config/autostart/kiosk.desktop`:
+
+```sh
+mkdir -p /home/kiosk/.config/autostart
+nano /home/kiosk/.config/autostart/kiosk.desktop
+```
+
+Paste the following content into the opened file:
+```
+[Desktop Entry]
+Type=Application
+Name=Firefox Kiosk
+Exec=/home/kiosk/kiosk-loop.sh
+X-GNOME-Autostart-enabled=true
+```
+
+
+
+### 8.) Prevent firefox from asking stuff after its start. (Maybe optional if firefox is installed via snap)
+
+Therefore open the configuration file `/home/kiosk/.config/autostart/kiosk.desktop`:
+
+```sh
+mkdir -p /etc/firefox/policies
+nano /etc/firefox/policies/policies.json
+```
+
+Paste the following content into the opened file:
+```
+{
+  "policies": {
+    "DontCheckDefaultBrowser": true,
+    "DisableProfileImport": true,
+    "OverrideFirstRunPage": "",
+    "OverridePostUpdatePage": "",
+    "DisableTelemetry": true,
+    "DisableAppUpdate": true,
+    "DisableDefaultBrowserAgent": true,
+    "DisableFirefoxStudies": true,
+    "UserMessaging": {
+      "SkipOnboarding": true,
+      "WhatsNew": false
+    },
+    "Preferences": {
+      "browser.rights.3.shown": true,
+      "browser.rights.override": true,
+      "datareporting.policy.dataSubmissionEnabled": false,
+      "datareporting.policy.dataSubmissionPolicyAcceptedVersion": 9999,
+      "datareporting.policy.dataSubmissionPolicyBypassNotification": true,
+      "toolkit.telemetry.prompted": 2,
+      "toolkit.telemetry.rejected": true
+    }
+  }
+}
+```
+
+
+
+Troubleshouting
+---------------
+
+```sh
+# No cloud-init
+apt purge cloud-init -y && apt autoremove --purge -y
+
+# If exists and fails:
+systemctl disable pd-mapper.service
+
+# If firefox should be installed via apt:
+snap remove firefox
+
+curl -o /etc/apt/keyrings/packages.mozilla.org.asc https://packages.mozilla.org/apt/repo-signing-key.gpg
+
+echo '
+Types: deb
+URIs: https://packages.mozilla.org/apt
+Suites: mozilla
+Components: main
+Signed-By: /etc/apt/keyrings/packages.mozilla.org.asc
+' | sudo tee /etc/apt/sources.list.d/mozilla.sources
+
+echo '
+Package: *
+Pin: origin packages.mozilla.org
+Pin-Priority: 1000
+' | sudo tee /etc/apt/preferences.d/mozilla
+
+apt update
+apt install firefox
+```