2025-06-26-13-33-49: Cronjob

roles/lmn_misc/defaults/main.yml

@@ -0,0 +1,9 @@
+---
+misc_avoid_suspend: true
+misc_pwroff: true
+misc_pwroff_idle: true
+misc_pxe_first: false
+misc_reporter: false
+misc_reporter_serv: "localhost 1234"
+misc_clonescreen: false
+misc_clonescreen_mode: "1920x1080@60"

roles/lmn_misc/files/bootorder.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/bash
+#
+# fix boot order: first PXE, then Debian
+#
+set -eu
+
+cur="$(efibootmgr | grep -Ei 'BootOrder:' | \
+		     sed -E 's/^BootOrder: ([[:xdigit:]]{4}),.+$/\1/')"
+pxeip4="$(efibootmgr | grep -Ei "IP.*4" | \
+		     sed -E 's/^Boot([[:xdigit:]]{4}).+$/\1/')"
+debian="$(efibootmgr | grep -Ei "debian" | \
+		     sed -E 's/^Boot([[:xdigit:]]{4}).+$/\1/')"
+
+if [[ "$cur" != "$pxeip4" ]] && [[ -n "$pxeip4" ]] && [[ -n "$debian" ]] ; then
+    efibootmgr -o $pxeip4,$debian
+else
+    echo "Nothing to do."
+fi

roles/lmn_misc/files/pwroff

@@ -0,0 +1,48 @@
+#!/bin/bash
+#
+# logout idle users and shutdown machine
+#
+set -eu
+
+action="systemctl poweroff"
+uptime=$(cat /proc/uptime | cut -f1 -d.)
+maxidle=3600  ## seconds
+
+u=($(loginctl list-users --no-legend  | sort -hr | head -1))
+una=${u[1]:-''}
+uid=${u[0]:-''}
+
+talk2dbus() {
+    local display=":$(ls /tmp/.X11-unix/* | sed 's#/tmp/.X11-unix/X##' | head -n 1)"
+    sudo -u $una DISPLAY=$display \
+	 DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/$uid/bus "$@"
+}
+
+########
+
+## shutdown if nobody is loged in:
+if [[ -z "$una" ]] || [[ $uid -lt 1000 ]] ; then
+  exec $action
+fi
+
+# FIXME: find idle time independent of running screensaver
+if ! t=$(talk2dbus qdbus org.kde.screensaver /ScreenSaver GetActiveTime) ; then
+    echo "No graphical logins found."
+else
+    idle=$(( t / 1000 ))
+    if [[ $idle -gt $maxidle ]] && [[ ! -d "/srv/samba/schools/default-school/teachers/" ]] ; then
+        talk2dbus notify-send -i system-shutdown -u critical -a 'Important System Information' \
+	          'Please log out, the system will shut down soon!' \
+	          'There has been no activity for too long.'
+        ## shutdown:
+        #talk2dbus qdbus org.kde.ksmserver /KSMServer logout 1 2 0
+        ## logout:
+        talk2dbus qdbus org.kde.ksmserver /KSMServer logout 1 0 0 || \
+	    loginctl terminate-user $una
+        echo "Log-out user $una after being idle for $idle seconds."
+    else
+        echo "The user $una has been idle for $idle seconds."
+    fi
+fi
+
+#w -s | grep tty | sed "s/[[:space:]]\+/ /g" | cut -f4 -d ' '

roles/lmn_misc/files/pwroff.service

@@ -0,0 +1,6 @@
+[Unit]
+Description=Run pwroff script
+
+[Service]
+Type=simple
+ExecStart=/usr/local/sbin/pwroff

roles/lmn_misc/files/pwroff.timer

@@ -0,0 +1,9 @@
+[Unit]
+Description=Run pwroff script every 15 min after 90 min uptime
+
+[Timer]
+OnBootSec=90min
+OnUnitActiveSec=15min
+
+[Install]
+WantedBy=timers.target

roles/lmn_misc/files/reporter

@@ -0,0 +1,33 @@
+#!/usr/bin/bash
+#
+# Send stdout of some commands to monitoring server.
+# Collect the reports with 'nc -u -k -l 1234' on 'sendto'.
+# Use /bin/nc.openbsd, /bin/nc.traditional seems not to work.
+#
+set -eu
+
+sendto="collector.steinbeis.schule 1234"
+n=0
+
+cmds=(
+    'uname -a'
+    'tail -1 /var/local/ansible-stamps'
+    'ip route list default'
+    'ip link show | \
+       sed -nE -e "s/^[2-9]: (\S+): .+/\1/p" -e "s/.+ether ([0-9a-f:]+) .+/\1/p" | \
+       paste - -'
+)
+#    'w'
+#    'uptime'
+#    'ls -d --full-time /home/ansible/.ansible/tmp/'
+#    'ip addr show'
+#    'apt list --upgradeable -o Apt::Cmd::Disable-Script-Warning=true'
+
+r="$HOSTNAME ------- $(date --rfc-3339=seconds) -------
+$(for c in "${cmds[@]}" ; do
+      n=$(( n + 1 ))
+      echo -n "$n"
+      eval "$c" | sed 's/^/\t/'
+done | sed "s/^/$HOSTNAME /")
+## -------------------------------------------------"
+echo "$r" | nc -w 1 -u $sendto

roles/lmn_misc/files/reporter.service

@@ -0,0 +1,6 @@
+[Unit]
+Description=Run reporting script
+
+[Service]
+Type=simple
+ExecStart=/usr/local/sbin/reporter

roles/lmn_misc/files/reporter.timer

@@ -0,0 +1,9 @@
+[Unit]
+Description=Run reporter script every 15 min
+
+[Timer]
+OnBootSec=5min
+OnUnitActiveSec=15min
+
+[Install]
+WantedBy=timers.target

roles/lmn_misc/handlers/main.yml

@@ -0,0 +1,2 @@
+- name: Run update-grub
+  ansible.builtin.command: update-grub

roles/lmn_misc/tasks/main.yml

@@ -0,0 +1,217 @@
+---
+- name: Enable wake-on-lan for all ethernet connections
+  ansible.builtin.copy:
+    dest: /etc/NetworkManager/conf.d/wake-on-lan.conf
+    mode: '0644'
+    content: |
+      [connection]
+      ethernet.wake-on-lan=64
+
+- name: Prepare directory for apt-daily override
+  ansible.builtin.file:
+    path: /etc/systemd/system/apt-daily.timer.d/
+    mode: '0755'
+    state: directory
+
+- name: Run apt update early to avoid outdated package lists
+  ansible.builtin.copy:
+    dest: /etc/systemd/system/apt-daily.timer.d/override.conf
+    mode: '0644'
+    content: |
+      [Timer]
+      RandomizedDelaySec=30m
+
+# Avoid suspend
+
+- name: Create directory to avoid suspend
+  ansible.builtin.file:
+    path: /etc/systemd/sleep.conf.d/
+    state: directory
+    mode: '0755'
+  when: misc_avoid_suspend
+
+- name: Avoid suspending
+  ansible.builtin.blockinfile:
+    path: /etc/systemd/sleep.conf.d/nosuspend.conf
+    create: true
+    mode: '0644'
+    block: |
+      [Sleep]
+      AllowSuspend=no
+      AllowHibernation=no
+      AllowSuspendThenHibernate=no
+      AllowHybridSleep=no
+  when: misc_avoid_suspend
+
+# Auto Poweroff
+
+- name: Copy pwroff script
+  ansible.builtin.copy:
+    src: pwroff
+    dest: /usr/local/sbin/
+    mode: '0755'
+
+- name: Provide services and timers for pwroff
+  ansible.builtin.copy:
+    src: "{{ item }}"
+    dest: "/etc/systemd/system/{{ item }}"
+    mode: '0644'
+  loop:
+    - pwroff.service
+    - pwroff.timer
+  when: misc_pwroff
+
+- name: Enable pwroff.timer
+  ansible.builtin.systemd:
+    name: pwroff.timer
+    enabled: true
+  when: misc_pwroff
+
+# Shut down when idle for too long
+
+- name: Shut down when idle for too long
+  ansible.builtin.copy:
+    dest: /etc/xdg/powermanagementprofilesrc
+    mode: '0644'
+    content: |
+      [AC][SuspendSession]
+      idleTime=7200000
+      suspendType=8
+  when: misc_pwroff_idle
+
+# Boot splash
+
+- name: Enable boot splash screen
+  ansible.builtin.replace:
+    dest: "/etc/default/grub"
+    regexp: '"quiet"$'
+    replace: '"quiet splash"'
+  notify: Run update-grub
+
+# Grub settings
+
+- name: Protect editing grub menu entries
+  ansible.builtin.blockinfile:
+    path: /etc/grub.d/40_custom
+    block: |
+      set superusers='root'
+      export superusers
+      password_pbkdf2 root {{ grub_pwd }}
+  notify: Run update-grub
+  when: grub_pwd | bool | default(false)
+
+- name: Allow booting grub menu entries
+  ansible.builtin.lineinfile:
+    dest: /etc/grub.d/10_linux
+    line: CLASS="${CLASS} --unrestricted"
+    insertafter: '^CLASS=.*'
+    firstmatch: true
+  notify: Run update-grub
+
+- name: Disable Grub submenus
+  ansible.builtin.lineinfile:
+    dest: /etc/default/grub
+    line: 'GRUB_DISABLE_SUBMENU=true'
+    insertafter: '^GRUB_TIMEOUT=.*'
+  notify: Run update-grub
+
+- name: Grub timeout
+  ansible.builtin.lineinfile:
+    dest: /etc/default/grub
+    regexp: '^(GRUB_TIMEOUT=).*'
+    line: '\g<1>1'
+    backrefs: true
+  notify: Run update-grub
+
+# PXE first boot order
+
+- name: Copy some scripts
+  ansible.builtin.copy:
+    src: bootorder.sh
+    dest: /usr/local/sbin/
+    mode: '0755'
+  when: misc_pxe_first
+
+- name: PXE first boot order
+  ansible.builtin.command: /usr/local/sbin/bootorder.sh
+  register: cmd_result
+  changed_when: cmd_result.stdout is not search('Nothing to do.')
+  when: misc_pxe_first
+
+# Disable Caps Lock
+
+- name: Keyboard compose key
+  ansible.builtin.lineinfile:
+    dest: /etc/default/keyboard
+    regexp: '^(XKBOPTIONS=).*'
+    line: '\1"compose:caps"'
+    backrefs: true
+
+# Activate unattended upgrades
+
+- name: Install unattended-upgrades
+  ansible.builtin.apt:
+    name:
+      - unattended-upgrades
+
+- name: Update all packages unattended
+  ansible.builtin.replace:
+    path: /etc/apt/apt.conf.d/50unattended-upgrades
+    regexp: '^//(\s+"origin=.+-updates";)$'
+    replace: '  \1'
+
+# Install reporter
+
+- name: Copy reporter
+  ansible.builtin.template:
+    src: reporter.j2
+    dest: /usr/local/sbin/reporter
+    mode: '0755'
+
+- name: Provide services and timers for reporter
+  ansible.builtin.copy:
+    src: "{{ item }}"
+    dest: "/etc/systemd/system/{{ item }}"
+    mode: '0644'
+  loop:
+    - reporter.service
+    - reporter.timer
+  when: misc_reporter
+
+- name: Enable reporter.timer
+  ansible.builtin.systemd:
+    name: reporter.timer
+    enabled: true
+  when: misc_reporter
+
+# Prepare CloneScreen on Presenter PCs
+
+- name: Fix primary screen for class room PCs with projector
+  when: misc_clonescreen
+  block:
+    - name: Set primary screen for login
+      ansible.builtin.blockinfile:
+        path: /usr/share/sddm/scripts/Xsetup
+        block: |
+          xrandr --output {{ dual_screen[0] }} --primary
+      when: dual_screen is defined
+    - name: Reset primary screen for login
+      ansible.builtin.blockinfile:
+        path: /usr/share/sddm/scripts/Xsetup
+        state: absent
+      when: dual_screen is not defined
+    - name: Deploy fix-screen script
+      ansible.builtin.template:
+        src: lmn-fix-screen.j2
+        dest: /usr/local/bin/lmn-fix-screen
+        mode: '0755'
+    - name: Deploy fix-screen autostarter
+      ansible.builtin.copy:
+        dest: /etc/xdg/autostart/lmn-fix-screen.desktop
+        mode: '0644'
+        content: |
+          [Desktop Entry]
+          Name=fix-screen
+          Exec=lmn-fix-screen
+          Type=Application
+          NoDisplay=true

roles/lmn_misc/templates/lmn-fix-screen.j2

@@ -0,0 +1,29 @@
+#!/usr/bin/bash
+#
+# Set the primary screen after login
+# Clone screen on all displays
+# Set audio-default-sink
+#
+set -eu
+
+if [[ "$XDG_SESSION_TYPE" = wayland ]] ; then
+  while ! kscreen-doctor -o; do
+    sleep 1
+  done
+  sleep 2
+  {% if dual_screen is defined %}
+    kscreen-doctor output.{{ dual_screen[1] }}.priority.1
+  {% endif %}
+  for N in $(kscreen-doctor -j | jq -r .outputs[].name) ; do
+    kscreen-doctor output.$N.mode.{{ misc_clonescreen_mode }} output.$N.position.0,0 output.$N.scale.$(kscreen-doctor -j | jq .outputs[].scale | sort | head -1);
+  done
+fi
+{% if audio_output is defined %}
+  pactl set-card-profile alsa_card.{{ audio_output[0] }} output:{{ audio_output[1] }}
+  pactl set-default-sink alsa_output.{{ audio_output[0] }}.{{ audio_output[1] }}
+{% else %}
+if pactl list cards | grep output:hdmi-stereo: | grep verfügbar:\ ja; then
+  pactl set-card-profile $(pactl list short cards | grep -m1 pci | head -1 | cut -f2) output:hdmi-stereo
+  pactl set-default-sink $(pactl list short cards | grep -m1 pci | head -1 | cut -f2 | sed s/card/output/g).output:hdmi-stereo
+fi
+{% endif %}

roles/lmn_misc/templates/reporter.j2

@@ -0,0 +1,33 @@
+#!/usr/bin/bash
+#
+# Send stdout of some commands to monitoring server.
+# Collect the reports with 'nc -u -k -l 1234' on 'sendto'.
+# Use /bin/nc.openbsd, /bin/nc.traditional seems not to work.
+#
+set -eu
+
+sendto="{{ misc_reporter_serv }} 1234"
+n=0
+
+cmds=(
+    'uname -a'
+    'tail -1 /var/local/ansible-stamps'
+    'ip route list default'
+    'ip link show | \
+       sed -nE -e "s/^[2-9]: (\S+): .+/\1/p" -e "s/.+ether ([0-9a-f:]+) .+/\1/p" | \
+       paste - -'
+)
+#    'w'
+#    'uptime'
+#    'ls -d --full-time /home/ansible/.ansible/tmp/'
+#    'ip addr show'
+#    'apt list --upgradeable -o Apt::Cmd::Disable-Script-Warning=true'
+
+r="$HOSTNAME ------- $(date --rfc-3339=seconds) -------
+$(for c in "${cmds[@]}" ; do
+      n=$(( n + 1 ))
+      echo -n "$n"
+      eval "$c" | sed 's/^/\t/'
+done | sed "s/^/$HOSTNAME /")
+## -------------------------------------------------"
+echo "$r" | nc -w 1 -u $sendto