diff --git a/roles/lmn_localhome/tasks/main.yml b/roles/lmn_localhome/tasks/main.yml
index ea3cf2e..a06998b 100644
--- a/roles/lmn_localhome/tasks/main.yml
+++ b/roles/lmn_localhome/tasks/main.yml
@@ -33,7 +33,6 @@
     dest: /etc/profile.d/lmn-logout.sh
     mode: '0755'
     content: |
-      # logout script (may be empty)
       {% if localhome_logout_missing_serverhome %}
       [[ "${UID}" -gt 10000 ]] && ! findmnt /srv/samba/schools/default-school > /dev/null && exit 0
       {% endif %}
diff --git a/roles/lmn_misc/files/reporter b/roles/lmn_misc/files/reporter
new file mode 100755
index 0000000..2ee481f
--- /dev/null
+++ b/roles/lmn_misc/files/reporter
@@ -0,0 +1,33 @@
+#!/usr/bin/bash
+#
+# Send stdout of some commands to monitoring server.
+# Collect the reports with 'nc -u -k -l 1234' on 'sendto'.
+# Use /bin/nc.openbsd, /bin/nc.traditional seems not to work.
+#
+set -eu
+
+sendto="collector.steinbeis.schule 1234"
+n=0
+
+cmds=(
+    'uname -a'
+    'tail -1 /var/local/ansible-stamps'
+    'ip route list default'
+    'ip link show | \
+       sed -nE -e "s/^[2-9]: (\S+): .+/\1/p" -e "s/.+ether ([0-9a-f:]+) .+/\1/p" | \
+       paste - -'
+)
+#    'w'
+#    'uptime'
+#    'ls -d --full-time /home/ansible/.ansible/tmp/'
+#    'ip addr show'
+#    'apt list --upgradeable -o Apt::Cmd::Disable-Script-Warning=true'
+
+r="$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
diff --git a/roles/lmn_misc/tasks/main.yml b/roles/lmn_misc/tasks/main.yml
index 212e418..23dce2b 100644
--- a/roles/lmn_misc/tasks/main.yml
+++ b/roles/lmn_misc/tasks/main.yml
@@ -98,7 +98,7 @@
       export superusers
       password_pbkdf2 root {{ grub_pwd }}
   notify: Run update-grub
-  when: grub_pwd is defined and grub_pwd is truthy
+  when: grub_pwd | bool | default(false)
 
 - name: Allow booting grub menu entries
   ansible.builtin.lineinfile:
@@ -190,36 +190,6 @@
   tags:
     - baseinstall
 
-# Updater
-
-- name: Provide services and timers for updater
-  ansible.builtin.template:
-    src: "{{ item }}.j2"
-    dest: "/etc/systemd/system/{{ item }}"
-    mode: '0644'
-  loop:
-    - lmn-updater.service
-    - lmn-updater.timer
-  when: misc_updater_repository | default(false) is truthy
-
-- name: Enable updater.timer
-  ansible.builtin.systemd:
-    name: lmn-updater.timer
-    enabled: true
-  when:
-    - misc_updater_repository | default(false) is truthy
-    - misc_updater_autostart | default(false) is truthy
-
-- name: Deploy inventory password file
-  ansible.builtin.copy:
-    dest: /root/.inventory-pw
-    owner: root
-    mode: '0640'
-    content: "{{ misc_updater_inventory_password }}"
-  when:
-    - misc_updater_repository | default(false) is truthy
-    - misc_updater_inventory_password | default(false) is truthy
-
 # Prepare CloneScreen on Presenter PCs
 
 - name: Fix primary screen for class room PCs with projector
diff --git a/roles/lmn_misc/templates/lmn-updater.service.j2 b/roles/lmn_misc/templates/lmn-updater.service.j2
deleted file mode 100644
index 76aad89..0000000
--- a/roles/lmn_misc/templates/lmn-updater.service.j2
+++ /dev/null
@@ -1,9 +0,0 @@
-[Unit]
-Description=Run LMN Client updates via ansible-pull
-
-[Service]
-Type=oneshot
-User=root
-ExecStart=/usr/bin/ansible-pull --only-if-changed --verbose --vault-password-file /root/.inventory-pw -l %H -d /root/lmn-client \
-           -i {{ misc_updater_inventory }} --url={{ misc_updater_repository }} -C {{ misc_updater_branch }} lmn-client.yml
-
diff --git a/roles/lmn_misc/templates/lmn-updater.timer.j2 b/roles/lmn_misc/templates/lmn-updater.timer.j2
deleted file mode 100644
index b64fdea..0000000
--- a/roles/lmn_misc/templates/lmn-updater.timer.j2
+++ /dev/null
@@ -1,9 +0,0 @@
-[Unit]
-Description=Run LMN Updater every day
-After=network-online.target
-
-[Timer]
-OnBootSec=5min
-
-[Install]
-WantedBy=timers.target
diff --git a/roles/lmn_misc/templates/reporter.j2 b/roles/lmn_misc/templates/reporter.j2
index e652b55..6a19bec 100755
--- a/roles/lmn_misc/templates/reporter.j2
+++ b/roles/lmn_misc/templates/reporter.j2
@@ -16,7 +16,6 @@ cmds=(
     'ip link show | \
        sed -nE -e "s/^[2-9]: (\S+): .+/\1/p" -e "s/.+ether ([0-9a-f:]+) .+/\1/p" | \
        paste - -'
-    'systemctl --failed | grep -v "^$"'
 )
 #    'w'
 #    'uptime'
diff --git a/roles/lmn_network/tasks/main.yml b/roles/lmn_network/tasks/main.yml
index 416a173..571c107 100644
--- a/roles/lmn_network/tasks/main.yml
+++ b/roles/lmn_network/tasks/main.yml
@@ -5,14 +5,14 @@
     mode: '0644'
     content: >
       {{ apt_conf }}
-  when: apt_conf is defined and apt_conf is truthy
+  when: apt_conf | bool | default(false)
 
 - name: Set NTP server
   ansible.builtin.lineinfile:
     path: /etc/systemd/timesyncd.conf
     insertafter: '^#NTP='
     line: NTP={{ ntp_serv }}
-  when: ntp_serv is defined and ntp_serv is truthy
+  when: ntp_serv | bool | default(false)
 
 - name: Add proposed-updates repository
   ansible.builtin.apt_repository: