From 7fed0e879be04679c464d108e168185259122654 Mon Sep 17 00:00:00 2001
From: "Andreas B. Mundt" <andreas.mundt@steinbeisschule-reutlingen.de>
Date: Mon, 13 Nov 2023 15:41:49 +0100
Subject: [PATCH] Implement reporting service.

---
 roles/lmn_fvs/files/pwroff.timer     |  4 +--
 roles/lmn_fvs/files/reporter         | 51 ++++++++++++++++++++++++++++
 roles/lmn_fvs/files/reporter.service |  6 ++++
 roles/lmn_fvs/files/reporter.timer   |  9 +++++
 roles/lmn_fvs/tasks/main.yml         | 14 +++++---
 5 files changed, 78 insertions(+), 6 deletions(-)
 create mode 100644 roles/lmn_fvs/files/reporter
 create mode 100644 roles/lmn_fvs/files/reporter.service
 create mode 100644 roles/lmn_fvs/files/reporter.timer

diff --git a/roles/lmn_fvs/files/pwroff.timer b/roles/lmn_fvs/files/pwroff.timer
index de3fcd0..0d11a63 100644
--- a/roles/lmn_fvs/files/pwroff.timer
+++ b/roles/lmn_fvs/files/pwroff.timer
@@ -1,9 +1,9 @@
 [Unit]
-Description=Run pwroff script every 30 min after 90 min uptime
+Description=Run pwroff script every 15 min after 90 min uptime
 
 [Timer]
 OnBootSec=90min
-OnUnitActiveSec=30min
+OnUnitActiveSec=15min
 
 [Install]
 WantedBy=timers.target
diff --git a/roles/lmn_fvs/files/reporter b/roles/lmn_fvs/files/reporter
new file mode 100644
index 0000000..0a87541
--- /dev/null
+++ b/roles/lmn_fvs/files/reporter
@@ -0,0 +1,51 @@
+#!/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"
+
+cmds=(
+    'uname -a'
+    'uptime'
+    'apt list --upgradeable -o Apt::Cmd::Disable-Script-Warning=true'
+    'systemctl --failed'
+    'w'
+    'ls -ld /home/ansible/.ansible/tmp/'
+    'ip addr show'
+)
+
+r="$HOSTNAME: ------- $(date) -------
+$(for c in "${cmds[@]}" ; do echo "$c"; $c | sed 's/^/  /' ; done | sed "s/^/$HOSTNAME: /")
+## -------------------------------------------------"
+echo "$r" | nc -w 1 -u $sendto
+
+
+## below is the corresponding collector part:
+
+# #!/usr/bin/bash
+# #
+# # collect messages from reporter and drop it into log files
+# #
+#
+# set -eu
+#
+# port=1234
+#
+# logdir="/var/log/collector"
+# [[ -d "$logdir" ]] || mkdir "$logdir"
+#
+# nc -k -l -u -p "$port" | while read line ; do
+#     sndr="${line%%:*}"
+#     msg="${line#*: }"
+#     if [[ "$sndr" =~ [a-z0-9]+ ]] ; then
+#         if [[ "$msg" =~ ^-------\ .+\ -------$ ]] ; then
+#             echo "$msg" >  "$logdir/$sndr"
+#         else
+#             echo "$msg" >> "$logdir/$sndr"
+#         fi
+#     fi
+# done
diff --git a/roles/lmn_fvs/files/reporter.service b/roles/lmn_fvs/files/reporter.service
new file mode 100644
index 0000000..09f6378
--- /dev/null
+++ b/roles/lmn_fvs/files/reporter.service
@@ -0,0 +1,6 @@
+[Unit]
+Description=Run reporting script
+
+[Service]
+Type=simple
+ExecStart=/usr/local/sbin/reporter
diff --git a/roles/lmn_fvs/files/reporter.timer b/roles/lmn_fvs/files/reporter.timer
new file mode 100644
index 0000000..dbfda49
--- /dev/null
+++ b/roles/lmn_fvs/files/reporter.timer
@@ -0,0 +1,9 @@
+[Unit]
+Description=Run reporter script every 15 min
+
+[Timer]
+OnBootSec=5min
+OnUnitActiveSec=15min
+
+[Install]
+WantedBy=timers.target
diff --git a/roles/lmn_fvs/tasks/main.yml b/roles/lmn_fvs/tasks/main.yml
index 901d354..ee841a7 100644
--- a/roles/lmn_fvs/tasks/main.yml
+++ b/roles/lmn_fvs/tasks/main.yml
@@ -92,7 +92,7 @@
     regexp: '^//(\s+"origin=.+-updates";)$'
     replace: '  \1'
 
-- name: Copy pwroff and bootorder scripts
+- name: Copy some scripts
   copy:
     src: "{{ item }}"
     dest: /usr/local/sbin/
@@ -100,20 +100,26 @@
   loop:
     - pwroff
     - bootorder.sh
+    - reporter
 
-- name: Provide service and timer for pwroff script
+- name: Provide services and timers for some scripts
   copy:
     src: "{{ item }}"
     dest: "/etc/systemd/system/{{ item }}"
     mode: 0644
-  with_items:
+  loop:
     - pwroff.service
     - pwroff.timer
+    - reporter.service
+    - reporter.timer
 
 - name: Enable pwroff.timer
   systemd:
-    name: pwroff.timer
+    name: "{{ item }}"
     enabled: true
+  loop:
+    - pwroff.timer
+    - reporter.timer
 
 - name: PXE first boot order
   command: /usr/local/sbin/bootorder.sh