From c4572898d5005abbc23a4bf411d0d240a028fcfc Mon Sep 17 00:00:00 2001
From: samuel-p <codes@samuel-philipp.de>
Date: Sat, 12 Jun 2021 03:00:17 +0200
Subject: [PATCH] added apt.sh

---
 README.md            |  2 +-
 node_exporter/apt.sh | 41 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 42 insertions(+), 1 deletion(-)
 create mode 100644 node_exporter/apt.sh

diff --git a/README.md b/README.md
index 093cd73..29bb615 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ __node_exporter__
 |---|---|
 |[active-sessions.sh](node_exporter/active-sessions.sh)|Script to export all active sessions to prometheus|
 |[directory-size.sh](node_exporter/directory-size.sh)|Script to export directory sizes to prometheus|
-
+|[apt.sh](node_exporter/apt.sh)|Script to export pending apt updates to prometheus|
 
 ## Setup
 
diff --git a/node_exporter/apt.sh b/node_exporter/apt.sh
new file mode 100644
index 0000000..226cc2a
--- /dev/null
+++ b/node_exporter/apt.sh
@@ -0,0 +1,41 @@
+#!/bin/bash
+#
+# adapted from https://github.com/prometheus-community/node-exporter-textfile-collector-scripts/blob/master/apt.sh
+#
+
+/usr/bin/apt-get update > /dev/null 2>&1
+
+upgrades="$(/usr/bin/apt-get --just-print dist-upgrade \
+  | /usr/bin/awk -F'[()]' \
+      '/^Inst/ { sub("^[^ ]+ ", "", $2); gsub(" ","",$2);
+                 sub("\\[", " ", $2); sub("\\]", "", $2); print $2 }' \
+  | /usr/bin/sort \
+  | /usr/bin/uniq -c \
+  | awk '{ gsub(/\\\\/, "\\\\", $2); gsub(/"/, "\\\"", $2);
+           gsub(/\[/, "", $3); gsub(/\]/, "", $3);
+           print "apt_upgrades_pending{origin=\"" $2 "\",arch=\"" $NF "\"} " $1}'
+)"
+
+autoremove="$(/usr/bin/apt-get --just-print autoremove \
+  | /usr/bin/awk '/^Remv/{a++}END{printf "apt_autoremove_pending %d", a}'
+)"
+
+echo '# HELP apt_upgrades_pending Apt package pending updates by origin.'
+echo '# TYPE apt_upgrades_pending gauge'
+if [[ -n "${upgrades}" ]] ; then
+  echo "${upgrades}"
+else
+  echo 'apt_upgrades_pending{origin="",arch=""} 0'
+fi
+
+echo '# HELP apt_autoremove_pending Apt package pending autoremove.'
+echo '# TYPE apt_autoremove_pending gauge'
+echo "${autoremove}"
+
+echo '# HELP node_reboot_required Node reboot is required for software updates.'
+echo '# TYPE node_reboot_required gauge'
+if [[ -f '/run/reboot-required' ]] ; then
+  echo 'node_reboot_required 1'
+else
+  echo 'node_reboot_required 0'
+fi