templier-ansible/roles/prometheus-node-exporter/files/apt.sh

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#!/bin/bash
#
# Description: Expose metrics from apt updates.
#
# Author: Ben Kochie <superq@gmail.com>
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}'
)"
orphans="$(comm -23 \
<(dpkg-query -W -f '${db:Status-Abbrev}\t${Package}\n' \
| grep '^.[^nc]' | cut -f2 | sort) \
<(apt-cache dumpavail | sed -rn 's/^Package: (.*)/\1/p' | sort -u) \
| awk 'END{printf "apt_orphans %d", NR}'
)"
echo '# HELP apt_upgrades_pending Apt package pending updates by origin.'
echo '# TYPE apt_upgrades_pending gauge'
if [[ -n "${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 apt_orphans Orphan apt package.'
echo '# TYPE apt_orphans gauge'
echo "${orphans}"
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