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node_exporter/text_collector_examples/yum.sh

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#!/bin/bash
#
# Description: Expose metrics from yum updates.
#
# Author: Slawomir Gonet <slawek@otwiera.cz>
#
# Based on apt.sh by Ben Kochie <superq@gmail.com>
upgrades=$(/usr/bin/yum -q check-updates | awk 'BEGIN { mute=1 } /Obsoleting Packages/ { mute=0 } mute { print }' | egrep '^\w+\.\w+' | awk '{print $3}' | sort | uniq -c | awk '{print "yum_upgrades_pending{origin=\""$2"\"} "$1}')
echo '# HELP yum_upgrades_pending Yum package pending updates by origin.'
echo '# TYPE yum_upgrades_pending gauge'
if [[ -n "${upgrades}" ]] ; then
echo "${upgrades}"
else
echo 'yum_upgrades_pending{origin=""} 0'
fi