59 lines
2.0 KiB
Bash
Executable File
59 lines
2.0 KiB
Bash
Executable File
#!/bin/bash
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# https://github.com/nagios-plugins/nagios-plugins/blob/master/plugins/check_apt.c
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usage() {
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echo "usage: check_apt_critical.sh [-h] [--warn WARN] [--crit CRIT]
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options:
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-h, --help Show this help message and exit.
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--warn WARN The number of critical updates needed to trigger WARNING.
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--crit CRIT The number of critical updates needed to trigger CRITICAL.
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If --warn or --crit is not provided, any number of updates will trigger CRITICAL."
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exit 3
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}
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WARN_LEVEL=0
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CRIT_LEVEL=0
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while [ "$1" != "" ]; do
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case $1 in
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--warn ) shift
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WARN_LEVEL=$1
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;;
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--crit ) shift
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CRIT_LEVEL=$1
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;;
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* ) usage
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esac
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shift
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done
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CRITICAL_RE='^Inst [^\(]*\(.* (Debian-Security:|Ubuntu:[^/]*/[^-]*-security)'
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APT_PATH=$(which apt-get)
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CRITICAL_UPDATES=$($APT_PATH --just-print upgrade -o 'Debug::NoLocking=true' -s -qq | grep -oE "$CRITICAL_RE" )
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NUM_CRIT_UPDATES=$(echo "$CRITICAL_UPDATES" | wc -l)
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if [[ $NUM_CRIT_UPDATES -eq 0 ]]; then
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echo "OK - $NUM_CRIT_UPDATES critical updates available. | critical_updates=$NUM_CRIT_UPDATES"
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exit 0
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fi
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if [[ $CRIT_LEVEL -gt 0 ]] || [[ $WARN_LEVEL -gt 0 ]]; then
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# Only use the levels if the user has set one of them.
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if [[ $CRIT_LEVEL -gt 0 ]] && [[ $NUM_CRIT_UPDATES -ge $CRIT_LEVEL ]]; then
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# If the crit level is 0, that means the user has only set the --warn flag. We'll just ignore the crit level since that's what they did.
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echo "CRITICAL - $NUM_CRIT_UPDATES critical updates available. | critical_updates=$NUM_CRIT_UPDATES"
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exit 2
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elif [[ $NUM_CRIT_UPDATES -ge $WARN_LEVEL ]]; then
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echo "WARNING - $NUM_CRIT_UPDATES critical updates available. | critical_updates=$NUM_CRIT_UPDATES"
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exit 1
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else
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echo "OK - $NUM_CRIT_UPDATES critical updates available. | critical_updates=$NUM_CRIT_UPDATES"
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exit 0
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fi
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else
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echo "CRITICAL - $NUM_CRIT_UPDATES critical updates available. | critical_updates=$NUM_CRIT_UPDATES"
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exit 2
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fi
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