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check_iowait.sh from chatgpt

This commit is contained in:
Cyberes 2023-04-21 23:54:18 -06:00
parent f37e260d7b
commit 7c73fbd4c2
1 changed files with 42 additions and 23 deletions
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65
check_iowait.sh
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@ -1,4 +1,5 @@
#!/bin/bash
# Nagios plugin to check iowait on Linux
if ! command -v iostat &>/dev/null; then
echo "iostat not found! Please install sysstat:"
@ -6,27 +7,45 @@ if ! command -v iostat &>/dev/null; then
exit 1
fi
if [ "$1" = "-w" ] && [ "$2" -gt "0" ] && [ "$3" = "-c" ] && [ "$4" -gt "0" ]; then
IOWAIT=$(iostat | sed -n "4p" | awk {'print $4'} | cut -d. -f1)
if [ "$IOWAIT" -ge "$4" ]; then
echo "IO Wait: CRITICAL - $IOWAIT % |IOWAIT=$IOWAIT;;;;"
exit 2
elif [ "$IOWAIT" -ge "$2" ]; then
echo "IO Wait: WARNING - $IOWAIT % |IOWAIT=$IOWAIT;;;;"
exit 1
else
echo "IO Wait: OK - $IOWAIT % |IOWAIT=$IOWAIT;;;;"
exit 0
fi
else
echo "$0 v1.0"
echo ""
echo "Usage:"
echo "$0 -w <warnlevel> -c <critlevel>"
echo ""
echo "warnlevel and critlevel is percentage value without %"
echo "
echo "EXAMPLE: check_iowait -w 90 -c 95
echo ""
exit
# Define usage function
function usage {
echo "Usage: $0 [-w <warning threshold>] [-c <critical threshold>]"
echo " -w: Warning threshold for iowait percentage (default: 50)"
echo " -c: Critical threshold for iowait percentage (default: 75)"
exit 3
}
# Parse command line arguments
while getopts "w:c:" opt; do
case $opt in
w) WARNING_THRESHOLD=$OPTARG ;;
c) CRITICAL_THRESHOLD=$OPTARG ;;
\?)
echo "Invalid option: -$OPTARG" >&2
usage
;;
:)
echo "Option -$OPTARG requires an argument." >&2
usage
;;
esac
done
# Set default warning and critical thresholds if not provided
WARNING_THRESHOLD=${WARNING_THRESHOLD:-50}
CRITICAL_THRESHOLD=${CRITICAL_THRESHOLD:-75}
IOWAIT=$(iostat -c | awk '/^ /{print $4}')
if (($(echo "$IOWAIT > $CRITICAL_THRESHOLD" | bc -l))); then
echo "CRITICAL - iowait percentage is $IOWAIT% | iowait=$IOWAIT%;$WARNING_THRESHOLD;$CRITICAL_THRESHOLD;0;100"
exit 2
fi
if (($(echo "$IOWAIT > $WARNING_THRESHOLD" | bc -l))); then
echo "WARNING - iowait percentage is $IOWAIT% | iowait=$IOWAIT%;$WARNING_THRESHOLD;$CRITICAL_THRESHOLD;0;100"
exit 1
fi
echo "OK - iowait percentage is $IOWAIT% | iowait=$IOWAIT%;$WARNING_THRESHOLD;$CRITICAL_THRESHOLD;0;100"
exit 0