nagios-scripts/check-url.sh
Jeroen De Meerleer 41082ce029
feat: Add script to check URL response time
This commit adds a new bash script that checks the response time of a given URL. The script takes in options for proxy server, warning and critical levels for response time, and the URL to be checked. It returns exit codes based on whether the response time is within acceptable limits or not.
2023-05-31 12:26:03 +02:00

107 lines
3.0 KiB
Bash

#!/bin/bash
#
#/
#/ Usage:
#/ check-url.sh --proxy=<proxy-url> --warning=<level> --critical=<level> <URL>
#/
#/ Checks the disk usage
#/
#/ Options:
#/ -p, --proxy=<proxy-url> The proxy server to use
#/ -w, --warning=<sec> The amount of response time to trigger a warning (in sec)
#/ -c, --critical=<sec> The amount of response time to trigger a critcal warning (in sec)
#/
#/ Exit Codes:
#/ 0 Everything OK
#/ 1 Warning level exceeded
#/ 2 Critical level exceeded
#/ 3 Unknown status
#/
Usage() {
grep '^#/' "${script_dir}/${script_name}" | sed 's/^#\/\w*//'
}
GetOptions() {
# https://stackoverflow.com/a/29754866
OPTIONS=p:w:c:
LONGOPTS=proxy:,warning:,critical:
# -use ! and PIPESTATUS to get exit code with errexit set
# -temporarily store output to be able to check for errors
# -activate quoting/enhanced mode (e.g. by writing out “--options”)
# -pass arguments only via -- "$@" to separate them correctly
! PARSED=$(getopt --options=$OPTIONS --longoptions=$LONGOPTS --name "$0" -- "$@")
if [[ ${PIPESTATUS[0]} -ne 0 ]]; then
# e.g. return value is 1
# then getopt has complained about wrong arguments to stdout
Usage
exit 2
fi
# read getopt's output this way to handle the quoting right:
eval set -- "$PARSED"
# now enjoy the options in order and nicely split until we see --
while true; do
case "$1" in
-p|--proxy)
proxy="$2"
shift 2
;;
-w|--warning)
warn="$2"
shift 2
;;
-c|--critital)
crit="$2"
shift 2
;;
--)
shift
break
;;
*)
echo "URL UNKNOWN - ${1} is not a valid parameter"
exit 3
;;
esac
done
if [ -z ${1+x} ]; then
echo "URL UNKNOWN - url not given"
exit 3
else
url=${1}
fi
}
LC_NUMERIC="C"
warn=1
crit=2
script_name=$(basename "${0}")
script_dir=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
url=''
GetOptions "$@"
eval $(curl -L -o /dev/null -s -w 'RESPONSE_CODE=%{response_code}\nRESPONSE_TIME=%{time_total}\nDNS_TIME=%{time_namelookup}\nCONNECT_TIME=%{time_connect}' ${proxy:+"--proxy" "$proxy"} $url)
rdetail=""
if (( $(echo "$RESPONSE_CODE != 200" | bc -l) )); then
rval=2
rmsg="CRITICAL"
rdetail="$url was not available"
elif (( $(echo "$RESPONSE_TIME < ${warn}" | bc -l) )); then
rval=0
rmsg="OK"
elif (( $(echo "$RESPONSE_TIME < ${crit}" | bc -l) )); then
rval=1
rmsg="WARNING"
else
rval=2
rmsg="CRITICAL"
fi
unit='s'
echo "URL ${rmsg} - ${rdetail:+"$rdetail - "}Response code: ${RESPONSE_CODE} Response Time: ${RESPONSE_TIME} DNS Lookup time: ${DNS_TIME} Connect time: ${CONNECT_TIME}|response=${RESPONSE_TIME}${unit} dns-query=${DNS_TIME}${unit} connect=${CONNECT_TIME}${unit}"
exit $rval