icinga2-checks/check_iperf3.sh

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#!/usr/bin/env bash
function print_help {
echo "Usage: $0 --server SERVER --warning WARNING --critical CRITICAL --rsa-key RSA_KEY --username USERNAME --password PASSWORD"
echo ""
echo "Arguments:"
echo " --server The iperf3 server to test against"
echo " --warning Warning level for the speed test in Mbits/s"
echo " --critical Critical level for the speed test in Mbits/s"
echo " --rsa-key Path to the RSA public key for authentication"
echo " --username Username for authentication"
echo " --password Password for authentication"
echo ""
exit 3
}
if ! command -v iperf3 &>/dev/null; then
echo "UNKNOWN - iperf3 is not installed"
exit 3
fi
if ! command -v jq &>/dev/null; then
echo "UNKNOWN - jq is not installed"
exit 3
fi
if [[ $# -eq 0 ]]; then
print_help
fi
while [[ $# -gt 0 ]]; do
key="$1"
case $key in
--server)
SERVER="$2"
shift
shift
;;
--warning)
WARNING="$2"
shift
shift
;;
--critical)
CRITICAL="$2"
shift
shift
;;
--rsa-key)
RSA_KEY="$2"
shift
shift
;;
--username)
USERNAME="$2"
shift
shift
;;
--password)
PASSWORD="$2"
shift
shift
;;
*)
print_help
;;
esac
done
if [[ -z "$SERVER" ]] || [[ -z "$WARNING" ]] || [[ -z "$CRITICAL" ]] || [[ -z "$RSA_KEY" ]] || [[ -z "$USERNAME" ]] || [[ -z "$PASSWORD" ]]; then
echo "UNKNOWN - All arguments are required"
print_help
fi
export IPERF3_PASSWORD="$PASSWORD"
RESULT=$(iperf3 -c $SERVER -u -b 0 -J -t 10 --rsa-public-key-path $RSA_KEY --username $USERNAME 2>&1)
if [[ $? -ne 0 ]]; then
echo "UNKNOWN - iperf3 command failed: $RESULT"
exit 3
fi
if ! echo "$RESULT" | jq -e '.end.sum.bits_per_second' >/dev/null; then
echo "UNKNOWN - Invalid JSON output from iperf3: $RESULT"
exit 3
fi
STREAM_RESULT=$(echo "$RESULT" | jq '.end.streams[] | select(.udp.sender == (!0)) | .udp.bits_per_second')
SPEED_RAW=$(echo "$STREAM_RESULT" | jq 'if length > 0 then . / 1000000 else 0 end')
SPEED=$(printf "%.0f" "$SPEED_RAW")
if (($(echo "$SPEED < $CRITICAL" | bc -l))); then
echo "CRITICAL - Speed: ${SPEED} Mbits/s"
exit 2
elif (($(echo "$SPEED < $WARNING" | bc -l))); then
echo "WARNING - Speed: ${SPEED} Mbits/s"
exit 1
else
echo "OK - Speed: ${SPEED} Mbits/s"
exit 0
fi