TA-unix/bin/iostat_metric.sh

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#!/bin/sh
# SPDX-FileCopyrightText: 2024 Splunk, Inc.
# SPDX-License-Identifier: Apache-2.0
# suggested command for testing reads: $ find / -type f 2>/dev/null | xargs wc &> /dev/null &
# shellcheck disable=SC1091
. "$(dirname "$0")"/common.sh
if [ "$KERNEL" = "Linux" ] ; then
CMD='iostat -xky 1 1'
assertHaveCommand "$CMD"
if [ ! -f "/etc/os-release" ] ; then
DEFINE="-v OSName=$(cat /etc/*release | head -n 1| awk -F" release " '{print $1}'| tr ' ' '_') -v OS_version=$(cat /etc/*release | head -n 1| awk -F" release " '{print $2}' | cut -d\. -f1) -v IP_address=$(hostname -I | cut -d\ -f1)"
else
DEFINE="-v OSName=$(cat /etc/*release | grep '\bNAME=' | cut -d '=' -f2 | tr ' ' '_' | cut -d\" -f2) -v OS_version=$(cat /etc/*release | grep '\bVERSION_ID=' | cut -d '=' -f2 | cut -d\" -f2) -v IP_address=$(hostname -I | cut -d\ -f1)"
fi
FILTER='/Device/ && /r\/s/ && /w\/s/ {f=1;}f'
# shellcheck disable=SC2016
PRINTF='{if ($0~/Device/) {printf "%s OSName OS_version IP_address \n", $0} else if (NF!=0) {printf "%s %s %s %s\n", $0, OSName, OS_version, IP_address}}'
elif [ "$KERNEL" = "SunOS" ] ; then
CMD='iostat -xn 1 2'
# jscpd:ignore-start
assertHaveCommand "$CMD"
DEFINE="-v OSName=$(uname -s) -v OS_version=$(uname -r) -v IP_address=$(ifconfig -a | grep 'inet ' | grep -v 127.0.0.1 | cut -d\ -f2 | head -n 1)"
FILTER='/device/ && /r\/s/ && /w\/s/ {f++;} f==2'
# shellcheck disable=SC2016
PRINTF='{if ($0~/device/ && /r\/s/ && /w\/s/) {printf "%s OSName OS_version IP_address \n", $0} else if (NF!=0) {printf "%s %s %s %s\n", $0, OSName, OS_version, IP_address}}'
# jscpd:ignore-end
elif [ "$KERNEL" = "AIX" ] ; then
CMD='iostat 1 2'
assertHaveCommand "$CMD"
DEFINE="-v OSName=$(uname -s) -v OS_version=$(oslevel -r | cut -d'-' -f1) -v IP_address=$(ifconfig -a | grep 'inet ' | grep -v 127.0.0.1 | cut -d\ -f2 | head -n 1)"
FILTER='/^cd/ {next} /Disks/ && /Kb_read/ && /Kb_wrtn/ {f++;} f==2'
# shellcheck disable=SC2016
PRINTF='{if ($0~/Disks/ && /Kb_read/ && /Kb_wrtn/) {printf "%s OSName OS_version IP_address \n", $0} else if (NF!=0) {printf "%s %s %s %s\n", $0, OSName, OS_version/1000, IP_address}}'
elif [ "$KERNEL" = "FreeBSD" ] ; then
CMD='iostat -x -c 2'
assertHaveCommand "$CMD"
DEFINE="-v OSName=$(uname -s) -v OS_version=$(uname -r) -v IP_address=$(ifconfig -a | grep 'inet ' | grep -v 127.0.0.1 | cut -d\ -f2 | head -n 1)"
FILTER='/device/ && /r\/s/ && /w\/s/ {f++;} f==2'
# shellcheck disable=SC2016
PRINTF='{if ($0~/device/ && /r\/s/ && /w\/s/) {printf "%s OSName OS_version IP_address \n", $0} else if (NF!=0) {printf "%s %s %s %s\n", $0, OSName, OS_version, IP_address}}'
elif [ "$KERNEL" = "Darwin" ] ; then
CMD="eval $SPLUNK_HOME/bin/darwin_disk_stats ; sleep 2; echo Pause; $SPLUNK_HOME/bin/darwin_disk_stats"
# shellcheck disable=SC2086
assertHaveCommandGivenPath $CMD
HEADER='Device rReq_PS wReq_PS rKB_PS wKB_PS avgWaitMillis avgSvcMillis bandwUtilPct OSName OS_version IP_address'
HEADERIZE="BEGIN {print \"$HEADER\"}"
PRINTF='{printf "%-10s %11s %11s %12s %12s %13s %13s %13s %-35s %15s %-16s\n", device, rReq_PS, wReq_PS, rKB_PS, wKB_PS, avgWaitMillis, avgSvcMillis, bandwUtilPct, OSName, OS_version, IP_address}'
DEFINE="-v OSName=$(uname -s) -v OS_version=$(uname -r) -v IP_address=$(ifconfig -a | grep 'inet ' | grep -v 127.0.0.1 | cut -d\ -f2 | head -n 1)"
# shellcheck disable=SC2016
FILTER='BEGIN {FS="|"; after=0} /^Pause$/ {after=1; next} !/Bytes|Operations/ {next} {devices[$1]=$1; values[after,$1,$2]=$3; next}'
FORMAT='{avgSvcMillis=bandwUtilPct="?";OSName=OSName;OS_version=OS_version;IP_address=IP_address;}'
FUNC1='function getDeltaPS(disk, metric) {delta=values[1,disk,metric]-values[0,disk,metric]; return delta/2.0}'
# Calculates the latency by pulling the read and write latency fields from darwin__disk_stats and evaluating their sum
LATENCY='function getLatency(disk) {read=getDeltaPS(disk,"Latency Time (Read)"); write=getDeltaPS(disk,"Latency Time (Write)"); return expr read + write;}'
FUNC2='function getAllDeltasPS(disk) {rReq_PS=getDeltaPS(disk,"Operations (Read)"); wReq_PS=getDeltaPS(disk,"Operations (Write)"); rKB_PS=getDeltaPS(disk,"Bytes (Read)")/1024; wKB_PS=getDeltaPS(disk,"Bytes (Write)")/1024; avgWaitMillis=getLatency(disk);}'
SCRIPT="$HEADERIZE $FILTER $FUNC1 $LATENCY $FUNC2 END {$FORMAT for (device in devices) {getAllDeltasPS(device); $PRINTF}}"
# shellcheck disable=SC2086
$CMD | tee "$TEE_DEST" | awk $DEFINE "$SCRIPT" header="$HEADER"
echo "Cmd = [$CMD]; | awk $DEFINE '$SCRIPT' header=\"$HEADER\"" >> "$TEE_DEST"
exit 0
fi
# shellcheck disable=SC2086
$CMD | tee "$TEE_DEST" | $AWK $DEFINE "$FILTER $PRINTF"
echo "Cmd = [$CMD]; | $AWK $DEFINE '$FILTER'" >> "$TEE_DEST"