collect-iostat.sh

#!/bin/sh

PROGRAM_DIR="`dirname \"$0\"`"
. "$PROGRAM_DIR/utils.sh"

interval=5
while getopts i:I:n: c
do case "$c" in
	i)
		interval="$OPTARG"
		;;
	I)
		HOSTNAME="`get_ip_address \"$OPTARG\"`"
		if [ -z "$HOSTNAME" ]; then
			printf "Cannot get IP address from interface '%s'\\n" "$OPTARG" 1>&2
			exit 1
		fi
		;;
	n)
		HOSTNAME="$1"
		;;
	\?)
		printf "Usage: %s [-i <interval>] [-I <interface>] [-n <hostname>]\\n" "$0" 1>&2
		exit 255
		;;
esac done
[ -z "$HOSTNAME" ] && HOSTNAME="`hostname`"

export LC_TIME=C
sar -b "$interval" | sed -ur -e "/^[0-9]{2}:[0-9]{2}:[0-9]{2}/!d" -e "s/[0-9]{2}:[0-9]{2}:[0-9]{2}.{4}//" | while read -r line; do
	set -- $line
	if [ $# != 5 ]; then
		echo "data error: # $# != 5" 1>&2
		continue
	fi
	[ "$1" = tps ] && continue
	http_post "http://172.20.0.74:8086/write?db=mydb" \
		"iostat,host=$HOSTNAME,device=all tps=$1,rtps=$2,wtps=$3,read_rate=$4,write_rate=$5"
done