collect-iostat.sh

#!/bin/sh

PROGRAM_DIR="`dirname \"$0\"`"
. "$PROGRAM_DIR/utils.sh"
load_config_file "$PROGRAM_DIR/performance-monitor.cfg"
load_config_file /etc/performance-monitor.cfg
handle_command_line_options "$@"
if [ -z "$INFLUXDB_BASE_URL" ] || [ -z "$INFLUXDB_DB_NAME" ]; then
	echo "INFLUXDB_BASE_URL and INFLUXDB_DB_NAME must be set" 1>&2
	exit 1
fi
if ! printf %s "$INFLUXDB_BASE_URL" | grep -q -e "^http://" -e "^https://"; then
	echo "INFLUXDB_BASE_URL doesn't contain a supported protocol" 1>&2
	exit 1
fi
[ -n "${INFLUXDB_BASE_URL##*/}" ] && INFLUXDB_BASE_URL="$INFLUXDB_BASE_URL/"
[ -z "$HTTP_CLIENT" ] && check_http_client
[ -z "$INTERVAL" ] && INTERVAL=5
[ -n "$INTERFACE" ] && set_hostname_from_interface "$INTERFACE"
[ -z "$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
	[ "$1" = tps ] && continue
	http_post "${INFLUXDB_BASE_URL}write?db=$INFLUXDB_DB_NAME" \
		"iostat,host=$HOSTNAME,device=all tps=$1,rtps=$2,wtps=$3,read_rate=$4,write_rate=$5"
done