Old Wangxue Linux-rrdtool

installation of Rrdtool:

Rrdtool-1.

Rrdtool-devel-1.

Rrdtool-perl-1.

Database for data collection:

Rrdtoll Create TEST.RRD--step 5--start-1ds:testds:gauge:8:0:u rra:averge:0.5:1:17280 rra:averge:.5:10:3456 rra:averge:.5:100:1210

Create TEST.RRD: Creating

--step 5: time S

--start-1: When to start s default 10

Ds:testds:gauge:8:0:u: Name: Type : maximum wait Time: Minimum number: Maximum

rra:averge:0.5:1:17280: average: Find out how many marks are unknown: How much to save (5s a day can collect 86400 )

Get Data:

Rrdtool Update

Drawing:

Rrdtool GRAPH/GRAPHV filename

next take MySQL as an example

Database for data collection:

Rrdtoll Create mysql.rrd--step 3ds:myselect:counter:5:0:u rra:averge:0.5:1:28800 rra:max:0.5:10:2880 RRA:LAST:0. 5:1:28800

script to collect Data : Vim getselect.sh

#!/bin/bash

While True;do

select= "Mysql–batch–e ' SHOW GLOBAL statuslike ' Com_select ' | awk '/com_select/[print [$] ' "

Rrdtool update mysql.rrd N: $SELECT

Sleep 3

Done

to initiate query data to MySQL:

Build diagram:

Rrdtool graph Mysql.pn–s Some point-t ' mysqlselect ' –v ' SELECTS/3 ' def:select3=mysql.rrd:myselect:average:step=3 def:max30=mysql.rrd:myselect:max:step=30line1:select3#ff0000: ' Select ' Gprint:max: "maximum\:%6.21f"

Old Wangxue Linux-rrdtool