Setting up monitoring using rrdtool (and rrdcollect): Difference between revisions
(Draft notes on rrdtool and rrdcollect) |
(→Stat: Fetch more cpu-info) |
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DEF:cpu_system=/var/lib/rrdtool/stat.rrd:cpu_system:AVERAGE \ | DEF:cpu_system=/var/lib/rrdtool/stat.rrd:cpu_system:AVERAGE \ | ||
DEF:cpu_idle=/var/lib/rrdtool/stat.rrd:cpu_idle:AVERAGE \ | DEF:cpu_idle=/var/lib/rrdtool/stat.rrd:cpu_idle:AVERAGE \ | ||
DEF:cpu_iowait=/var/lib/rrdtool/stat.rrd:cpu_iowait:AVERAGE \ | |||
DEF:cpu_irq=/var/lib/rrdtool/stat.rrd:cpu_irq:AVERAGE \ | |||
DEF:cpu_softirq=/var/lib/rrdtool/stat.rrd:cpu_softirq:AVERAGE \ | |||
DEF:ctxt=/var/lib/rrdtool/stat.rrd:ctxt:AVERAGE \ | DEF:ctxt=/var/lib/rrdtool/stat.rrd:ctxt:AVERAGE \ | ||
DEF:page_in=/var/lib/rrdtool/stat.rrd:page_in:AVERAGE \ | DEF:page_in=/var/lib/rrdtool/stat.rrd:page_in:AVERAGE \ |
Revision as of 11:07, 14 March 2012
This material is work-in-progress ... Do not follow instructions here until this notice is removed. |
Todo: Create/Modify/Verify rrdcollect and move it from 'testing' to 'main'
Install programs
apk add rrdtool rrdcollect
Create rrd-databases
As we will use rrdcollect to collect our data for us, we will create all databases that the default config for rrdcollect tries to use.
stat.rrd
rrdtool create /var/lib/rrdtool/stat.rrd \ --step 60 \ DS:cpu_user:COUNTER:120:0:U \ DS:cpu_nice:COUNTER:120:0:U \ DS:cpu_system:COUNTER:120:0:U \ DS:cpu_idle:COUNTER:120:0:U \ DS:ctxt:COUNTER:120:0:U \ DS:page_in:COUNTER:120:0:U \ DS:page_out:COUNTER:120:0:U \ DS:processes:COUNTER:120:0:U \ DS:swap_in:COUNTER:120:0:U \ DS:swap_out:COUNTER:120:0:U \ RRA:AVERAGE:0.5:1:720 \ RRA:MAX:0.5:1:720
memory.rrd
rrdtool create /var/lib/rrdtool/memory.rrd \ --step 60 \ DS:mem_used:GAUGE:120:0:U \ DS:mem_free:GAUGE:120:0:U \ DS:mem_shared:GAUGE:120:0:U \ DS:mem_buffers:GAUGE:120:0:U \ DS:mem_cached:GAUGE:120:0:U \ DS:swap_used:GAUGE:120:0:U \ RRA:AVERAGE:0.5:1:720 \ RRA:MAX:0.5:1:720
eth0.rrd
rrdtool create /var/lib/rrdtool/eth0.rrd \ --step 60 \ DS:bytes_in:COUNTER:120:0:U \ DS:pkts_in:COUNTER:120:0:U \ DS:bytes_out:COUNTER:120:0:U \ DS:pkts_out:COUNTER:120:0:U \ RRA:AVERAGE:0.5:1:720 \ RRA:MAX:0.5:1:720
(The default rrdcollect.conf tries to fetch data for eth1. With small modifications of the above command can be used to create such 'eth1.rrd')
Note: If you chose to change the "--step 60" which specifies the base interval in seconds with which data will be fed into the RRD.
Make sure to change the 'step' value in /etc/rrdcollect/rrdcollect.conf to reflect your changes above.
Make sure to change the 'step' value in /etc/rrdcollect/rrdcollect.conf to reflect your changes above.
Gather information and put it in the RRD
rc-service rrdcollect start
Create graphs based on the rrd's
In the below examples you will notice that the .png file is exported to "/var/www/localhost/htdocs/".
You would need to either create /var/www/localhost/htdocs/ or change the path for the images.
Stat
rrdtool graph /var/www/localhost/htdocs/stat.png --start -1800 \ -a PNG -t "Stat" --vertical-label "bits/s" \ -w 1260 -h 400 -r \ DEF:cpu_user=/var/lib/rrdtool/stat.rrd:cpu_user:AVERAGE \ DEF:cpu_nice=/var/lib/rrdtool/stat.rrd:cpu_nice:AVERAGE \ DEF:cpu_system=/var/lib/rrdtool/stat.rrd:cpu_system:AVERAGE \ DEF:cpu_idle=/var/lib/rrdtool/stat.rrd:cpu_idle:AVERAGE \ DEF:cpu_iowait=/var/lib/rrdtool/stat.rrd:cpu_iowait:AVERAGE \ DEF:cpu_irq=/var/lib/rrdtool/stat.rrd:cpu_irq:AVERAGE \ DEF:cpu_softirq=/var/lib/rrdtool/stat.rrd:cpu_softirq:AVERAGE \ DEF:ctxt=/var/lib/rrdtool/stat.rrd:ctxt:AVERAGE \ DEF:page_in=/var/lib/rrdtool/stat.rrd:page_in:AVERAGE \ DEF:page_out=/var/lib/rrdtool/stat.rrd:page_out:AVERAGE \ DEF:processes=/var/lib/rrdtool/stat.rrd:processes:AVERAGE \ DEF:swap_in=/var/lib/rrdtool/stat.rrd:swap_in:AVERAGE \ DEF:swap_out=/var/lib/rrdtool/stat.rrd:swap_out:AVERAGE \ AREA:cpu_user#D7CC00:cpu_user \ AREA:cpu_nice#D7CC00:cpu_nice \ LINE2:cpu_system#D73600:cpu_system \ LINE2:cpu_idle#D73600:cpu_idle \ LINE2:ctxt#0101D6:ctxt \ LINE2:page_in#0101D6:page_in \ LINE2:page_out#D73600:page_out \ LINE2:processes#D73600:processes \ LINE2:swap_in#D73600:swap_in \ LINE2:swap_out#D73600:swap_out
Memory
rrdtool graph /var/www/localhost/htdocs/memory.png --start -1800 \ -a PNG -t "Memory" --vertical-label "" \ -w 1260 -h 400 -r \ DEF:mem_used=/var/lib/rrdtool/memory.rrd:mem_used:AVERAGE \ DEF:mem_free=/var/lib/rrdtool/memory.rrd:mem_free:AVERAGE \ DEF:mem_shared=/var/lib/rrdtool/memory.rrd:mem_shared:AVERAGE \ DEF:mem_buffers=/var/lib/rrdtool/memory.rrd:mem_buffers:AVERAGE \ DEF:mem_cached=/var/lib/rrdtool/memory.rrd:mem_cached:AVERAGE \ DEF:swap_used=/var/lib/rrdtool/memory.rrd:swap_used:AVERAGE \ AREA:mem_used#D7CC00:mem_used \ AREA:mem_free#D7CC00:mem_free \ LINE2:mem_shared#D73600:mem_shared \ LINE2:mem_buffers#D73600:mem_buffers \ LINE2:mem_cached#0101D6:mem_cached \ LINE2:swap_used#0101D6:swap_used
eth0
rrdtool graph /var/www/localhost/htdocs/eth0.png --start -1h \ -a PNG -t "eth0" --vertical-label "bits/s" \ -w 1260 -h 400 -r \ DEF:bytes_in=/var/lib/rrdtool/eth0.rrd:bytes_in:AVERAGE \ DEF:bytes_out=/var/lib/rrdtool/eth0.rrd:bytes_out:AVERAGE \ CDEF:bits_in=bytes_in,8,\* \ CDEF:bits_out=bytes_out,-8,\* \ AREA:bits_in#339933:bits_in \ AREA:bits_out#aa3333:bits_out \ HRULE:0#000000
rrdtool graph /var/www/localhost/htdocs/eth0pkt.png --start -1800 \ -a PNG -t "eth0" --vertical-label "packets" \ -w 1260 -h 400 -r \ DEF:pkts_in=/var/lib/rrdtool/eth0.rrd:pkts_in:AVERAGE \ DEF:pkts_out=/var/lib/rrdtool/eth0.rrd:pkts_out:AVERAGE \ CDEF:pkts_out_negative=pkts_out,-1,\* \ LINE2:pkts_in#006600:pkts_in \ LINE2:pkts_out_negative#D73600:pkts_out \ HRULE:0#000000