mirror of
https://github.com/munin-monitoring/contrib.git
synced 2018-11-08 00:59:34 +01:00
c81c20ab3b
The following issues were fixed: * comparison too broad (e.g. "0" misinterpreted as "true") * python: comparing string with number (is never equal in python) * unwanted non-zero exitcode (compound command "&&" as last command in shell code block (e.g. "case" or "if" branch)) * access to unset variable (shell style issue)
345 lines
8.6 KiB
Bash
Executable File
345 lines
8.6 KiB
Bash
Executable File
#!/bin/bash
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: << =cut
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=head1 NAME
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io_disk - Multigraph plugin to monitor disks for Solaris.
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These functions are implemented:
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ops : similar to iostat r/s, w/s
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bytes : similar to iostat kr/s, kw/s
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busy : similar to iostat %b, %w (%w usually indicates 0 in Sol10,11)
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queue : similar to iostat actv, wait
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latency : similar to iostat asvc_t, wsvc_t
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size : average io size
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This plugin is improved from Solaris io_busy_, io_ops_, io_bytes_ plugins.
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Any device found in /usr/bin/kstat can be monitored.
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Tested with Solaris 10 and 11, and it should work with Solaris 8, 9.
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=head1 CONFIGURATION
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Make symlink:
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cd /path/to/munin/etc/plugins
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ln -s /path/to/munin/lib/plugins/io_disk .
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The RRD files generated by io_busy_, io_ops_, io_bytes_ can be taken over
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by this plugin.
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Thus, please remove symlinks of those plugins before using this plugin.
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By default, this plugin monitors disk devices. And also it can monitor
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NFS and Tape devices as much as io_* plugins with setting environments.
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Note that instance names of nfs (e.g. nfs1) can be changed after reboot or
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remount, this plugin may not monitor nfs properly. (same as original ones)
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=head1 ENVIRONMENT VARIABLES
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env.class - kstat class. See man kstat -c option.
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example: env.class /disk|nfs|tape/
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default: disk
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env.module - Module name. Only used in internal graph name.
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example: env.module something
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default: sd
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If you would not like to take over RRDs generated by io_*_sd plugins,
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please change it to another name.
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And also, if you would like to take over RRDs of nfs, tape devices,
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please set it 'nfs' or 'tape' (and set env.class, env.module_regex).
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It may be good to link like ln -s /path/to/io_disk io_nfs if necessary.
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env.module_regex - kstat module. See man kstat -m option.
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example: env.module_regex /^(s?sd|vdc|zvblk|dad|md|nfs|st)$/
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default: /^(s?sd|vdc|zvblk|dad|md)$/
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env.title_type - Device type shown in graph title.
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example: env.title_type Disk Device, NFS, Tape
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default: Disk Device
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env.exclude - Device instance name(s) to exclude seperated by white-space.
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example: env.exclude sd0 ssd1
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default: none
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env.graph_width - Graph width in pixel
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example: env.graph_width 450
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default: none (usually 400)
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=head1 AUTHOR
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Unknown Author
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Improved by K.Cima https://github.com/shakemid
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=head1 LICENSE
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GPLv2
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=head1 MAGIC MARKERS
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#%# family=auto
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#%# capabilities=autoconf
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=cut
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# Include plugin.sh
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. "${MUNIN_LIBDIR:-}/plugins/plugin.sh"
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is_multigraph "$@"
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# Shell options
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set -o nounset # Like perl use strict;
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# Set environment variables
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plugin_name=io
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functions='ops bytes busy queue latency size'
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: "${class:=disk}"
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: "${module:=sd}"
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: "${module_regex:=/^(s?sd|vdc|zvblk|dad|md)\$/}"
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: "${title_type:=Disk Device}"
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: "${exclude:=}"
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: "${graph_width:=}"
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# Create map of instance name (e.g. sd0) and logical device name (e.g. c0t0d0)
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# Example:
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# name_sd1=c0t0d0
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# name_ssd2=c0tAB_1234d0 (shorten long target)
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# ...
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instance_names=$( iostat -x | sed -e '1,2d' | awk '{print $1}' \
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| sed -e 's/^/name_/' )
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logical_device_names=$( iostat -xn | sed -e '1,2d' | awk '{print $NF}' \
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| sed -e 's/^\(c[0-9]*\)\(t.\{2\}\).*\(.\{4\}\)\(d[0-9]*\)$/\1\2_\3\4/' )
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declare $( paste -d= <( echo "$instance_names" ) <( echo "$logical_device_names" ) )
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# Functions
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preconfig() {
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local func
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func=$1
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case "$func" in
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ops)
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conf_title='I/O Operations'
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conf_gargs='--base 1000'
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conf_vlabel='Ops per second write (-) / read (+)'
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conf_in=reads
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conf_out=writes
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;;
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bytes)
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conf_title='I/O Throughput'
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conf_gargs='--base 1024'
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conf_vlabel='Bytes per second write (-) / read (+)'
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conf_in=nread
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conf_out=nwritten
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;;
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busy)
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conf_title='Busy & Wait'
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conf_gargs='--base 1000 --lower-limit 0 --upper-limit 100'
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conf_vlabel='% wait (-) / busy (+)'
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conf_in=rtime
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conf_out=wtime
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;;
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queue)
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conf_title='Queue Length'
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conf_gargs='--base 1000'
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conf_vlabel='Queue length wait (-) / actv (+)'
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conf_in=rlentime
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conf_out=wlentime
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;;
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latency)
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conf_title='Latency'
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conf_gargs='--base 1000'
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conf_vlabel='Seconds wsvc_t (-) / asvc_t (+)'
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conf_in=rlentime
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conf_out=wlentime
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;;
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size)
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conf_title='I/O Size'
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conf_gargs='--base 1024'
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conf_vlabel='Average size write (-) / read (+)'
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conf_in=nread
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conf_out=nwritten
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;;
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*)
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echo "Unknown function: $func"
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exit 1
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;;
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esac
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}
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is_excluded() {
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local arg i
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arg=$1
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for i in ${exclude}
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do
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if [ "$arg" = "$i" ]; then
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return 0
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fi
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done
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return 1
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}
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do_config() {
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local func dev ref devname stat
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func=$1
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preconfig "$func"
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echo "multigraph ${plugin_name}_${func}_${module}"
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echo "graph_title $title_type $conf_title"
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echo 'graph_category disk'
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echo "graph_args $conf_gargs"
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echo "graph_vlabel $conf_vlabel"
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if [ -n "$graph_width" ]; then
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echo "graph_width $graph_width"
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fi
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# Get device instance names by kstat
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kstat -p -c "$class" -m "$module_regex" -s "/^${conf_in}\$/" \
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| sed 's/:/ /g' | awk '{ print $3 }' \
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| while read -r dev
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do
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is_excluded "$dev" && continue
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# Replace instance name to logical device name if exists
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ref="name_$dev"
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devname=${!ref:-} # ${!varname} means indirect evaluation (similar to eval)
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# reads and writes are necessary to calculate latency, size
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case "$func" in
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latency|size)
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for stat in reads writes
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do
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echo "${dev}_${stat}.label dummy"
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echo "${dev}_${stat}.graph no"
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echo "${dev}_${stat}.type DERIVE"
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echo "${dev}_${stat}.min 0"
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done
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;;
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esac
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# Set CDEF
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case "$func" in
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busy)
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conf_in_cdef="${dev}_${conf_in},100,*"
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conf_out_cdef="${dev}_${conf_out},100,*"
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;;
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latency)
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# rlentime / ( reads + writes )
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conf_in_cdef="${dev}_${conf_in},${dev}_reads,${dev}_writes,+,/"
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conf_out_cdef="${dev}_${conf_out},${dev}_reads,${dev}_writes,+,/"
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;;
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size)
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conf_in_cdef="${dev}_${conf_in},${dev}_reads,/"
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conf_out_cdef="${dev}_${conf_out},${dev}_writes,/"
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;;
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*)
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conf_in_cdef=
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conf_out_cdef=
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;;
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esac
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# Print data attributes
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echo "${dev}_${conf_out}.label dummy"
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echo "${dev}_${conf_out}.graph no"
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echo "${dev}_${conf_out}.type DERIVE"
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echo "${dev}_${conf_out}.min 0"
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if [ -n "$conf_out_cdef" ]; then
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echo "${dev}_${conf_out}.cdef ${conf_out_cdef}"
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fi
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echo "${dev}_${conf_in}.label ${devname:-${dev}}"
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echo "${dev}_${conf_in}.negative ${dev}_${conf_out}"
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echo "${dev}_${conf_in}.type DERIVE"
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echo "${dev}_${conf_in}.min 0"
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if [ -n "$conf_in_cdef" ]; then
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echo "${dev}_${conf_in}.cdef ${conf_in_cdef}"
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fi
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done
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echo
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}
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do_fetch() {
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local func stat_regex dev stat value
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func=$1
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preconfig "$func"
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echo "multigraph ${plugin_name}_${func}_${module}"
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case "$func" in
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latency|size)
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stat_regex="/^($conf_in|$conf_out|reads|writes)\$/"
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;;
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*)
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stat_regex="/^($conf_in|$conf_out)\$/"
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;;
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esac
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# Get device instance names, stat names and values by kstat
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# kstat output example:
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# $ kstat -p -c disk -m '/^sd$/' -s '/^reads$/'
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# sd:0:sd0:reads 51432610
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# sd:1:sd1:reads 52671435
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# ...
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kstat -p -c "$class" -m "$module_regex" -s "$stat_regex" \
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| sed 's/:/ /g' | awk '{ print $3,$4,$5 }' \
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| while read -r dev stat value
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do
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is_excluded "$dev" && continue
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echo "${dev}_${stat}.value ${value%.*}"
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done
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echo
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}
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autoconf() {
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if [ -x /usr/bin/kstat ]; then
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echo yes
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exit 0
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else
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echo "no (/usr/bin/kstat not found)"
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exit 0
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fi
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}
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config() {
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local func
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for func in $functions
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do
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do_config "$func"
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done
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}
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fetch() {
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local func
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for func in $functions
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do
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do_fetch "$func"
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done
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}
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# Main
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case ${1:-} in
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autoconf)
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autoconf
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;;
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config)
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config
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if [ "${MUNIN_CAP_DIRTYCONFIG:-0}" = "1" ]; then fetch; fi
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;;
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*)
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fetch
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;;
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esac
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exit 0
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