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# |
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# i-scream central monitoring system |
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# http://www.i-scream.org.uk |
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# Copyright (C) 2000-2002 i-scream |
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# |
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# This program is free software; you can redistribute it and/or |
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# possibly make more configurable? |
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# -- allow configurable periods of graphs |
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# -- comments, types, etc |
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# -- move all to external config file |
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my($version) = '$Id$'; |
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|
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$| = 1; |
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|
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use strict; |
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use Getopt::Std; |
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use RRDs; |
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# Base directory for images |
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# (a directory will be constructed for each host under this) |
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my($imgdir) = "/home/pkg/iscream/public_html/graphs"; |
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# define variables that will be read from the config |
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# nb. keep this insync with the config file! |
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use vars qw{ |
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$imgdir $rrddir |
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$maxrrdage $maximgage $deleterrds $deleteimgs |
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$hex_slash $hex_underscore |
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$rrdstep $retry_wait |
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$verbose $quiet |
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}; |
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# Location of RRD databases |
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my($rrddir) = "/u1/i-scream/databases"; |
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# default locate of the config file |
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my($configfile) = "rrdgraphing.conf"; |
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# / converted to a decimal then hex'd |
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my($hex_slash) = "_2f"; |
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# _ converted to a decimal then hex'd |
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my($hex_underscore) = "_5f"; |
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# check for command line arguments |
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my(%opts); |
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my($ret) = getopts('hvqVc:', \%opts); |
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# maximum age (last modified) before an rrd or graph get cleaned up |
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# (in seconds) |
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my($maxrrdage) = 3600; # 1 hour |
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my($maximgage) = 3600; # 1 hour |
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# if invalid argument given, $ret will not be 1 |
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&usage() if $ret != 1; |
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# delete rrd's when they get cleaned up? |
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# if unset, will just ignore the rrd's |
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# - usually best to leave this off, we don't want to delete useful rrds :) |
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my($deleterrds) = 0; |
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# first process the arguments which might mean we exit now |
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# delete graphs when they get cleaned up? |
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# if unset, won't bother checking at all |
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# - usually best to leave this on |
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my($deleteimgs) = 1; |
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|
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# -h is usage |
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if($opts{h}) { |
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&usage(); |
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} |
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# -V is version |
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if($opts{V}) { |
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print "graph.pl version: $version\n"; |
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exit(1); |
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} |
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|
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# Then try getting the config |
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|
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# -c specifies the config file location |
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if($opts{c}) { |
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$configfile = $opts{c}; |
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} |
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# suck in the config |
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&log("reading config from $configfile\n"); |
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do $configfile; |
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|
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# Then any options we might want to override the config with |
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# -v is verbose |
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if($opts{v}) { |
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$verbose = $opts{v}; |
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} |
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# -q is verbose |
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if($opts{q}) { |
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$quiet = $opts{q}; |
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# if we're meant to be quiet, we can hardly be verbose! |
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$verbose = 0; |
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} |
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|
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# Read the contents of the base directory |
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# and pull out the list of subdirectories (except . and .. :) |
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opendir(DIR, $rrddir); |
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if($deleterrds) { |
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# if so, delete it |
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unlink("$rrddir/$machine/$rrd"); |
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&log("deleted old rrd $rrddir/$machine/$rrd\n"); |
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} |
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else { |
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&log("ignored old rrd $rrddir/$machine/$rrd\n"); |
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} |
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# no more processing required for this rrd |
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next; |
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} |
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if($rrd =~ /^(cpu)\.rrd$/) { |
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my(@data); |
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my(@rawdata); |
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push @data, "LINE2:$1:idle:idle#00FF00:idle cpu"; |
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push @data, "LINE2:$1:user:user#0000FF:user cpu"; |
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push @data, "LINE2:$1:kernel:kernel#00FFFF:kernel cpu"; |
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push @data, "LINE2:$1:swap:swap#FF00FF:swap cpu"; |
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push @data, "LINE2:$1:iowait:iowait#FF0000:iowait cpu"; |
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push @data, "LINE2:$1:idle:idle#00FF00:OK:idle cpu "; |
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push @data, "LINE2:$1:user:user#0000FF:OK:user cpu "; |
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push @data, "LINE2:$1:kernel:kernel#00FFFF:OK:kernel cpu"; |
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push @data, "LINE2:$1:swap:swap#FF00FF:OK:swap cpu "; |
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push @data, "LINE2:$1:iowait:iowait#FF0000:OK:iowait cpu"; |
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push @rawdata, "--upper-limit=100"; |
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&makegraph($machine, $1, "CPU Usage for $machine", \@data, \@rawdata); |
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&makegraph($machine, $1, "CPU Usage for $machine", "% cpu time", \@data, \@rawdata); |
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} |
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if($rrd =~ /^(mem)\.rrd$/) { |
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my(@data); |
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my(@rawdata); |
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# we don't actually want to display free memory, |
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# although we need it to do inuse... |
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push @data, "NONE:$1:free:free#CCCCFF:free memory"; |
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push @data, "LINE2:$1:total:total#0000FF:total memory"; |
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# calculate inuse |
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push @rawdata, "CDEF:inuse=total,free,-"; |
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# we don't actually want to display free or total memory, |
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# although we need it to work out peruse... |
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push @data, "NONE:$1:free:free#CCCCFF:NONE:free memory"; |
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push @data, "NONE:$1:total:total#0000FF:NONE:total memory\\n"; |
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# calculate peruse - note that we only use 'free' if it's less than total |
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# (this is to avoid negative percentages :) |
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push @rawdata, "CDEF:peruse=total,free,total,LT,free,0,IF,-,total,/,100,*"; |
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# and add it to the graph |
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push @rawdata, "AREA:inuse#CCCCFF:memory in use"; |
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push @rawdata, "AREA:peruse#CCCCFF:% memory in use"; |
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push @rawdata, "--upper-limit=100"; |
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push @rawdata, "--base=1024"; |
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&makegraph($machine, $1, "Memory Usage for $machine", \@data, \@rawdata); |
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# add some nice values to the legend |
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&addlegend(\@rawdata, "peruse"); |
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# put the total memory on the graph so we can map percentages to real values |
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push @rawdata, "GPRINT:total:LAST:Current total memory\\: \%.2lf %sb\\c"; |
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&makegraph($machine, $1, "Memory Usage for $machine", "% memory in use", \@data, \@rawdata); |
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} |
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if($rrd =~ /^(load)\.rrd$/) { |
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my(@data); |
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< |
push @data, "LINE2:$1:load1:load1#CCCCFF:1 minute load average"; |
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push @data, "LINE2:$1:load5:load5#7777FF:5 minute load average"; |
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push @data, "LINE2:$1:load15:load15#0000FF:15 minute load average"; |
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&makegraph($machine, $1, "Loads for $machine", \@data); |
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push @data, "LINE2:$1:load1:load1#CCCCFF:OK: 1 min load average"; |
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push @data, "LINE2:$1:load5:load5#7777FF:OK: 5 min load average"; |
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push @data, "LINE2:$1:load15:load15#0000FF:OK:15 min load average"; |
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&makegraph($machine, $1, "Loads for $machine", "load average", \@data); |
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} |
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if($rrd =~ /^(proc)\.rrd$/) { |
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my(@data); |
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push @data, "LINE2:$1:cpu:cpu#00FF00:cpu processes"; |
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push @data, "LINE2:$1:sleeping:sleeping#0000FF:sleeping processes"; |
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push @data, "LINE2:$1:stopped:stopped#00FFFF:stopped processes"; |
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push @data, "LINE2:$1:total:total#FF00FF:total processes"; |
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push @data, "LINE2:$1:zombie:zombie#FF0000:zombie processes"; |
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&makegraph($machine, $1, "Processes on $machine", \@data); |
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push @data, "LINE2:$1:cpu:cpu#00FF00:OK:cpu processes "; |
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push @data, "LINE2:$1:sleeping:sleeping#0000FF:OK:sleeping processes"; |
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push @data, "LINE2:$1:stopped:stopped#00FFFF:OK:stopped processes "; |
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push @data, "LINE2:$1:total:total#FF00FF:OK:total processes "; |
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push @data, "LINE2:$1:zombie:zombie#FF0000:OK:zombie processes "; |
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&makegraph($machine, $1, "Processes on $machine", "no. of processes", \@data); |
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} |
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if($rrd =~ /^(swap)\.rrd$/) { |
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my(@data); |
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my(@rawdata); |
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< |
# we don't actually want to display free swap, |
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# although we need it to do inuse... |
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< |
push @data, "NONE:$1:free:free#CCCCFF:free swap"; |
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< |
push @data, "LINE2:$1:total:total#0000FF:total swap"; |
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< |
# calculate inuse |
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push @rawdata, "CDEF:inuse=total,free,-"; |
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> |
# we don't actually want to display free or total swap, |
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# although we need it to work out peruse... |
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> |
push @data, "NONE:$1:free:free#CCCCFF:NONE:free swap"; |
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> |
push @data, "NONE:$1:total:total#0000FF:NONE:total swap\\n"; |
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> |
# calculate peruse - note that we only use 'free' if it's less than total |
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# (this is to avoid negative percentages :) |
| 191 |
> |
push @rawdata, "CDEF:peruse=total,free,total,LT,free,0,IF,-,total,/,100,*"; |
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# and add it to the graph |
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< |
push @rawdata, "AREA:inuse#CCCCFF:swap in use"; |
| 193 |
> |
push @rawdata, "AREA:peruse#CCCCFF:% swap in use"; |
| 194 |
> |
push @rawdata, "--upper-limit=100"; |
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push @rawdata, "--base=1024"; |
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< |
&makegraph($machine, $1, "Swap Usage for $machine", \@data, \@rawdata); |
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> |
# add some nice values to the legend |
| 197 |
> |
&addlegend(\@rawdata, "peruse"); |
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> |
# put the total swap on the graph so we can map percentages to real values |
| 199 |
> |
push @rawdata, "GPRINT:total:LAST:Current total swap\\: \%.2lf %sb\\c"; |
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> |
&makegraph($machine, $1, "Swap Usage for $machine", "% swap in use", \@data, \@rawdata); |
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} |
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if($rrd =~ /^(users)\.rrd$/) { |
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my(@data); |
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< |
push @data, "AREA:$1:count:count#CCCCFF:user count"; |
| 205 |
< |
&makegraph($machine, $1, "User Count for $machine", \@data); |
| 204 |
> |
push @data, "AREA:$1:count:count#CCCCFF:OK:user count"; |
| 205 |
> |
&makegraph($machine, $1, "User Count for $machine", "no. of users", \@data); |
| 206 |
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} |
| 207 |
< |
if($rrd =~ /^(disk)-(\S+).rrd$/) { |
| 207 |
> |
if($rrd =~ /^(paging)\.rrd$/) { |
| 208 |
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my(@data); |
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+ |
push @data, "LINE2:$1:pageins:pageins#00FF00:OK:pages paged in "; |
| 210 |
+ |
push @data, "LINE2:$1:pageouts:pageouts#0000FF:OK:pages paged out"; |
| 211 |
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&makegraph($machine, $1, "Paging on $machine", "pages per second", \@data); |
| 212 |
+ |
} |
| 213 |
+ |
if($rrd =~ /^(disk)-(\S+)\.rrd$/) { |
| 214 |
+ |
my(@data); |
| 215 |
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my(@rawdata); |
| 216 |
< |
push @data, "LINE2:$1-$2:kbytes:kbytes#0000FF:total size"; |
| 217 |
< |
push @data, "AREA:$1-$2:used:used#CCCCFF:used"; |
| 216 |
> |
# we need this lot for our calculations, but we'll never show them |
| 217 |
> |
push @data, "NONE:$1-$2:total:total#0000FF:NONE:total size\\n"; |
| 218 |
> |
push @data, "NONE:$1-$2:used:used#CCCCFF:NONE:used space"; |
| 219 |
> |
push @data, "NONE:$1-$2:totalinodes:totalinodes#000000:NONE:total inodes"; |
| 220 |
> |
push @data, "NONE:$1-$2:freeinodes:freeinodes#000000:NONE:free inodes"; |
| 221 |
> |
# calculate peruse, add it to the graph, and add a legend |
| 222 |
> |
push @rawdata, "CDEF:peruse=used,total,/,100,*"; |
| 223 |
> |
push @rawdata, "AREA:peruse#CCCCFF:% disk used "; |
| 224 |
> |
&addlegend(\@rawdata, "peruse"); |
| 225 |
> |
# put the total space on the graph so we can map percentages to real values |
| 226 |
> |
push @rawdata, "GPRINT:total:LAST:Current total space\\: \%.2lf %sb\\c"; |
| 227 |
> |
# calculate perinodeuse, add it to the graph, and add a legend |
| 228 |
> |
push @rawdata, "CDEF:perinodeuse=totalinodes,freeinodes,totalinodes,LT,freeinodes,0,IF,-,totalinodes,/,100,*"; |
| 229 |
> |
push @rawdata, "LINE2:perinodeuse#FF4444:% inodes used"; |
| 230 |
> |
push @rawdata, "--upper-limit=100"; |
| 231 |
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push @rawdata, "--base=1024"; |
| 232 |
+ |
&addlegend(\@rawdata, "perinodeuse"); |
| 233 |
+ |
# put the total inodes on the graph so we can map percentages to real values |
| 234 |
+ |
push @rawdata, "GPRINT:totalinodes:LAST:Current total inodes\\: \%.2lf %s\\c"; |
| 235 |
+ |
# some name tidting |
| 236 |
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my($type) = $1; |
| 237 |
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my($name) = $2; |
| 238 |
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my($nicename) = $2; |
| 239 |
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$nicename =~ s/$hex_slash/\//g; |
| 240 |
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$nicename =~ s/$hex_underscore/_/g; |
| 241 |
< |
&makegraph($machine, "$type-$name", "Disk Usage for $machine on $nicename", \@data, \@rawdata); |
| 241 |
> |
&makegraph($machine, "$type-$name", "Disk Usage for $machine on $nicename", "% usage", \@data, \@rawdata); |
| 242 |
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} |
| 243 |
+ |
if($rrd =~ /^(diskio)-(\S+)\.rrd$/) { |
| 244 |
+ |
my(@data); |
| 245 |
+ |
my(@rawdata); |
| 246 |
+ |
push @data, "LINE2:$1-$2:rbytes:rbytes#00FF00:OK:read bytes "; |
| 247 |
+ |
push @data, "LINE2:$1-$2:wbytes:wbytes#0000FF:OK:write bytes"; |
| 248 |
+ |
push @rawdata, "--base=1024"; |
| 249 |
+ |
&makegraph($machine, "$1-$2", "Disk IO for $machine on $2", "bytes per second", \@data, \@rawdata); |
| 250 |
+ |
} |
| 251 |
+ |
if($rrd =~ /^(net)-(\S+)\.rrd$/) { |
| 252 |
+ |
my(@data); |
| 253 |
+ |
my(@rawdata); |
| 254 |
+ |
push @data, "LINE2:$1-$2:rx:rx#00FF00:OK:received bytes "; |
| 255 |
+ |
push @data, "LINE2:$1-$2:tx:tx#0000FF:OK:transfered bytes"; |
| 256 |
+ |
push @rawdata, "--base=1024"; |
| 257 |
+ |
&makegraph($machine, "$1-$2", "Network IO for $machine on $2", "bytes per second", \@data, \@rawdata); |
| 258 |
+ |
} |
| 259 |
|
# probably a queue with a name like this :) |
| 260 |
|
if($rrd =~ /^(\d+)_0\.rrd$/) { |
| 261 |
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my(@data); |
| 263 |
|
my($baserrd) = $1; |
| 264 |
|
my($i) = 0; |
| 265 |
|
while( -f "$rrddir/$machine/$baserrd\_$i.rrd" ) { |
| 266 |
< |
push @data, "LINE2:$baserrd\_$i:size:size$i" . &get_colour($i) . ":queue$i size "; |
| 266 |
> |
push @data, "LINE2:$baserrd\_$i:size:size$i" . &get_colour($i) . ":OK:queue$i size "; |
| 267 |
|
++$i; |
| 268 |
|
} |
| 269 |
< |
push @data, "LINE2:$baserrd\_0:total:total#FF0000:packets/sec - currently"; |
| 183 |
< |
push @rawdata, "GPRINT:total:LAST:%lf %spackets/sec"; |
| 269 |
> |
push @data, "LINE2:$baserrd\_0:total:total#FF0000:OK:packets/sec "; |
| 270 |
|
my($comment); |
| 271 |
|
if(-f "$rrddir/$machine/$baserrd.def") { |
| 272 |
|
open(DEF, "$rrddir/$machine/$baserrd.def"); |
| 274 |
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chomp $comment if defined $comment; |
| 275 |
|
} |
| 276 |
|
$comment = "unknown queue" if not defined $comment; |
| 277 |
< |
&makegraph($machine, $baserrd, $comment, \@data, \@rawdata); |
| 277 |
> |
&makegraph($machine, $baserrd, $comment, "", \@data, \@rawdata); |
| 278 |
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} |
| 279 |
|
} |
| 280 |
|
# have a last check, maybe we can remove the directory now? |
| 286 |
|
closedir DIR; |
| 287 |
|
if($#dirlist == -1) { |
| 288 |
|
rmdir "$rrddir/$machine"; |
| 289 |
+ |
&log("deleting empty rrd directory $rrddir/$machine\n"); |
| 290 |
|
} |
| 291 |
|
} |
| 292 |
|
} |
| 316 |
|
if((time - $mtime) > $maximgage) { |
| 317 |
|
# if so, delete it |
| 318 |
|
unlink("$imgdir/$machine/$img"); |
| 319 |
+ |
&log("deleted old image $imgdir/$machine/$img\n"); |
| 320 |
|
} |
| 321 |
|
} |
| 322 |
|
# have a last check, maybe we can remove the directory now? |
| 326 |
|
closedir DIR; |
| 327 |
|
if($#dirlist == -1) { |
| 328 |
|
rmdir "$imgdir/$machine"; |
| 329 |
+ |
&log("deleted empty image directory $imgdir/$machine\n"); |
| 330 |
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} |
| 331 |
|
} |
| 332 |
|
} |
| 343 |
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# (eg. cpu) |
| 344 |
|
# $title = the title for the graph |
| 345 |
|
# (eg. kernow CPU usage) |
| 346 |
+ |
# $vlabel = the vertical label to apply to the left side of the graph |
| 347 |
+ |
# (eg. kb/s) |
| 348 |
|
# $dataref = a reference to an array containing information for the graph |
| 349 |
< |
# elements of format: "gtype:rrdname:dsname:name#colour:comment with spaces" |
| 349 |
> |
# elements of format: "gtype:rrdname:dsname:name#colour:legend:comment with spaces" |
| 350 |
|
# (if gtype is "NONE" only a DEF of 'name' will be defined, no line will be plotted) |
| 351 |
+ |
# (if legend is "NONE" the latest/average/max/min legend won't be printed) |
| 352 |
|
# $rawcmdref = a reference to an array containing raw rrd commands |
| 353 |
|
# elements a single command each, no spaces |
| 354 |
|
# |
| 355 |
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|
| 356 |
|
sub makegraph() { |
| 357 |
< |
my($machine, $type, $title, $dataref, $rawcmdref) = @_; |
| 357 |
> |
my($machine, $type, $title, $vlabel, $dataref, $rawcmdref) = @_; |
| 358 |
|
# pass in these arrays by reference |
| 359 |
|
my(@data) = @$dataref if defined $dataref; |
| 360 |
|
my(@rawcmd) = @$rawcmdref if defined $rawcmdref; |
| 362 |
|
if(! -d "$imgdir/$machine") { |
| 363 |
|
# not sure on this umask, but it seems to work? |
| 364 |
|
mkdir "$imgdir/$machine", 0777; |
| 365 |
+ |
&log("created directory $imgdir/$machine\n"); |
| 366 |
|
} |
| 367 |
|
my(@rrdcmd); |
| 368 |
|
foreach my $dataitem (@data) { |
| 369 |
< |
# dataitem should be: "gtype:rrdname:dsname:name#colour:comment with spaces" |
| 369 |
> |
# dataitem should be: "gtype:rrdname:dsname:name#colour:legend:comment with spaces" |
| 370 |
|
# (if gtype is "NONE" only a DEF of 'name' will be defined, no line will be plotted) |
| 371 |
< |
if($dataitem =~ /^(\S+):(\S+):(\S+):(\S+)#(.{6}):(.*)$/) { |
| 371 |
> |
# (if legend is "NONE" the latest/average/max/min legend won't be printed) |
| 372 |
> |
if($dataitem =~ /^(\S+):(\S+):(\S+):(\S+)#(.{6}):(\S+):(.*)$/) { |
| 373 |
|
push @rrdcmd, "DEF:$4=$rrddir/$machine/$2.rrd:$3:AVERAGE"; |
| 374 |
|
if($1 ne "NONE") { |
| 375 |
< |
push @rrdcmd, "$1:$4#$5:$6"; |
| 375 |
> |
push @rrdcmd, "$1:$4#$5:$7"; |
| 376 |
> |
if($6 ne "NONE") { |
| 377 |
> |
# add some nice values to the legend |
| 378 |
> |
&addlegend(\@rrdcmd, $4); |
| 379 |
> |
} |
| 380 |
|
} |
| 381 |
|
} |
| 382 |
|
} |
| 383 |
|
push @rrdcmd, "--title=$title"; |
| 384 |
|
push @rrdcmd, "--imgformat=PNG"; |
| 385 |
|
push @rrdcmd, "--lower-limit=0"; |
| 386 |
+ |
push @rrdcmd, "--vertical-label=$vlabel"; |
| 387 |
|
# not entirely convinced this is good... |
| 388 |
|
push @rrdcmd, "--alt-autoscale-max"; |
| 389 |
|
# add any further raw commands |
| 390 |
|
push @rrdcmd, @rawcmd; |
| 391 |
|
RRDs::graph ("$imgdir/$machine/$type-3h.png", "--start=-10800", @rrdcmd); |
| 392 |
|
my($err_3h) = RRDs::error; |
| 393 |
< |
print STDERR "Error generating 3h graph for $machine/$type: $err_3h\n" if $err_3h; |
| 393 |
> |
&log("created $imgdir/$machine/$type-3h.png\n") unless $err_3h; |
| 394 |
> |
&error("Error generating 3h graph for $machine/$type: $err_3h\n") if $err_3h; |
| 395 |
|
RRDs::graph ("$imgdir/$machine/$type-1d.png", "--start=-86400", @rrdcmd); |
| 396 |
|
my($err_1d) = RRDs::error; |
| 397 |
< |
print STDERR "Error generating 1d graph for $machine/$type: $err_1d\n" if $err_1d; |
| 397 |
> |
&log("created $imgdir/$machine/$type-1d.png\n") unless $err_1d; |
| 398 |
> |
&error("Error generating 1d graph for $machine/$type: $err_1d\n") if $err_1d; |
| 399 |
|
RRDs::graph ("$imgdir/$machine/$type-1w.png", "--start=-604800", @rrdcmd); |
| 400 |
|
my($err_1w) = RRDs::error; |
| 401 |
< |
print STDERR "Error generating 1w graph for $machine/$type: $err_1w\n" if $err_1w; |
| 401 |
> |
&log("created $imgdir/$machine/$type-1w.png\n") unless $err_1w; |
| 402 |
> |
&error("Error generating 1w graph for $machine/$type: $err_1w\n") if $err_1w; |
| 403 |
|
RRDs::graph ("$imgdir/$machine/$type-1m.png", "--start=-2678400", @rrdcmd); |
| 404 |
|
my($err_1m) = RRDs::error; |
| 405 |
< |
print STDERR "Error generating 1m graph for $machine/$type: $err_1m\n" if $err_1m; |
| 405 |
> |
&log("created $imgdir/$machine/$type-1m.png\n") unless $err_1m; |
| 406 |
> |
&error("Error generating 1m graph for $machine/$type: $err_1m\n") if $err_1m; |
| 407 |
|
RRDs::graph ("$imgdir/$machine/$type-1y.png", "--start=-31536000", @rrdcmd); |
| 408 |
|
my($err_1y) = RRDs::error; |
| 409 |
< |
print STDERR "Error generating 1y graph for $machine/$type: $err_1y\n" if $err_1y; |
| 409 |
> |
&log("created $imgdir/$machine/$type-1y.png\n") unless $err_1y; |
| 410 |
> |
&error("Error generating 1y graph for $machine/$type: $err_1y\n") if $err_1y; |
| 411 |
|
return; |
| 412 |
|
} |
| 413 |
|
|
| 414 |
+ |
# subroutine to add a legend |
| 415 |
+ |
# accepts reference to an array and a name |
| 416 |
+ |
sub addlegend() { |
| 417 |
+ |
my($dataref, $name) = @_; |
| 418 |
+ |
push @$dataref, "GPRINT:$name:LAST:Current\\: \%8.2lf %s"; |
| 419 |
+ |
push @$dataref, "GPRINT:$name:AVERAGE:Average\\: \%8.2lf %s"; |
| 420 |
+ |
push @$dataref, "GPRINT:$name:MAX:Max\\: \%8.2lf %s\\n"; |
| 421 |
+ |
} |
| 422 |
+ |
|
| 423 |
|
# hacky subroutine to return a colour |
| 424 |
|
# could be done much better somehow :/ |
| 425 |
|
sub get_colour { |
| 442 |
|
else { |
| 443 |
|
return "#000066"; |
| 444 |
|
} |
| 445 |
+ |
} |
| 446 |
+ |
|
| 447 |
+ |
# prints out usage information then exits |
| 448 |
+ |
sub usage() { |
| 449 |
+ |
print "Usage: graph.pl [options]\n"; |
| 450 |
+ |
print "Options\n"; |
| 451 |
+ |
print " -c config Specifies the configuration file\n"; |
| 452 |
+ |
print " default: rrdgraphing.conf\n"; |
| 453 |
+ |
print " -v Be verbose about what's happening\n"; |
| 454 |
+ |
print " -q Be quiet, even supress errors\n"; |
| 455 |
+ |
print " -V Print version number\n"; |
| 456 |
+ |
print " -h Prints this help page\n"; |
| 457 |
+ |
exit(1); |
| 458 |
+ |
} |
| 459 |
+ |
|
| 460 |
+ |
# prints a log message if verbose is turned on |
| 461 |
+ |
sub log() { |
| 462 |
+ |
my($msg) = @_; |
| 463 |
+ |
print $msg if $verbose; |
| 464 |
+ |
} |
| 465 |
+ |
|
| 466 |
+ |
# prints an error message unless quiet is turned on |
| 467 |
+ |
sub error() { |
| 468 |
+ |
my($msg) = @_; |
| 469 |
+ |
print STDERR $msg unless $quiet; |
| 470 |
|
} |
