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#!/usr/bin/perl -w |
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|
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# |
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# i-scream central monitoring system |
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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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# modify it under the terms of the GNU General Public License |
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# as published by the Free Software Foundation; either version 2 |
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# of the License, or (at your option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program; if not, write to the Free Software |
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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# |
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|
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# ----------------------------------------------------------- |
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# i-scream graph generation script |
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# http://www.i-scream.org.uk |
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# |
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# Generates graphs from rrd databases for i-scream data. |
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# |
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# $Author: tdb $ |
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# $Id: graph.pl,v 1.2 2002/05/18 18:15:59 tdb Exp $ |
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#------------------------------------------------------------ |
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|
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## TODO |
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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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|
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$| = 1; |
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use strict; |
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use RRDs; |
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|
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# Base directory for images |
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# (a directory will be constructed for each host under this) |
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my($imgdir) = "/home/pkg/iscream/public_html/graphs"; |
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|
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# Location of RRD databases |
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my($rrddir) = "/u1/i-scream/databases"; |
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|
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# / converted to a decimal then hex'd |
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my($hex_slash) = "_2f"; |
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# _ converted to a decimal then hex'd |
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my($hex_underscore) = "_5f"; |
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|
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# maximum age (last modified) before an rrd or graph get cleaned up |
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# (in seconds) |
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my($maxrrdage) = 3600; # 1 hour |
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my($maxgraphage) = 3600; # 1 hour |
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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, $rrddir); |
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my(@rrddirlist) = grep { -d "$rrddir/$_" && !/^\.$/ && !/^\.\.$/ } readdir(DIR); |
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closedir DIR; |
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|
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# look through each directoty, as they might |
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# contain rrds for a particular machine |
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foreach my $machine (@rrddirlist) { |
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# Read the contents of the directory |
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opendir(DIR, "$rrddir/$machine"); |
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my(@rrdlist) = grep { /\.rrd$/ && -f "$rrddir/$machine/$_" } readdir(DIR); |
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closedir DIR; |
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|
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# See what rrd we have, and generate the graphs accordingly |
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foreach my $rrd (@rrdlist) { |
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chomp $rrd; |
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# stat the file |
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my($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime, |
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$ctime,$blksize,$blocks) = stat("$rrddir/$machine/$rrd"); |
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# check if it's old enough to be deleted |
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if((time - $mtime) > $maxrrdage) { |
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print "pruning rrd $rrddir/$machine/$rrd\n"; |
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# if so, delete it |
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unlink("$rrddir/$machine/$rrd"); |
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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:$1:iowait:iowait#FF0000:iowait cpu"; |
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push @rawdata, "--upper-limit=100"; |
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&makegraph($machine, $1, "CPU Usage for $machine", \@data, \@rawdata); |
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} |
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if($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:$1:total:total#0000FF:total memory"; |
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# calculate inuse |
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push @rawdata, "CDEF:inuse=total,free,-"; |
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# and add it to the graph |
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push @rawdata, "AREA:inuse#CCCCFF:memory in use"; |
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push @rawdata, "--base=1024"; |
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&makegraph($machine, $1, "Memory Usage for $machine", \@data, \@rawdata); |
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} |
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if($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 $machine", \@data); |
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} |
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if($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 $machine", \@data); |
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} |
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if($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:$1:total:total#0000FF:total swap"; |
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# calculate inuse |
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push @rawdata, "CDEF:inuse=total,free,-"; |
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# and add it to the graph |
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push @rawdata, "AREA:inuse#CCCCFF:swap in use"; |
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push @rawdata, "--base=1024"; |
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&makegraph($machine, $1, "Swap Usage for $machine", \@data, \@rawdata); |
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} |
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if($rrd =~ /^(users)\.rrd$/) { |
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my(@data); |
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push @data, "AREA:$1:count:count#CCCCFF:user count"; |
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&makegraph($machine, $1, "User Count for $machine", \@data); |
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} |
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if($rrd =~ /^(disk)-(\S+).rrd$/) { |
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my(@data); |
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my(@rawdata); |
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push @data, "LINE2:$1-$2:kbytes:kbytes#0000FF:total size"; |
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push @data, "AREA:$1-$2:used:used#CCCCFF:used"; |
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push @rawdata, "--base=1024"; |
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my($type) = $1; |
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my($name) = $2; |
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my($nicename) = $2; |
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$nicename =~ s/$hex_slash/\//g; |
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$nicename =~ s/$hex_underscore/_/g; |
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&makegraph($machine, "$type-$name", "Disk Usage for $machine on $nicename", \@data, \@rawdata); |
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} |
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# probably a queue with a name like this :) |
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if($rrd =~ /^(\d+)_0\.rrd$/) { |
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my(@data); |
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my(@rawdata); |
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my($baserrd) = $1; |
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my($i) = 0; |
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while( -f "$rrddir/$machine/$baserrd\_$i.rrd" ) { |
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push @data, "LINE2:$baserrd\_$i:size:size$i" . &get_colour($i) . ":queue$i size "; |
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++$i; |
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} |
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push @data, "LINE2:$baserrd\_0:total:total#FF0000:packets/sec - currently"; |
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push @rawdata, "GPRINT:total:LAST:%lf %spackets/sec"; |
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my($comment); |
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if(-f "$rrddir/$machine/$baserrd.def") { |
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open(DEF, "$rrddir/$machine/$baserrd.def"); |
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$comment = <DEF>; |
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chomp $comment if defined $comment; |
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} |
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$comment = "unknown queue" if not defined $comment; |
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&makegraph($machine, $baserrd, $comment, \@data, \@rawdata); |
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} |
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} |
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# have a last check, maybe we can remove the directory now? |
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# Read the contents of the directory |
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opendir(DIR, "$rrddir/$machine"); |
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my(@dirlist) = grep { !/^\.$/ && !/^\.\.$/ } readdir(DIR); |
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closedir DIR; |
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if($#dirlist == -1) { |
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print "pruning rrddir $rrddir/$machine\n"; |
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rmdir "$rrddir/$machine"; |
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} |
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} |
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|
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# Read the contents of the graphs directory |
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# and pull out the list of subdirectories (except . and .. :) |
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opendir(DIR, $imgdir); |
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my(@imgdirlist) = grep { -d "$imgdir/$_" && !/^\.$/ && !/^\.\.$/ } readdir(DIR); |
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closedir DIR; |
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|
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# look through each directoty, as they might |
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# contain images for a particular machine |
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foreach my $machine (@imgdirlist) { |
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# Read the contents of the directory |
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opendir(DIR, "$imgdir/$machine"); |
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my(@imglist) = grep { /\.png$/ && -f "$imgdir/$machine/$_" } readdir(DIR); |
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closedir DIR; |
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|
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# See what rrd we have, and generate the graphs accordingly |
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foreach my $img (@imglist) { |
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chomp $img; |
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# stat the img |
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my($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime, |
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$ctime,$blksize,$blocks) = stat("$imgdir/$machine/$img"); |
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# check if it's old enough to be deleted |
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if((time - $mtime) > $maxgraphage) { |
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print "pruning img $imgdir/$machine/$img\n"; |
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# if so, delete it |
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unlink("$imgdir/$machine/$img"); |
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} |
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} |
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# have a last check, maybe we can remove the directory now? |
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# Read the contents of the directory |
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opendir(DIR, "$imgdir/$machine"); |
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my(@dirlist) = grep { !/^\.$/ && !/^\.\.$/ } readdir(DIR); |
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closedir DIR; |
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if($#dirlist == -1) { |
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print "pruning img dir $imgdir/$machine\n"; |
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rmdir "$imgdir/$machine"; |
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} |
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} |
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|
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# |
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# subroutine to make some graphs |
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# |
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# $machine = name of the machine |
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# (eg. kernow.ukc.ac.uk) |
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# $type = the type of graph for the machine |
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# (eg. cpu) |
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# $title = the title for the graph |
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# (eg. kernow CPU usage) |
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# $dataref = a reference to an array containing information for the graph |
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# elements of format: "gtype:rrdname:dsname:name#colour:comment with spaces" |
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# (if gtype is "NONE" only a DEF of 'name' will be defined, no line will be plotted) |
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# $rawcmdref = a reference to an array containing raw rrd commands |
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# elements a single command each, no spaces |
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# |
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|
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sub makegraph() { |
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my($machine, $type, $title, $dataref, $rawcmdref) = @_; |
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# pass in these arrays by reference |
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my(@data) = @$dataref if defined $dataref; |
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my(@rawcmd) = @$rawcmdref if defined $rawcmdref; |
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# check if directory exists for images |
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if(! -d "$imgdir/$machine") { |
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# not sure on this umask, but it seems to work? |
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mkdir "$imgdir/$machine", 0777; |
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} |
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my(@rrdcmd); |
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foreach my $dataitem (@data) { |
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# dataitem should be: "gtype:rrdname:dsname:name#colour:comment with spaces" |
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# (if gtype is "NONE" only a DEF of 'name' will be defined, no line will be plotted) |
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if($dataitem =~ /^(\S+):(\S+):(\S+):(\S+)#(.{6}):(.*)$/) { |
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push @rrdcmd, "DEF:$4=$rrddir/$machine/$2.rrd:$3:AVERAGE"; |
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if($1 ne "NONE") { |
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push @rrdcmd, "$1:$4#$5:$6"; |
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} |
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} |
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} |
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push @rrdcmd, "--title=$title"; |
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push @rrdcmd, "--imgformat=PNG"; |
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push @rrdcmd, "--lower-limit=0"; |
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# not entirely convinced this is good... |
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push @rrdcmd, "--alt-autoscale-max"; |
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# add any further raw commands |
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push @rrdcmd, @rawcmd; |
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RRDs::graph ("$imgdir/$machine/$type-3h.png", "--start=-10800", @rrdcmd); |
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my($err_3h) = RRDs::error; |
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print STDERR "Error generating 3h graph for $machine/$type: $err_3h\n" if $err_3h; |
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RRDs::graph ("$imgdir/$machine/$type-1d.png", "--start=-86400", @rrdcmd); |
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my($err_1d) = RRDs::error; |
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print STDERR "Error generating 1d graph for $machine/$type: $err_1d\n" if $err_1d; |
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RRDs::graph ("$imgdir/$machine/$type-1w.png", "--start=-604800", @rrdcmd); |
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my($err_1w) = RRDs::error; |
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print STDERR "Error generating 1w graph for $machine/$type: $err_1w\n" if $err_1w; |
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RRDs::graph ("$imgdir/$machine/$type-1m.png", "--start=-2678400", @rrdcmd); |
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my($err_1m) = RRDs::error; |
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print STDERR "Error generating 1m graph for $machine/$type: $err_1m\n" if $err_1m; |
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RRDs::graph ("$imgdir/$machine/$type-1y.png", "--start=-31536000", @rrdcmd); |
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my($err_1y) = RRDs::error; |
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print STDERR "Error generating 1y graph for $machine/$type: $err_1y\n" if $err_1y; |
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return; |
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} |
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|
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# hacky subroutine to return a colour |
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# could be done much better somehow :/ |
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sub get_colour { |
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my($col) = @_; |
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if($col == 0) { |
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return "#0000FF"; |
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} |
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elsif($col == 1) { |
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return "#00FF00"; |
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} |
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elsif($col == 2) { |
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return "#FF00FF"; |
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} |
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elsif($col == 3) { |
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return "#FFFF00"; |
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} |
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elsif($col == 4) { |
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return "#00FFFF"; |
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} |
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else { |
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return "#000066"; |
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} |
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} |
