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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$'; |
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$| = 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($hex_underscore) = "_5f"; |
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|
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# check for command line arguments |
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my(%opts); |
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my($ret) = getopts('hvqVc:', \%opts); |
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# if invalid argument given, $ret will not be 1 |
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&usage() if $ret != 1; |
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# first process the arguments which might mean we exit now |
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|
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# -h is usage |
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if($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: $version\n"; |
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exit(1); |
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} |
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|
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# Then try getting the config |
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# -c specifies the config file location |
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if($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 $configfile; |
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# Then any options we might want to override the config with |
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# -v is verbose |
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if($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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# 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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# 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) > $maxrrdage) { |
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# do we delete the rrd, or just ignore it? |
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if($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$/) { |
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my(@data); |
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my(@rawdata); |
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&makegraph($machine, $baserrd, $comment, \@data, \@rawdata); |
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} |
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} |
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# have a last check, maybe we can remove the directory now? |
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# (only if we're deleting stuff) |
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if($deleterrds) { |
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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($#dirlist == -1) { |
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rmdir "$rrddir/$machine"; |
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&log("deleting empty rrd directory $rrddir/$machine\n"); |
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} |
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} |
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} |
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if($deleteimgs) { |
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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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# 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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# 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) > $maximgage) { |
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# if so, delete it |
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unlink("$imgdir/$machine/$img"); |
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&log("deleted old image $imgdir/$machine/$img\n"); |
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} |
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} |
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# have a last check, maybe we can remove the directory now? |
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# Read the contents of the directory |
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opendir(DIR, "$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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rmdir "$imgdir/$machine"; |
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&log("deleted empty image directory $imgdir/$machine\n"); |
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} |
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} |
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} |
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exit(0); |
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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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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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&log("created directory $imgdir/$machine\n"); |
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} |
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my(@rrdcmd); |
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foreach my $dataitem (@data) { |
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push @rrdcmd, @rawcmd; |
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RRDs::graph ("$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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&log("created $imgdir/$machine/$type-3h.png\n") unless $err_3h; |
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&error("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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&log("created $imgdir/$machine/$type-1d.png\n") unless $err_1d; |
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&error("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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&log("created $imgdir/$machine/$type-1w.png\n") unless $err_1w; |
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&error("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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&log("created $imgdir/$machine/$type-1m.png\n") unless $err_1m; |
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&error("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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&log("created $imgdir/$machine/$type-1y.png\n") unless $err_1y; |
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&error("Error generating 1y graph for $machine/$type: $err_1y\n") if $err_1y; |
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return; |
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} |
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else { |
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return "#000066"; |
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} |
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} |
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# prints out usage information then exits |
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sub usage() { |
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print "Usage: graph.pl [options]\n"; |
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print "Options\n"; |
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print " -c config Specifies the configuration file\n"; |
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print " default: rrdgraphing.conf\n"; |
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print " -v Be verbose about what's happening\n"; |
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print " -q Be quiet, even supress errors\n"; |
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print " -V Print version number\n"; |
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print " -h Prints this help page\n"; |
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exit(1); |
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} |
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# prints a log message if verbose is turned on |
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sub log() { |
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my($msg) = @_; |
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print $msg if $verbose; |
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} |
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# prints an error message unless quiet is turned on |
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sub error() { |
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my($msg) = @_; |
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print STDERR $msg unless $quiet; |
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} |
