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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
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software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Lesser General Public License instead.) You can apply it to
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When we speak of free software, we are referring to freedom, not
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GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
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This section is intended to make thoroughly clear what is believed to
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certain countries either by patents or by copyrighted interfaces, the
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may add an explicit geographical distribution limitation excluding
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END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
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the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
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This program is distributed in the hope that it will be useful,
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
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Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
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mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License.

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= Statgraph =
== Introduction ==
Statgraph is a simple tool for graphing usage statistic from a number of
unix hosts.
Statgraph makes use of the statgrab tool from
http://www.i-scream.org/libstatgrab/ and has been tested on Linux,
Solaris and FreeBSD. In theory, any platform supported by libstatgrab
should work.
== Usage ==
To make use of statgraph, you'll need perl and RRDtool, along with the
perl bindings for RRDtool. On debian, these are included in the
'librrds-perl' package.
To collect statistics from a host, it will need the statgrab tool
installed from libstatgrab. On a debian/ubuntu system, you can simply
'apt-get install statgrab'.
You'll need to decide how to collect statistics - either via a direct
TCP connection to the target host, or by executing a command of your
choice. This does mean you can make use of ssh with an ssh key if you
want to keep open ports to a minimum.
=== Direct TCP ===
If you're collecting via TCP, the easiest way to set things up is to run
statgrab from inetd.
In /etc/services, add:
statgrab 27001/tcp
and in /etc/inetd.conf:
statgrab stream tcp nowait root /usr/sbin/tcpd /usr/bin/statgrab
You don't have to run it as root, but there are some statistics that it
doesn't collect as an unprivileged user. The risk is relatively low as
statgrab doesn't accept any input, and will simply print the statistics
and exit, but there is always a risk with exposing a service. As always,
you should seriously consider firewalling access to this port to trusted
hosts only.
=== Running a command ===
This has a bit more overhead, but does mean minimal changes to the
server you're connecting to. Any command that generates statgrab output
is fine. The simplest option is something like:
ssh -i ssh_key user@hostname /usr/bin/statgrab
=== Configuration File ===
The configuration for statgraph is statgraph.conf - this should be
fairly self-explanatory, and a few examples are provided in
statgraph.conf.example
== Running ==
To check it's all working, run ./statgraph.pl manually. If that looks
good, add to cron and run once per minute. It will email you if a
connection to a host fails though, so you might want to redirect output
to a log file. I don't, since it's useful to know if a host is broken :)
To generate graphs, run the ./mkgraph.pl script. I run this every 10
minutes from cron, and it generates static html and .png images in
whatever you've configured the graphs to live. By default this is the
'graphs' directory inside the statgraph directory.
This directory can be shared by a webserver and contains no dynamic code
whatsoever.
== Known Issues ==
* Statgraph is insanely spammy if a host is down, unless you redirect
output
* Mounts with : in the name (remote NFS mounts for example) don't show
up correctly.
* There's no sanity checking for return values, since they could
massively vary. When I wrote statgraph the idea of 128 core machines
was unimaginable, but we're there now, so I'm reluctant to hard code
any values in. Occasionally a wonky value will make the graph scale a
bit silly. There's a tool called 'rrdtrim' that can fix these. On an
installation monitoring about 40 hosts, I probably have to fix 2 a
year.
* Running it from cron can be a bit braindead sometime, and the
timeouts could be more effective - occasionally processes do get
wedged if the child does, but it's rare.
== License ==
Statgraph is released under the GPLv2 license. See the COPYING file for
details.

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use RRDs;
use strict;
# Takes array ref of statgrab output.
# Returns hash structure
sub sgparse ($) {
my $text = shift;
my %tree;
foreach (@$text) {
chomp;
m/^([^=]*) = (.*)$/ or die "bad line in statgrab output";
my @parts = split /\./, $1;
if ($#parts == 2) {
$tree{$parts[0]}{$parts[1]}{$parts[2]} = $2;
} else {
$tree{$parts[0]}{$parts[1]} = $2;
}
}
return %tree;
}
sub confparse ($) {
my $text = shift;
my %tree;
foreach (@$text) {
chomp;
next if (m/^#/);
next if (m/^$/);
m/^([^=]*) = (.*)$/ or die "bad line in config $_";
my @parts = split /\./, $1;
if ($#parts == 2) {
$tree{$parts[0]}{$parts[1]}{$parts[2]} = $2;
} else {
$tree{$parts[0]}{$parts[1]} = $2;
}
}
return %tree;
}
## Connect to remote host and retrieve statgrab results
sub get_net_results ($$$) {
use IO::Socket;
my ($remote_host, $remote_port, $cache) = @_;
my ($line, $response, $socket, $flag, @res);
$socket = IO::Socket::INET->new(PeerAddr => $remote_host,
PeerPort => $remote_port,
Proto => "tcp",
Type => SOCK_STREAM)
or die "Couldn't connect to $remote_host:$remote_port\n";
#while($line = <$socket>){
# push @res, $line;
#}
@res = (<$socket>);
my $results = join('', @res);
if ($results ne "") {
open CACHE, ">$cache";
print CACHE $results;
close CACHE;
} else {
die "No result from $remote_host";
}
return sgparse(\@res);
}
## Run command on local host to retrieve statgrab results
## Can be used to get local stats, or call ssh, or similar...
sub get_exec_results ($$) {
my $command = shift;
my $cache = shift;
open STATGRAB, "$command|" or warn "$command failed: $!";
my @res = (<STATGRAB>);
my $results = join('', @res);
if ($results ne "") {
open CACHE, ">$cache";
print CACHE $results;
close CACHE;
} else {
die "No result from $command";
}
return sgparse(\@res);
}
## Create RRDs where relevant
sub create_rrd ($$$$) {
my $rrdlocation = shift;
my $type = shift;
my $host = shift;
my $devname = shift;
use RRDs;
print " Creating RRD: $host $type $devname\n";
if ($type eq 'cpu') {
RRDs::create ("$rrdlocation$host.cpu.rrd",
"--step", "60",
"DS:idle:COUNTER:120:U:U",
"DS:iowait:COUNTER:120:U:U",
"DS:kernel:COUNTER:120:U:U",
"DS:nice:COUNTER:120:U:U",
"DS:swap:COUNTER:120:U:U",
"DS:total:COUNTER:120:U:U",
"DS:user:COUNTER:120:U:U",
"RRA:AVERAGE:0.5:1:2160", # 1.5 days
"RRA:AVERAGE:0.5:15:1008", # 1.5 weeks
"RRA:AVERAGE:0.5:60:1008", # 6 weeks
"RRA:AVERAGE:0.5:720:1460", # 2 years
"RRA:MAX:0.5:1:2160", # 1.5 days
"RRA:MAX:0.5:15:1008", # 1.5 weeks
"RRA:MAX:0.5:60:1008", # 6 weeks
"RRA:MAX:0.5:720:1460"); # 2 years
} elsif ($type eq 'load') {
RRDs::create ("$rrdlocation$host.load.rrd",
"--step", "60",
"DS:min1:GAUGE:120:U:U",
"DS:min5:GAUGE:120:U:U",
"DS:min15:GAUGE:120:U:U",
"RRA:AVERAGE:0.5:1:2160", # 1.5 days
"RRA:AVERAGE:0.5:15:1008", # 1.5 weeks
"RRA:AVERAGE:0.5:60:1008", # 6 weeks
"RRA:AVERAGE:0.5:720:1460", # 2 years
"RRA:MAX:0.5:1:2160", # 1.5 days
"RRA:MAX:0.5:15:1008", # 1.5 weeks
"RRA:MAX:0.5:60:1008", # 6 weeks
"RRA:MAX:0.5:720:1460"); # 2 years
} elsif ($type eq 'mem') {
RRDs::create ("$rrdlocation$host.mem.rrd",
"--step", "60",
"DS:cache:GAUGE:120:U:U",
"DS:free:GAUGE:120:U:U",
"DS:total:GAUGE:120:U:U",
"DS:used:GAUGE:120:U:U",
"RRA:AVERAGE:0.5:1:2160", # 1.5 days
"RRA:AVERAGE:0.5:15:1008", # 1.5 weeks
"RRA:AVERAGE:0.5:60:1008", # 6 weeks
"RRA:AVERAGE:0.5:720:1460", # 2 years
"RRA:MAX:0.5:1:2160", # 1.5 days
"RRA:MAX:0.5:15:1008", # 1.5 weeks
"RRA:MAX:0.5:60:1008", # 6 weeks
"RRA:MAX:0.5:720:1460"); # 2 years
} elsif ($type eq 'page') {
RRDs::create ("$rrdlocation$host.page.rrd",
"--step", "60",
"DS:in:COUNTER:120:U:U",
"DS:out:COUNTER:120:U:U",
"RRA:AVERAGE:0.5:1:2160", # 1.5 days
"RRA:AVERAGE:0.5:15:1008", # 1.5 weeks
"RRA:AVERAGE:0.5:60:1008", # 6 weeks
"RRA:AVERAGE:0.5:720:1460", # 2 years
"RRA:MAX:0.5:1:2160", # 1.5 days
"RRA:MAX:0.5:15:1008", # 1.5 weeks
"RRA:MAX:0.5:60:1008", # 6 weeks
"RRA:MAX:0.5:720:1460"); # 2 years
} elsif ($type eq 'proc') {
RRDs::create ("$rrdlocation$host.proc.rrd",
"--step", "60",
"DS:running:GAUGE:120:U:U",
"DS:sleeping:GAUGE:120:U:U",
"DS:stopped:GAUGE:120:U:U",
"DS:total:GAUGE:120:U:U",
"DS:zombie:GAUGE:120:U:U",
"RRA:AVERAGE:0.5:1:2160", # 1.5 days
"RRA:AVERAGE:0.5:15:1008", # 1.5 weeks
"RRA:AVERAGE:0.5:60:1008", # 6 weeks
"RRA:AVERAGE:0.5:720:1460", # 2 years
"RRA:MAX:0.5:1:2160", # 1.5 days
"RRA:MAX:0.5:15:1008", # 1.5 weeks
"RRA:MAX:0.5:60:1008", # 6 weeks
"RRA:MAX:0.5:720:1460"); # 2 years
} elsif ($type eq 'user') {
RRDs::create ("$rrdlocation$host.user.rrd",
"--step", "60",
"DS:num:GAUGE:120:U:U",
"RRA:AVERAGE:0.5:1:2160", # 1.5 days
"RRA:AVERAGE:0.5:15:1008", # 1.5 weeks
"RRA:AVERAGE:0.5:60:1008", # 6 weeks
"RRA:AVERAGE:0.5:720:1460", # 2 years
"RRA:MAX:0.5:1:2160", # 1.5 days
"RRA:MAX:0.5:15:1008", # 1.5 weeks
"RRA:MAX:0.5:60:1008", # 6 weeks
"RRA:MAX:0.5:720:1460"); # 2 years
} elsif ($type eq 'swap') {
RRDs::create ("$rrdlocation$host.swap.rrd",
"--step", "60",
"DS:free:GAUGE:120:U:U",
"DS:total:GAUGE:120:U:U",
"DS:used:GAUGE:120:U:U",
"RRA:AVERAGE:0.5:1:2160", # 1.5 days
"RRA:AVERAGE:0.5:15:1008", # 1.5 weeks
"RRA:AVERAGE:0.5:60:1008", # 6 weeks
"RRA:AVERAGE:0.5:720:1460", # 2 years
"RRA:MAX:0.5:1:2160", # 1.5 days
"RRA:MAX:0.5:15:1008", # 1.5 weeks
"RRA:MAX:0.5:60:1008", # 6 weeks
"RRA:MAX:0.5:720:1460"); # 2 years
} elsif ($type eq 'disk') {
RRDs::create ("$rrdlocation$host.disk.$devname.rrd",
"--step", "60",
"DS:read_bytes:COUNTER:120:U:U",
"DS:write_bytes:COUNTER:120:U:U",
"RRA:AVERAGE:0.5:1:2160", # 1.5 days
"RRA:AVERAGE:0.5:15:1008", # 1.5 weeks
"RRA:AVERAGE:0.5:60:1008", # 6 weeks
"RRA:AVERAGE:0.5:720:1460", # 2 years
"RRA:MAX:0.5:1:2160", # 1.5 days
"RRA:MAX:0.5:15:1008", # 1.5 weeks
"RRA:MAX:0.5:60:1008", # 6 weeks
"RRA:MAX:0.5:720:1460"); # 2 years
} elsif ($type eq 'net') {
RRDs::create ("$rrdlocation$host.net.$devname.rrd",
"--step", "60",
"DS:rx:COUNTER:120:U:U",
"DS:tx:COUNTER:120:U:U",
"DS:ipackets:COUNTER:120:U:U",
"DS:opackets:COUNTER:120:U:U",
"DS:ierrors:COUNTER:120:U:U",
"DS:oerrors:COUNTER:120:U:U",
"RRA:AVERAGE:0.5:1:2160", # 1.5 days
"RRA:AVERAGE:0.5:15:1008", # 1.5 weeks
"RRA:AVERAGE:0.5:60:1008", # 6 weeks
"RRA:AVERAGE:0.5:720:1460", # 2 years
"RRA:MAX:0.5:1:2160", # 1.5 days
"RRA:MAX:0.5:15:1008", # 1.5 weeks
"RRA:MAX:0.5:60:1008", # 6 weeks
"RRA:MAX:0.5:720:1460"); # 2 years
} elsif ($type eq 'fs') {
RRDs::create ("$rrdlocation$host.fs.$devname.rrd",
"--step", "60",
"DS:used:GAUGE:120:U:U",
"DS:size:GAUGE:120:U:U",
"DS:used_inodes:GAUGE:120:U:U",
"DS:total_inodes:GAUGE:120:U:U",
"RRA:AVERAGE:0.5:1:2160", # 1.5 days
"RRA:AVERAGE:0.5:15:1008", # 1.5 weeks
"RRA:AVERAGE:0.5:60:1008", # 6 weeks
"RRA:AVERAGE:0.5:720:1460", # 2 years
"RRA:MAX:0.5:1:2160", # 1.5 days
"RRA:MAX:0.5:15:1008", # 1.5 weeks
"RRA:MAX:0.5:60:1008", # 6 weeks
"RRA:MAX:0.5:720:1460"); # 2 years
}
}
sub update_rrd ($$) {
my $rrd = shift;
my $data = shift;
#print "$rrd, $data\n";
RRDs::update($rrd, $data);
my $ERR=RRDs::error;
print "ERROR while updating $rrd: $ERR\n" if $ERR;
}
sub create_graph ($$$$$$$$) {
my $rrdlocation = shift;
my $location = shift;
my $type = shift;
my $host = shift;
my $devname = shift;
my $offsets = shift;
my $friendly = shift;
my $colours = shift;
my %colours = %$colours;
# Check colours
$colours{stack1} = '#FF0000' unless $colours{stack1};
$colours{stack2} = '#FFFF00' unless $colours{stack2};
$colours{stack3} = '#00FFFF' unless $colours{stack3};
$colours{stack4} = '#00FF00' unless $colours{stack4};
$colours{stack5} = '#0000FF' unless $colours{stack5};
$colours{load1} = '#CECFFF' unless $colours{load1};
$colours{load5} = '#7375FF' unless $colours{load5};
$colours{load15} = '#0000FF' unless $colours{load15};
$colours{area} = '#CECFFF' unless $colours{area};
$colours{line} = '#0000FF' unless $colours{line};
$colours{in} = '#00FF00' unless $colours{in};
$colours{out} = '#0000FF' unless $colours{out};
foreach my $offset (@$offsets) {
if ($type eq 'cpu') {
create_graph_cpu($rrdlocation, $location, $host, $offset, \%colours);
} elsif ($type eq 'load') {
create_graph_load($rrdlocation, $location, $host, $offset, \%colours);
} elsif ($type eq 'mem') {
create_graph_mem($rrdlocation, $location, $host, $offset, \%colours);
} elsif ($type eq 'page') {
create_graph_page($rrdlocation, $location, $host, $offset, \%colours);
} elsif ($type eq 'proc') {
create_graph_proc($rrdlocation, $location, $host, $offset, \%colours);
} elsif ($type eq 'user') {
create_graph_user($rrdlocation, $location, $host, $offset, \%colours);
} elsif ($type eq 'swap') {
create_graph_swap($rrdlocation, $location, $host, $offset, \%colours);
} elsif ($type eq 'disk') {
create_graph_disk($rrdlocation, $location, $host, $devname, $offset, \%colours);
} elsif ($type eq 'net') {
create_graph_net($rrdlocation, $location, $host, $devname, $offset, \%colours);
} elsif ($type eq 'fs') {
create_graph_fs($rrdlocation, $location, $host, $devname, $offset, $friendly, \%colours);
}
}
}
sub create_graph_cpu ($$$$$) {
my $rrdlocation = shift;
my $location = shift;
my $host = shift;
my $offset = shift;
my $colours = shift;
my %colours = %{$colours};
my $type = "cpu";
RRDs::graph ("$location$host.$type.$offset.png",
"--start", "-$offset",
"-l", "0",
"-a", "PNG",
"-t", "CPU usage for $host",
"--vertical-label", "% cpu used",
"DEF:idle=$rrdlocation$host.$type.rrd:idle:AVERAGE",
"DEF:iowait=$rrdlocation$host.$type.rrd:iowait:AVERAGE",
"DEF:kernel=$rrdlocation$host.$type.rrd:kernel:AVERAGE",
"DEF:nice=$rrdlocation$host.$type.rrd:nice:AVERAGE",
"DEF:swap=$rrdlocation$host.$type.rrd:swap:AVERAGE",
"DEF:user=$rrdlocation$host.$type.rrd:user:AVERAGE",
"AREA:kernel$colours{stack1}:kernel cpu",
"GPRINT:kernel:LAST:Current\\: \%8.2lf %s",
"GPRINT:kernel:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:kernel:MAX:Max\\: \%8.2lf %s\\n",
"STACK:swap$colours{stack2}:swap cpu ",
"GPRINT:swap:LAST:Current\\: \%8.2lf %s",
"GPRINT:swap:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:swap:MAX:Max\\: \%8.2lf %s\\n",
"STACK:iowait$colours{stack3}:iowait cpu",
"GPRINT:iowait:LAST:Current\\: \%8.2lf %s",
"GPRINT:iowait:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:iowait:MAX:Max\\: \%8.2lf %s\\n",
"STACK:nice$colours{stack4}:nice cpu ",
"GPRINT:nice:LAST:Current\\: \%8.2lf %s",
"GPRINT:nice:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:nice:MAX:Max\\: \%8.2lf %s\\n",
"STACK:user$colours{stack5}:user cpu ",
"GPRINT:user:LAST:Current\\: \%8.2lf %s",
"GPRINT:user:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:user:MAX:Max\\: \%8.2lf %s\\n");
my $ERR=RRDs::error;
die "ERROR : $ERR\n" if $ERR;
}
sub create_graph_load ($$$$$) {
my $rrdlocation = shift;
my $location = shift;
my $host = shift;
my $offset = shift;
my $colours = shift;
my %colours = %{$colours};
my $type = "load";
RRDs::graph ("$location$host.$type.$offset.png",
"--start", "-$offset",
"-l", "0",
"-u", "1",
"-a", "PNG",
"-t", "load averages for $host",
"--units-exponent", "1",
"--vertical-label", "processes in run queue",
"DEF:load1=$rrdlocation$host.$type.rrd:min1:AVERAGE",
"DEF:load5=$rrdlocation$host.$type.rrd:min5:AVERAGE",
"DEF:load15=$rrdlocation$host.$type.rrd:min15:AVERAGE",
"LINE2:load1$colours{load1}:1 minute load ",
"GPRINT:load1:LAST:Current\\: \%8.2lf %s",
"GPRINT:load1:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:load1:MAX:Max\\: \%8.2lf %s\\n",
"LINE2:load5$colours{load5}:5 minute load ",
"GPRINT:load5:LAST:Current\\: \%8.2lf %s",
"GPRINT:load5:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:load5:MAX:Max\\: \%8.2lf %s\\n",
"LINE2:load15$colours{load15}:15 minute load",
"GPRINT:load15:LAST:Current\\: \%8.2lf %s",
"GPRINT:load15:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:load15:MAX:Max\\: \%8.2lf %s\\n");
my $ERR=RRDs::error;
die "ERROR : $ERR\n" if $ERR;
}
sub create_graph_mem ($$$$$) {
my $rrdlocation = shift;
my $location = shift;
my $host = shift;
my $offset = shift;
my $colours = shift;
my %colours = %{$colours};
my $type = "mem";
RRDs::graph ("$location$host.$type.$offset.png",
"--start", "-$offset",
"-l", "0",
"-a", "PNG",
"-u", "100",
"-t", "memory usage for $host",
"--base", "1024",
"--vertical-label", "% memory used",
"DEF:free=$rrdlocation$host.$type.rrd:free:AVERAGE",
"DEF:cache=$rrdlocation$host.$type.rrd:cache:AVERAGE",
"DEF:used=$rrdlocation$host.$type.rrd:used:AVERAGE",
"DEF:total=$rrdlocation$host.$type.rrd:total:AVERAGE",
"CDEF:peruse=total,free,total,LT,free,0,IF,-,total,/,100,*",
"CDEF:percacuse=cache,total,LT,cache,0,IF,total,/,100,*",
"AREA:peruse$colours{area}:Used ",
"GPRINT:peruse:LAST:Current\\: \%8.2lf %s",
"GPRINT:peruse:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:peruse:MAX:Max\\: \%8.2lf %s\\n",
"LINE2:percacuse$colours{line}:Cache",
"GPRINT:percacuse:LAST:Current\\: \%8.2lf %s",
"GPRINT:percacuse:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:percacuse:MAX:Max\\: \%8.2lf %s\\n",
"GPRINT:total:LAST:Current total memory\\: \%.2lf %sb\\c");
my $ERR=RRDs::error;
die "ERROR : $ERR\n" if $ERR;
}
sub create_graph_proc ($$$$$) {
my $rrdlocation = shift;
my $location = shift;
my $host = shift;
my $offset = shift;
my $colours = shift;
my %colours = %{$colours};
my $type = "proc";
RRDs::graph ("$location$host.$type.$offset.png",
"--start", "-$offset",
"-l", "0",,
"-a", "PNG",
"-t", "processes on $host",
"--units-exponent", "1",
"--vertical-label", "num of processes",
"DEF:running=$rrdlocation$host.$type.rrd:running:AVERAGE",
"DEF:sleeping=$rrdlocation$host.$type.rrd:sleeping:AVERAGE",
"DEF:stopped=$rrdlocation$host.$type.rrd:stopped:AVERAGE",
"DEF:zombie=$rrdlocation$host.$type.rrd:zombie:AVERAGE",
"AREA:stopped$colours{stack1}:stopped processes ",
"GPRINT:stopped:LAST:Current\\: \%8.2lf %s",
"GPRINT:stopped:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:stopped:MAX:Max\\: \%8.2lf %s\\n",
"STACK:zombie$colours{stack2}:zombie processes ",
"GPRINT:zombie:LAST:Current\\: \%8.2lf %s",
"GPRINT:zombie:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:zombie:MAX:Max\\: \%8.2lf %s\\n",
"STACK:sleeping$colours{stack3}:sleeping processes",
"GPRINT:sleeping:LAST:Current\\: \%8.2lf %s",
"GPRINT:sleeping:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:sleeping:MAX:Max\\: \%8.2lf %s\\n",
"STACK:running$colours{stack4}:running processes ",
"GPRINT:running:LAST:Current\\: \%8.2lf %s",
"GPRINT:running:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:running:MAX:Max\\: \%8.2lf %s\\n");
my $ERR=RRDs::error;
die "ERROR : $ERR\n" if $ERR;
}
sub create_graph_page ($$$$$) {
my $rrdlocation = shift;
my $location = shift;
my $host = shift;
my $offset = shift;
my $colours = shift;
my %colours = %{$colours};
my $type = "page";
RRDs::graph ("$location$host.$type.$offset.png",
"--start", "-$offset",
"-l", "0",,
"-a", "PNG",
"-t", "paging activity on $host",
"--units-exponent", "1",
"--vertical-label", "pages/second",
"DEF:in=$rrdlocation$host.$type.rrd:in:AVERAGE",
"DEF:out=$rrdlocation$host.$type.rrd:out:AVERAGE",
"AREA:in$colours{in}:pages in ",
"GPRINT:in:LAST:Current\\: \%8.2lf %s",
"GPRINT:in:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:in:MAX:Max\\: \%8.2lf %s\\n",
"LINE2:out$colours{out}:pages out",
"GPRINT:out:LAST:Current\\: \%8.2lf %s",
"GPRINT:out:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:out:MAX:Max\\: \%8.2lf %s\\n");
my $ERR=RRDs::error;
die "ERROR : $ERR\n" if $ERR;
}
sub create_graph_user ($$$$$) {
my $rrdlocation = shift;
my $location = shift;
my $host = shift;
my $offset = shift;
my $colours = shift;
my %colours = %{$colours};
my $type = "user";
RRDs::graph ("$location$host.$type.$offset.png",
"--start", "-$offset",
"-l", "0",
"-u", "1",
"-a", "PNG",
"-t", "users on $host",
"--units-exponent", "1",
"--vertical-label", "users logged in",
"DEF:num=$rrdlocation$host.$type.rrd:num:AVERAGE",
"LINE2:num$colours{line}:Logged in users",
"GPRINT:num:LAST:Current\\: \%8.2lf %s",
"GPRINT:num:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:num:MAX:Max\\: \%8.2lf %s\\n");
my $ERR=RRDs::error;
die "ERROR : $ERR\n" if $ERR;
}
sub create_graph_swap ($$$$$) {
my $rrdlocation = shift;
my $location = shift;
my $host = shift;
my $offset = shift;
my $colours = shift;
my %colours = %{$colours};
my $type = "swap";
RRDs::graph ("$location$host.$type.$offset.png",
"--start", "-$offset",
"-l", "0",
"-a", "PNG",
"-u", "100",
"-t", "swap use on $host",
"--base", "1024",
"--vertical-label", "% swap used",
"DEF:free=$rrdlocation$host.$type.rrd:free:AVERAGE",
"DEF:used=$rrdlocation$host.$type.rrd:used:AVERAGE",
"DEF:total=$rrdlocation$host.$type.rrd:total:AVERAGE",
"CDEF:peruse=total,free,total,LT,free,0,IF,-,total,/,100,*",
"AREA:peruse$colours{area}:Used",
"GPRINT:peruse:LAST:Current\\: \%8.2lf %s",
"GPRINT:peruse:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:peruse:MAX:Max\\: \%8.2lf %s\\n",
"GPRINT:total:LAST:Current total swap\\: \%.2lf %sb\\c");
my $ERR=RRDs::error;
die "ERROR : $ERR\n" if $ERR;
}
sub create_graph_disk ($$$$$$) {
my $rrdlocation = shift;
my $location = shift;
my $host = shift;
my $dev = shift;
my $offset = shift;
my $colours = shift;
my %colours = %{$colours};
my $type = "disk";
RRDs::graph ("$location$host.$type.$dev.$offset.png",
"--start", "-$offset",
"-l", "0",
"-a", "PNG",
"-t", "disk io on $host for $dev",
"--base", "1024",
"--vertical-label", "bytes per second",
"DEF:read_bytes=$rrdlocation$host.$type.$dev.rrd:read_bytes:AVERAGE",
"DEF:write_bytes=$rrdlocation$host.$type.$dev.rrd:write_bytes:AVERAGE",
"AREA:read_bytes$colours{in}:read bytes ",
"GPRINT:read_bytes:LAST:Current\\: \%8.2lf %s",
"GPRINT:read_bytes:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:read_bytes:MAX:Max\\: \%8.2lf %s\\n",
"LINE2:write_bytes$colours{out}:write bytes",
"GPRINT:write_bytes:LAST:Current\\: \%8.2lf %s",
"GPRINT:write_bytes:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:write_bytes:MAX:Max\\: \%8.2lf %s\\n");
my $ERR=RRDs::error;
die "ERROR : $ERR\n" if $ERR;
}
sub create_graph_net ($$$$$$) {
my $rrdlocation = shift;
my $location = shift;
my $host = shift;
my $dev = shift;
my $offset = shift;
my $colours = shift;
my %colours = %{$colours};
my $type = "net";
RRDs::graph ("$location$host.$type.$dev.$offset.png",
"--start", "-$offset",
"-l", "0",
"-a", "PNG",
"-t", "network io on $host for $dev",
"--base", "1024",
"--vertical-label", "bytes per second",
"DEF:rx=$rrdlocation$host.$type.$dev.rrd:rx:AVERAGE",
"DEF:tx=$rrdlocation$host.$type.$dev.rrd:tx:AVERAGE",
"AREA:rx$colours{in}:recieved bytes ",
"GPRINT:rx:LAST:Current\\: \%8.2lf %s",
"GPRINT:rx:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:rx:MAX:Max\\: \%8.2lf %s\\n",
"LINE2:tx$colours{out}:transmitted bytes",
"GPRINT:tx:LAST:Current\\: \%8.2lf %s",
"GPRINT:tx:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:tx:MAX:Max\\: \%8.2lf %s\\n");
my $ERR=RRDs::error;
die "ERROR : $ERR\n" if $ERR;
}
sub create_graph_fs ($$$$$$$) {
my $rrdlocation = shift;
my $location = shift;
my $host = shift;
my $dev = shift;
my $offset = shift;
my $mountpoint = shift || $dev;
my $colours = shift;
my %colours = %{$colours};
my $type = "fs";
$dev =~ s/:/\\:/g;
RRDs::graph ("$location$host.$type.$dev.$offset.png",
"--start", "-$offset",
"-l", "0",
"-a", "PNG",
"-u", "100",
"-t", "disk usage on $host for $mountpoint",
"--base", "1024",
"--vertical-label", "% used",
"DEF:used=$rrdlocation$host.$type.$dev.rrd:used:AVERAGE",
"DEF:size=$rrdlocation$host.$type.$dev.rrd:size:AVERAGE",
"DEF:used_inodes=$rrdlocation$host.$type.$dev.rrd:used_inodes:AVERAGE",
"DEF:total_inodes=$rrdlocation$host.$type.$dev.rrd:total_inodes:AVERAGE",
"CDEF:peruse=used,size,/,100,*",
"CDEF:perinode=used_inodes,total_inodes,/,100,*",
"AREA:peruse$colours{area}:space used ",
"GPRINT:peruse:LAST:Current\\: \%8.2lf %s",
"GPRINT:peruse:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:peruse:MAX:Max\\: \%8.2lf %s\\n",
"GPRINT:size:LAST:Current total space\\: \%.2lf %sb\\c",
"LINE2:perinode$colours{line}:inodes used",
"GPRINT:perinode:LAST:Current\\: \%8.2lf %s",
"GPRINT:perinode:AVERAGE:Average\\: \%8.2lf %s",
"GPRINT:perinode:MAX:Max\\: \%8.2lf %s\\n",
"GPRINT:total_inodes:LAST:Current total inodes\\: \%.2lf %s\\c");
my $ERR=RRDs::error;
die "ERROR : $ERR\n" if $ERR;
}
sub htmlheader ($) {
my $title = shift;
return "<html><head><meta http-equiv='refresh' content='60'>
<title>$title</title></head>
<body>";
}
sub htmlfooter () {
return "<p><img src='sg-p-small.png' alt='Powered by StatGraph' /></p>
</body></html>";
}
sub create_page ($$$$$) {
my $location = shift;
my $type = shift;
my $host = shift;
my $devname = shift;
my $offsets = shift;
# print " Creating graphs: $host $type $devname\n";
my %nicenames = (
'cpu' => "CPU utilisation for $host",
'load' => "Load averages for $host",
'mem' => "Memory usage for $host",
'page' => "Paging activity for $host",
'proc' => "Processes for $host",
'user' => "User activity for $host",
'swap' => "Swap usage for $host",
'disk' => "Disk IO for $host on $devname",
'net' => "Network IO for $host on $devname",
'fs' => "Filsystem Utilisation for $host on $devname");
my $dev = "";
$dev = ".$devname" if ($devname ne "");
open OUT, ">$location$host-$type$dev.html";
print OUT htmlheader("$nicenames{$type}");
print OUT "<h1>$nicenames{$type}</h1>\n";
print OUT "<p>Last updated: " . nice_date();
foreach my $offset (@$offsets) {
print OUT "<h2>" . nice_time($offset). "</h2><img src='$host.$type$dev.$offset.png'><br />\n";
}
close OUT;
}
sub nice_time ($) {
my $seconds = shift;
my $minute = '60';
my $hour = '3600';
my $day = 24 * $hour;
my $week = 7 * $day;
my $month = 4 * $week;
my $year = 365 * $day;
my @stack;
my $tmp = int($seconds / $year);
if ($tmp > 0) {
push @stack, "$tmp years";
$seconds = $seconds % $year;
}
$tmp = int($seconds / $month);
if ($tmp > 0) {
push @stack, "$tmp months";
$seconds = $seconds % $month;
}
$tmp = int($seconds / $week);
if ($tmp > 0) {
push @stack, "$tmp weeks";
$seconds = $seconds % $week;
}
$tmp = int($seconds / $day);
if ($tmp > 0) {
push @stack, "$tmp days";
$seconds = $seconds % $day;
}
$tmp = int($seconds / $hour);
if ($tmp > 0) {
push @stack, "$tmp hours";
$seconds = $seconds % $hour;
}
$tmp = int($seconds / $minute);
if ($tmp > 0) {
push @stack, "$tmp minutes";
$seconds = $seconds % $minute;
}
push (@stack, "$seconds seconds") if ($seconds > 0);
return join (", ", @stack);
}
sub nice_date () {
my ($seconds, $minutes, $hours, $day_of_month, $month, $year, $wday, $yday, $isdst) = localtime(time);
return sprintf("%02d:%02d:%02d-%04d/%02d/%02d\n", $hours, $minutes, $seconds, $year+1900, $month+1, $day_of_month);
}
1;

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#!/usr/bin/perl
$name = $ARGV[0];
$dnsdomainname = `dnsdomainname`;
chomp($dnsdomainname);
print "hosts.$name.displayname = $name.$dnsdomainname
hosts.$name.method = connect
hosts.$name.hostname = $name
hosts.$name.port = 27001
hosts.$name.comment = $name
"

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#!/usr/bin/perl
use strict;
use StatGraph;
use File::Copy;
## TODO: configure with getopt
my $config = "statgraph.conf";
## Get configuration
open CONFIG, $config || die "Cannot open $config: $!";
my @CONFIG = (<CONFIG>);
close CONFIG;
my %CONFIG = confparse(\@CONFIG);
my %HOSTS = %{$CONFIG{hosts}};
%CONFIG = %{$CONFIG{config}};
## Set default configuration options if they've not been specified
my $defaultport = $CONFIG{defaultport} || 27001;
my $offsets = $CONFIG{offsets} || '10800 86400 604800 2419200 31536000';
my @offsets = split(/\s+/, $offsets);
my $rrdlocation = $CONFIG{rrdlocation} || "rrd/";
my $graphlocation = $CONFIG{graphlocation} || "graphs/";
open INDEX, ">$graphlocation/index.html.tmp";
print INDEX htmlheader("StatGraph results");
print INDEX "<h1>StatGraph results</h1>";
print INDEX "<p>Last updated: " . nice_date;
print INDEX "<ul>";
## Main loop - run once for each host
foreach my $host (sort keys %HOSTS) {
print "+ $HOSTS{$host}{displayname}\n";
print INDEX "<li><a href='$host.html'>$host</a>";
print INDEX " - $HOSTS{$host}{comment}</li>";
my %ignore;
foreach (split(/\s+/, $HOSTS{$host}{ignore})) {
$ignore{$_} = 1;
}
open CACHE, "$rrdlocation$host.txt" || warn "$host has no cache\n";
my @res = (<CACHE>);
close CACHE;
my %results = sgparse(\@res);
## Simple check that we've got reasonable statgrab data
unless ($results{const}{0} eq '0') {
warn "Bad statgrab results for $host";
next;
}
open SUMM, ">$graphlocation$host.html";
print SUMM htmlheader("$host summary");
my %colours = %{$CONFIG{colour}};
print SUMM "<h1>$host summary for last " . nice_time($offsets[0]). "</h1>";
print SUMM "<p>$HOSTS{$host}{comment}</p>";
print SUMM "<p>Last updated: " . nice_date;
my %nicenames = (
'cpu' => "CPU utilisation for $host",
'load' => "Load averages for $host",
'mem' => "Memory usage for $host",
'page' => "Paging activity for $host",
'proc' => "Processes for $host",
'user' => "User activity for $host",
'swap' => "Swap usage for $host");
## Generate graphs
foreach ('cpu', 'load', 'mem', 'page', 'proc', 'user', 'swap') {
if (-e "$rrdlocation$host.$_.rrd") {
create_graph($rrdlocation, $graphlocation, $_, $host, '', \@offsets, '', \%colours);
create_page($graphlocation, $_, $host, '', \@offsets);
print SUMM "<h2>$nicenames{$_}</h2><a href='$host-$_.html'><img src='$host.$_.$offsets[0].png'></a><br />\n";
}
}
## net device RRDs
foreach my $dev (sort keys %{ $results{net} }) {
unless (defined $ignore{"net.$dev"}) {
if (-e "$rrdlocation$host.net.$dev.rrd") {
create_graph($rrdlocation, $graphlocation, 'net', $host, $dev, \@offsets, '', \%colours);
create_page($graphlocation, 'net', $host, $dev, \@offsets);
print SUMM "<h2>Network IO for $host on $dev</h2><a href='$host-net.$dev.html'><img src='$host.net.$dev.$offsets[0].png'></a><br />\n";
}
}
}
## disk device RRDs
foreach my $dev (sort keys %{ $results{disk} }) {
unless (defined $ignore{"disk.$dev"}) {
if (-e "$rrdlocation$host.disk.$dev.rrd") {
create_graph($rrdlocation, $graphlocation, 'disk', $host, $dev, \@offsets, '', \%colours);
create_page($graphlocation, 'disk', $host, $dev, \@offsets);
print SUMM "<h2>Disk IO for $host on $dev</h2><a href='$host-disk.$dev.html'><img src='$host.disk.$dev.$offsets[0].png'></a><br />\n";
}
}
}
## fs device RRDs
foreach my $dev (sort keys %{ $results{fs} }) {
unless (defined $ignore{"fs.$dev"}) {
if (-e "$rrdlocation$host.fs.$dev.rrd") {
create_graph($rrdlocation, $graphlocation, 'fs', $host, $dev, \@offsets, $results{fs}{$dev}{mnt_point}, \%colours);
create_page($graphlocation, 'fs', $host, $dev, \@offsets);
print SUMM "<h2>Filesystem Utilisation for $host on $dev</h2><a href='$host-fs.$dev.html'><img src='$host.fs.$dev.$offsets[0].png'></a><br />\n";
}
}
}
print SUMM htmlfooter;
close SUMM;
}
print INDEX "</ul>";
print INDEX htmlfooter;
close INDEX;
move("$graphlocation/index.html.tmp", "$graphlocation/index.html");

69
statgraph.conf.example Executable file
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###########################
# Default config options
#
# All these are optional, and override the defaults
## Number of seconds from "now" to generate graphs
## Default 3h 1d 1w 1m 1y
config.offsets = 10800 86400 604800 2419200 31536000
## Location for graphs and rrd files
config.graphlocation = graphs/
config.rrdlocation = rrd/
## Default port for 'connect' method
config.defaultport = 27001
## Colours for graphs
# contrasty stack colours, eg cpu.
config.colour.stack1 = #FF0000
config.colour.stack2 = #FFFF00
config.colour.stack3 = #00FFFF
config.colour.stack4 = #00FF00
config.colour.stack5 = #0000FF
# load colours
config.colour.load1 = #CECFFF
config.colour.load5 = #7375FF
config.colour.load15 = #0000FF
# colours for line on top of area graphs, like swap/mem
config.colour.area = #CECFFF
config.colour.line = #0000FF
# in refers to rx, bytes_read, etc...
config.colour.in = #00FF00
config.colour.out = #0000FF
###########################
# Hosts section
#
# REQUIRED: hosts.NAME.displayname
# REQUIRED: hosts.NAME.method
# OPTIONAL: hosts.NAME.comment
# OPTIONAL: hosts.NAME.ignore
#
# if using method = exec
# hosts.NAME.execcommand is REQUIRED
#
# if using method = connect
# hosts.NAME.hostname is REQUIRED
# hosts.NAME.port is OPTIONAL
hosts.kitten.displayname = kitten.example.com
hosts.kitten.method = connect
hosts.kitten.hostname = kitten.example.com
hosts.kitten.port = 27001
hosts.kitten.comment = development machine
hosts.kitten.ignore = net.dummy0 net.lo
hosts.nero.displayname = nero.example.com
hosts.nero.method = exec
hosts.nero.execcommand = ssh nero.example.com /usr/bin/statgrab
hosts.nero.comment = some random server
hosts.localhost.displayname = localhost.example.com
hosts.localhost.method = exec
hosts.localhost.execcommand = /usr/bin/statgrab
hosts.localhost.comment = This host

201
statgraph.pl Executable file
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#!/usr/bin/perl
# statgraph: A simple host resource graphing tool
# Copyright (C) 2004-2011 Ben Charlton <ben@spod.cx>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; see the file COPYING. If not, write to the Free
# Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301 USA, or see http://www.gnu.org
use strict;
use StatGraph;
## TODO: configure with getopt
my $config = "statgraph.conf";
## Get configuration
open CONFIG, $config || die "Cannot open $config: $!";
my @CONFIG = (<CONFIG>);
close CONFIG;
my %CONFIG = confparse(\@CONFIG);
my %HOSTS = %{$CONFIG{hosts}};
%CONFIG = %{$CONFIG{config}};
## Set default configuration options if they've not been specified
my $defaultport = $CONFIG{defaultport} || 27001;
my $rrdlocation = $CONFIG{rrdlocation} || "rrd/";
my $pid = $$;
my $parent = 0;
my @kids = ();
my $host;
## Main loop - run once for each host
FORK: foreach my $currhost (keys %HOSTS) {
my $newpid = fork();
if ( not defined $newpid ) {
# if return value of fork() is undef, something went wrong
die "fork didn't work: $!\n";
}
elsif ( $newpid == 0 ) {
# if return value is 0, this is the child process
$parent = $pid; # which has a parent called $pid
$pid = $$; # and which will have a process ID of its very own
@kids = (); # the child doesn't want this baggage from the parent
$host = $currhost;
last FORK; # and we don't want the child making babies either
}
else {
# the parent process is returned the PID of the newborn by fork()
push @kids, $newpid;
}
}
if ( $parent ) {
# if I have a parent, i.e. if I'm the child process
my %results;
my %ignore;
foreach (split(/\s+/, $HOSTS{$host}{ignore})) {
$ignore{$_} = 1;
}
## exec method
if ($HOSTS{$host}{method} eq 'exec') {
unless (defined $HOSTS{$host}{execcommand}) {
die "execcommand not specified for $host, skipping...";
}
%results = get_exec_results($HOSTS{$host}{execcommand}, "$rrdlocation$host.txt");
## Network socket connection method
} elsif ($HOSTS{$host}{method} eq 'connect') {
unless (defined $HOSTS{$host}{hostname}) {
die "hostname not specified for $host, skipping...";
}
my $port = $HOSTS{$host}{port} || $defaultport;
%results = get_net_results($HOSTS{$host}{hostname}, $port, "$rrdlocation$host.txt");
## Unknown method
} else {
die "Unknown method specified for $host, skipping...";
}
## Simple check that we've got reasonable statgrab data
unless ($results{const}{0} eq '0') {
die "Bad statgrab results";
} else {
print "got result for $host\n";
}
## Update RRDs
foreach ('cpu', 'load', 'mem', 'page', 'proc', 'user', 'swap') {
unless (-e "$rrdlocation$host.$_.rrd") {
create_rrd($rrdlocation, $_, $host, '');
}
}
update_rrd("$rrdlocation$host.cpu.rrd", sprintf("N:%s:%s:%s:%s:%s:%s:%s",
$results{cpu}{idle},
$results{cpu}{iowait},
$results{cpu}{kernel},
$results{cpu}{nice},
$results{cpu}{swap},
$results{cpu}{total},
$results{cpu}{user}));
update_rrd("$rrdlocation$host.load.rrd", sprintf("N:%s:%s:%s",
$results{load}{min1},
$results{load}{min5},
$results{load}{min15}));
update_rrd("$rrdlocation$host.mem.rrd", sprintf("N:%s:%s:%s:%s",
$results{mem}{cache},
$results{mem}{free},
$results{mem}{total},
$results{mem}{used}));
update_rrd("$rrdlocation$host.page.rrd", sprintf("N:%s:%s",
$results{page}{in},
$results{page}{out}));
update_rrd("$rrdlocation$host.proc.rrd", sprintf("N:%s:%s:%s:%s:%s",
$results{proc}{running},
$results{proc}{sleeping},
$results{proc}{stopped},
$results{proc}{total},
$results{proc}{zombie}));
update_rrd("$rrdlocation$host.user.rrd", sprintf("N:%s",
$results{user}{num}));
update_rrd("$rrdlocation$host.swap.rrd", sprintf("N:%s:%s:%s",
$results{swap}{free},
$results{swap}{total},
$results{swap}{used}));
## net device RRDs
foreach my $dev (keys %{ $results{net} }) {
unless (defined $ignore{"net.$dev"}) {
unless (-e "$rrdlocation$host.net.$dev.rrd") {
create_rrd($rrdlocation, 'net', $host, $dev);
}
update_rrd("$rrdlocation$host.net.$dev.rrd", sprintf("N:%s:%s:%s:%s:%s:%s",
$results{net}{$dev}{rx} || 0,
$results{net}{$dev}{tx} || 0,
$results{net}{$dev}{ipackets} || 0,
$results{net}{$dev}{opackets} || 0,
$results{net}{$dev}{ierrors} || 0,
$results{net}{$dev}{oerrors} || 0));
}
}
## disk device RRDs
foreach my $dev (keys %{ $results{disk} }) {
unless (defined $ignore{"disk.$dev"}) {
unless (-e "$rrdlocation$host.disk.$dev.rrd") {
create_rrd($rrdlocation, 'disk', $host, $dev);
}
update_rrd("$rrdlocation$host.disk.$dev.rrd", sprintf("N:%s:%s",
$results{disk}{$dev}{read_bytes},
$results{disk}{$dev}{write_bytes}));
}
}
## fs device RRDs
foreach my $dev (keys %{ $results{fs} }) {
unless (defined $ignore{"fs.$dev"}) {
unless (-e "$rrdlocation$host.fs.$dev.rrd") {
create_rrd($rrdlocation, 'fs', $host, $dev);
}
update_rrd("$rrdlocation$host.fs.$dev.rrd", sprintf("N:%s:%s:%s:%s",
$results{fs}{$dev}{used},
$results{fs}{$dev}{size},
$results{fs}{$dev}{used_inodes},
$results{fs}{$dev}{total_inodes}));
}
}
}
else {
# parent process needs to preside over the death of its kids
while ( my $kid = shift @kids ) {
my $reaped = waitpid( $kid, 0 );
unless ( $reaped == $kid ) {
warn "Something's up: $?\n";
}
}
}