check_linux_stats

Hi Team ,

I am new in linux and using nagios , I want to understand what are these parameters works with this scripts .

/usr/local/nagios/libexec/check_linux_stats.pl -M -w 99,50 -c 100,50

What is the meaning of -w 99,50 and -c 100,50 . What are these values .

Please help me to understand it in memory script .

Regards
Parshant Bhardwaj

Nice little collection.

Is there a set of pnp4nagios templates for it?

I have made some changes to this plugin at https://github.com/apsivam/monitoring_plugins/blob/master/check_linux_stats.pl.
How can I submit PR?

My changes:
*) percentage based check for disk usage will return percentage perfdata instead of KB
*) added an option to exclude file systems types for disk usage check so that we can exclude file systems like tmpfs, devtmpfs, etc.

Hi,

Great work.

I am fairly new to linux and nagios. But is there a tutorial/Link to import and run a plugin?

Thanks in advance!

Congratulations for the plugin. I like a lot, but it seems to have problems to execute NRPE, as when I run this plugin with NRPE it is unable to read the output. I have seen that other people have the same error. Could you help us to execute this plugin in remote? I have configured it, but it doen't work.

The plugins is great.. working with everything really fine but while i am using the unit variable with MB for Network Usages then its showing the default KB value.

Works great!

I really like this plugin and have written an extension which I'd like to send to you.
However, I can't seem to reach the owner by email at [email protected]
I get a "550 5.2.1 This mailbox has been blocked due to inactivity" error message.
How can the owner be reached?

Hi!,This plugin is great i can do a lot of things with only one command,thanks to the developer.

In the shell all works fine,but i can't show it in the WEB-GUI(Of course before that I added the plugin to the nrpe.cfg and reload the nagios service.)

Whats is the problem here?

Thanks a lot for your support.

Check CPU is presenting problem, does anyone know what they have to modify the script?


/usr/lib64/nagios/plugins/check_linux_stats.pl -C -w 90 -c 95
CPU OK : idle 99.50% |idle=99.50%;90;95 user=0.00% system=0.00% iowait=0.50% steal=0.00%check_linux_stats v1.5
Usage: /usr/lib64/nagios/plugins/check_linux_stats.pl -C|-P|-M|-N|-D|-I|-L|-F|-S|-W|-U -p -w -c [-s ] [-u ] [-V] [-h]
-h, --help
print this help message
-C, --cpu=CPU USAGE
-P, --procs
-M, --memory=MEMORY USAGE
-N, --network=NETWORK USAGE
-D, --disk=DISK USAGE
-I, --io=DISK IO USAGE
-L, --load=LOAD AVERAGE
-F, --file=FILE STATS
-S, --socket=SOCKET STATS
-W, --paging=PAGING AND SWAPPING STATS
-X, --ctxt=CPU CONTEXT SWITCH
-U, --uptime
-p, --pattern
eth0,eth1...sda1,sda2.../usr,/tmp
-w, --warning
-c, --critical
-s, --sleep
-u, --unit
%, KB, MB or GB left on disk usage, default : MB
REQS OR BYTES on disk io statistics, default : REQS
-V, --version
version number

ex :
Memory usage : perl check_linux_stats.pl -M -w 90 -c 95
Cpu usage : perl check_linux_stats.pl -C -w 90 -c 95 -s 5
Disk usage : perl check_linux_stats.pl -D -w 95 -c 100 -u % -p /tmp,/usr,/var
Load average : perl check_linux_stats.pl -L -w 10,8,5 -c 20,18,15
Paging statistics : perl check_linux_stats.pl -W -w 10,1000,1 -c 20,2000,20 -s 3
Process statistics : perl check_linux_stats.pl -P -w 100 -c 200
I/O statistics on disk device : perl check_linux_stats.pl -I -w 10 -c 5 -p sda1,sda4,sda5,sda6
Network usage : perl check_linux_stats.pl -N -w 10000 -c 100000000 -p eth0
Processes virtual memory : perl check_linux_stats.pl -T -w 9551820 -c 9551890 -p /var/run/sendmail.pid
Cpu context switch : perl check_linux_stats.pl -X -w 6000 -c 70000 -s 2
Uptime : perl check_linux_stats.pl -U -w 5

Hi,

There's a small bug in v1.5 on line 62:

"if" should be "elsif" otherwise the -C (check_cpu) option will always show help.

Here's the diff:

--- /usr/lib/nagios/plugins/check_linux_stats.pl.org 2016-01-12 11:51:20.586228411 +0100
+++ /usr/lib/nagios/plugins/check_linux_stats.pl 2016-01-12 11:49:45.223925210 +0100
@@ -59,7 +59,7 @@
if($o_cpu){
check_cpu();
}
-if($o_context){
+elsif($o_context){
check_context_switch();
}
elsif($o_mem){

Hello,
great check.
I've found a little bug using hte CPU count.
It show me , on the perfdata, the entire help screen, just after the steal percentage:

[root@ph742502]/usr/local/nagios/libexec# ./check_linux_stats.pl -C -w 70 -c 100 -s 2
CPU OK : idle 91.85 |idle=91.85%;70;100 user=0.59% system=0.34% iowait=7.12% steal=0.00%check_linux_stats v1.5
Usage: ./check_linux_stats.pl -C|-P|-M|-N|-D|-I|-L|-F|-S|-W|-U -p -w -c [-s ] [-u ] [-V] [-h]
-h, --help
print this help message
-C, --cpu=CPU USAGE
-P, --procs
-M, --memory=MEMORY USAGE

Could be possible to solve?
i was not able to find it on the check_cpu section, it looks ok to me (but i'm not a programmer).

Thank you.

Michele

Very good plugin.

Last version 1.5
check_cpu should be followed by a elsif.

--- check_linux_stats.pl.old 2016-01-06 22:06:17.000000000 +0100
+++ check_linux_stats.pl 2016-01-06 22:03:33.582324204 +0100
@@ -59,7 +59,7 @@
if($o_cpu){
check_cpu();
}
-if($o_context){
+elsif($o_context){
check_context_switch();
}
elsif($o_mem){

jfr

Nice plugin. I added a check to paging statistics to check for major faults. diff follows.

--- check_linux_stats.pl 2015-09-11 12:22:42.977785368 -0500
+++ check_linux_stats.pl.orig 2015-08-21 09:11:02.000000000 -0500
@@ -533,22 +533,21 @@
if(defined($stat->pgswstats)) {
$status = "OK";
my $page = $stat->pgswstats;
- my ($warn_in,$warn_out,$warn_flt) = split(/,/,$o_warning);
- my ($crit_in,$crit_out,$crit_flt) = split(/,/,$o_critical);
- if((($page->{pgpgin}>=$crit_in)&&($page->{pgpgout}>=$crit_out))||($page->{pgmajfault}>=$crit_flt)) {
+ my ($warn_in,$warn_out) = split(/,/,$o_warning);
+ my ($crit_in,$crit_out) = split(/,/,$o_critical);
+ if(($page->{pgpgin}>=$crit_in)||($page->{pgpgout}>=$crit_out)) {
$status = "CRITICAL";
}
- elsif((($page->{pgpgin}>=$warn_in)&&($page->{pgpgout}>=$warn_out))||($page->{pgmajfault}>=$warn_flt)) {
+ elsif(($page->{pgpgin}>=$warn_in)||($page->{pgpgout}>=$warn_out)) {
$status = "WARNING";
}

my $perfdata = "|"
."pgpgin=$page->{pgpgin};$warn_in;$crit_in;0 "
."pgpgout=$page->{pgpgout};$warn_out;$crit_out;0 "
- ."pgmajfault=$page->{pgmajfault};$warn_flt;$crit_flt;0 "
."pswpin=$page->{pswpin} pswpout=$page->{pswpout}";

- print "Paging $status : in:$page->{pgpgin},out:$page->{pgpgout},flt:$page->{pgmajfault} $perfdata";
+ print "Paging $status : in:$page->{pgpgin},out:$page->{pgpgout} $perfdata";
}
else {
print "No data";
@@ -627,7 +626,7 @@
Cpu usage : perl check_linux_stats.pl -C -w 90 -c 95 -s 5
Disk usage : perl check_linux_stats.pl -D -w 95 -c 100 -u % -p /tmp,/usr,/var
Load average : perl check_linux_stats.pl -L -w 10,8,5 -c 20,18,15
- Paging statistics : perl check_linux_stats.pl -W -w 10,1000,1 -c 20,2000,20 -s 3
+ Paging statistics : perl check_linux_stats.pl -W -w 10,1000 -c 20,2000 -s 3
Process statistics : perl check_linux_stats.pl -P -w 100 -c 200
I/O statistics on disk device : perl check_linux_stats.pl -I -w 10 -c 5 -p sda1,sda4,sda5,sda6
Network usage : perl check_linux_stats.pl -N -w 10000 -c 100000000 -p eth0

Hi,
This plugin is indeed superb.
I found a bug that when using unit=MB for disk usage, the perf data writtens only KB.

So to fix, i made changes on line no. 378 from

$perfdata .= " $mountpoint=$usage$o_unit";

To

$perfdata .= " $mountpoint=$tmpusage$o_unit;;;0;$tmptotal";

Addition $tmptotal in perf data will set the max MB in the graph.

Let me know,

regards,
John.

I have a perfcounter problem with 1.4.1 :

/usr/lib/nagios/plugins/check_linux_stats.pl -p sda2,sda5 -I -w 100,70 -c 150,100 [16:04:44]
DISK IO OK |sda2_read=0.00;100;150 sda2_write=0.00;70;100|sda5_read=0.00;100;150 sda5_write=0.00;70;100

Need this result :

DISK IO OK |sda2_read=0.00;100;150 sda2_write=0.00;70;100 sda5_read=0.00;100;150 sda5_write=0.00;70;100

I recently tried to email the owner of this plugin however I got the following error:

Google tried to deliver your message, but it was rejected by the server for the recipient domain free.fr by mx1.free.fr. [212.27.48.6].

The error that the other server returned was:
550 5.2.1 This mailbox has been blocked due to inactivity

I ran into 2 really minor issues;
- Sys:Statistics relies on YAML:Syck, but the plugin doesn't complain if that fails.
- the plugin itself does not mention that the -I option needs 2 -w and -c variables.

and I have a small request as well; on virtual machines using lvm you often have a lot of 'disks' attached but most of them are loopback and virtual devices, if you add an option no-fake-disks-for-me-no-sirree (or a shortcut for that), you could loop through the devices in /sys/block/ and use readlink to remove the virtual devices from the list. This saves a lot of output when you don't want to use -p.

Hi,

First of all, I want to congratulate you on your excellent work with this plugin!
I have a question, I don't understand at all how are obtained the net statistics...
If I check TxBytes in /proc/net/dev to review statistics for bond0, I watch a large number in bytes: 7342573046357

Inter-| Receive | Transmit
face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed
bond0:1259548428146 14687025821 0 0 0 0 0 0 7342573046357 15194696711 0 0 0 0 0 0

But, If I check the Nagios web interface, this amount doesn't match with the previous value:
/proc/net/dev = 7342573046357
Nagios Web = 5323572.80B

How the plugin estimate these values on the Nagios web interface?

Thanks in advance.

Hi,

Thanks for the great plugin. If NFS mounts on the system are unresponsive then an unrelated disk check using this plugin times out.

Can this be fixed?

Hi Experts,

I have issue with this scripts for memory use in percent. I did not checked about other matter but memory usages showing in very less, but other commands for memroy showing accurate value. as below output.

[root@eam1 libexec]# ./check_linux_stats.pl -M -w 99,50 -c 100,50
MEMORY OK : Mem used: 47.27%, Swap used: 3.18% |MemUsed=47.27%;99;100 SwapUsed=3.18%;50;50 MemCached=52.11% SwapCached=0.98% Active=71.91%
[root@eam1 libexec]# sar -r 1 3
Linux 2.6.18-8.el5 (eam1.cmm.icms.in) 09/23/2014

12:15:11 PM kbmemfree kbmemused %memused kbbuffers kbcached kbswpfree kbswpused %swpused kbswpcad
12:15:12 PM 109176 18371676 99.41 550200 9630152 15866008 520284 3.18 160076
12:15:13 PM 118524 18362328 99.36 550200 9630156 15866008 520284 3.18 160076
12:15:14 PM 118648 18362204 99.36 550200 9630156 15866008 520284 3.18 160076
Average: 115449 18365403 99.38 550200 9630155 15866008 520284 3.18 160076
[root@eam1 libexec]# free -m
total used free shared buffers cached
Mem: 18047 17931 116 0 537 9404
-/+ buffers/cache: 7989 10057
Swap: 16002 508 15494
---------------------

perl script showing 47.27% but sar and nmon and top is showing 98 or 99 percent usage.

Kindly help me for this to get accurate output.

Regards,
Subhash ([email protected])

Hello,
nice plugins. I found one problem:
Example for checking disk suggest using limits for "disk full":
perl check_linux_stats.pl -D -w 95 -c 100 -u % -p /tmp,/usr,/var
but plugins uses limits for "disk free":
[krizb@kriznb linux]$ df -h /var
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg0-varF 4.9G 3.2G 1.5G 69% /var
[krizb@kriznb linux]$ /usr/lib64/nagios/plugins/check_linux_stats.pl -D -w 95 -c 100 -u % -p /var
DISK CRITICAL used : /var 30.47% free | /var=3322124KB
[krizb@kriznb linux]$ /usr/lib64/nagios/plugins/check_linux_stats.pl -D -w 5 -c 0 -u % -p /var
DISK OK used : /var 30.47% free | /var=3322124KB
[krizb@kriznb linux]$

Hi,

Came across your useful plugin for monitoring Linux Stats. I have downloaded the check_linux perl package and installed it on my remote server. But I’ve issues to run the following plugin. To be honest I’m a newbie into this nagios monitoring server and how to configure it. Appreciate if you could lead me to the correct direction

As far as my concerned my steps is as below

At host/remote server

1. root@server# cd /root/nagios
2. root@server nagios# wget http://exchange.nagios.org/components/com_mtree/attachment.php?link_id=2516&cf_id=24
3. root@server nagios# tar –zxvf Sys-Statistics-Linux-0.66.tar.gz
4. root@server nagios# cd Sys-Statistics-Linux-0.66
5. root@server Sys-Statistics-Linux-0.66# perl Makefile.PL
6. root@server Sys-Statistics-Linux-0.66# make
7. root@server Sys-Statistics-Linux-0.66# make install
8. root@server# vi /usr/local/nagios/etc/nrpe.cfg

and I add the harcoded command argument in the nrpe.cfg

# Check network usage on eth0
command[check_net]=/usr/local/nagios/libexec/check_linux_stats.pl -N -w 1000000 -c 1500000 -p eth0 -s 5

9. restart xinetd service && restart nrpe service


At monitoring server

1. Install theLinux Stats plugin same as above

2. go to cd /usr/local/nagios/etc/service.cfg and add the following:

define service{
use generic-service
host_name fastrocom.com
service_description Network Usage
check_command check_nrpe!check_net
}
3. go to cd /usr/local/nagios/etc/objects/command.cfg and add the following:

# 'check_net_usage' command definition
define command{
command_name check_net
command_line $USER1$/check_net -I $HOSTADDRESS$ $ARG1$
}

I believe I miss a few steps and due to this I’m unable to generate the report at Nagios monitoring System. If I go to /usr/local/nagios/libexec/ there is no linux stats plugin available at that directory

Your guidance and advice is highly appreciated

I know some people have asked in earlier comments how to generate perf data to go into nagiosgraph, but I can't get it to work.

Nagiosgraph is saying "no data available". Can you tell me how to get this working?

290,291c290,295
{swapused}/$mem->{swaptotal})*100);
{swapcached}/$mem->{swaptotal})*100);
---
> my $swapused = 0;
> my $swapcached = 0;
> if($mem->{swaptotal}>0) {
> $swapused = sprintf("%.2f", ($mem->{swapused}/$mem->{swaptotal})*100);
> $swapcached = sprintf("%.2f", ($mem->{swapcached}/$mem->{swaptotal})*100);
> }
294c298
=$mem_crit)||($swapused>=$swap_crit)) {
---
> if(($memused>=$mem_crit)||(($swapused>=$swap_crit) && ($swapused>0))) {
297c301
=$mem_warn)||($swapused>=$swap_warn)) {
---
> elsif (($memused>=$mem_warn)||(($swapused>=$swap_warn) && ($swapused>0))) {


Sorry, I do not write English well.

Do you still maintain this plugin? If that's the case where can one send patches to you?

Hello,
Great job this check worked great out of the box, I applied ruddockr suggestion to have CPU usage and not Idle time.
I noticed two small issues :

If you do not have any swap you get the divide by zero error noticed by helium_rday, as a quick fix I added a +1 in the division at line 290 and 291.

I always get a empty disk io, the perfdata are there but the output is always :
DISK OK io : |sda1_read=0.00;100;150 sda1_write=0.00;70;100 with nothing after the "io : ". I'm not a Perl expert but I noticed that the $return_str is initiliazed but no data is added to it.

Hi! Thanks for this excellent plugin.
Are there any pnp4nagios templates for this plugin?

Hi.
Great plugin.
You display a graph with three data sets for memory. While I can create the data using the plugin I do not know how to create the graph.
Could you elaborate how you created the graph, please?
thank you
Jobst

Excellent plugin. VERY useful.

The only problem I'm having is with the check_network_usage check. All the other checks work, but check_network_usage returns "NRPE: Unable to read output". When i run the check on the remote host manually, it gives the correct output, but falls over at some point during the NRPE check when run from the nagios host.

Any ideas?

kindly provide ur help to add this plugins to monitor remote host through nrpe

Hi

Please check the calculation of the free memory (physical).

Currently this is the value of memused:

$memused = ($mem->{memused} / $mem->{memtotal}*100);

But you will have to calculate also with the cached memory.
> $memused = sprintf("%.2f", $memused - $memcached);

This is at least the real free memory.

Especially on RedHat based systems almost the whole physical memory will be allocated and only be provided for usage out of the cached memory. Means: once loaded component's required memory stays reserved for the OS for faster re-allocation but it can be freed if the remaining physical memory goes down very fast.

Regards
Jochen

This is a very nicely designed and useful plugin. The only improvement I can suggest is being able to pass a program name rather than the PID file name.

And for those who couldn't find graphs, graphs are available through nagiosgraph (http://nagiosgraph.sourceforge.net/) which is a small 5-minute setup.

Hi How can I graph the cpu utilization

Im able to get all the checks finally condensed into one nice neat script. One thing of the future todo list.

Have an issue thought, the uptime check is returning a status of unknown. Doesn't seem to be effected by the -w -c on the command.

Great plugin - and yielding great info for nagiosgraph too!
Just one tweak that makes the graph more sensible to read.
default output is %idle which can be 100% all the time if a quiet server.
I changed this to return to CPU busy time (based on cpu_used variable)

code change snippett at line 120-126 (under check_cpu sub):
120 my $perfdata .= "|"
121 ."user=$cpu->{user}% "
122 ."system=$cpu->{system}% "
123 ."iowait=$cpu->{iowait}% "
124 ."InUse=$cpu_used%;$o_warning;$o_critical";
125
126 print "CPU $status : InUse $cpu_used% $perfdata";


Richard

Hi
We had an error first when trying to use the plugin. After changing the following lines it worked perfectly:
#use lib "/usr/local/nagios/libexec";
use FindBin;
use lib "$FindBin::Bin";

(replaced the lib definition)

Friendly regards, Till

I have run the install as described below

#Get and scp the files:
wget http://search.cpan.org/CPAN/authors/id/M/MS/MSCHWERN/Test-Simple-0.98.tar.gz
wget http://search.cpan.org/CPAN/authors/id/B/BL/BLOONIX/Sys-Statistics-Linux-0.66.tar.gz


# On the host get makemaker:
yum install perl-ExtUtils-MakeMaker.ppc64 -y
# Install the required modules:
tar xzf Test-Simple-0.98.tar.gz
cd Test-Simple-0.98
perl Makefile.PL
make
make test
make install
cd ..
tar xzf Sys-Statistics-Linux-0.66.tar.gz
cd Sys-Statistics-Linux-0.66
perl Makefile.PL
make
make test
make install

and put in the entries as you described
# command.cfg on nagios server
# $ARG1$ = check_cpu_usage,check_mem_usage,etc..

define command{
command_name check_nrpe
command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$
}

# nrpe.cfg on the remote server
command[check_cpu_usage]=/usr/local/nagios/libexec/check_linux_stats.pl -C -w 90 -c 100 -s 5

command[check_load_average]=/usr/local/nagios/libexec/check_linux_stats.pl -L -w 10,8,5 -c 20,18,15

command[check_memory_usage]=/usr/local/nagios/libexec/check_linux_stats.pl -M -w 99,50 -c 100,50

command[check_disk_usage]=/usr/local/nagios/libexec/check_linux_stats.pl -D -w 10 -c 5 -p /,/usr,/tmp,/var

command[check_disk_io]=/usr/local/nagios/libexec/check_linux_stats.pl -I -w 100,70 -c 150,100 -p sda1,sda2,sda4

command[check_network_usage]=/usr/local/nagios/libexec/check_linux_stats.pl -N -w 30000 -c 45000 -p eth0

command[check_open_files]=/usr/local/nagios/libexec/check_linux_stats.pl -F -w 10000,150000 -c 15000,250000

command[check_socket_usage]=/usr/local/nagios/libexec/check_linux_stats.pl -S -w 1000 -c 2000

command[check_number_procs]=/usr/local/nagios/libexec/check_linux_stats.pl -P -w 1000 -c 2000

but i get a NRPE: Command 'check_linux_stats.pl' not defined

am i missing something in the host config file hostname.cfg ?

any help welcome thanks :-)

Paul

I love the idea of all the stats coming from one script. Had to modify a bit, to get the cache out of the "used" memory.

Also, Sys::Statistics::Linux reports network traffic in "bytes". However you are appending "KB" to the output, but I don't see the conversion in your script. Shouldn't this be appending "B" instead?

Great plugin!

When running the memory example however i get the following error:

15:34:18 /usr/local/icinga/libexec $ perl check_linux_stats.pl -M -w 90 -c 95
Illegal division by zero at check_linux_stats.pl line 250.

All the other checks, such as CPU, load, process vmem, network, io, etc work perfectly.

Thoughts?

I have this error NRPE: Command 'check_cpu_usage' not defined. It is the same for all other commands.
This command works on my remote server which i want to monitor . /usr/local/nagios/libexec/check_nrpe -H localhost -c check_load
However running /usr/local/nagios/libexec/check_nrpe -H localhost -c /usr/local/nagios/libexec/check_linux_stats.pl -M
does not work. it says that the plugin requires that i have NRPE daemon running on the remote host. My remote host does have NRPE daemon running. Furthermore, adding the command into nrpe.cfg and adding it into the service gives me NRPE: Command "check_memory_usage"not defined.
sorry for bad english

Hey! I just coded a 3 bash scripts ignoring this great great plugin!

I got some comments that may interest you or the community:

RedHat installation without a direct CPAN access:
##################################################
#Get and scp the files:
wget http://search.cpan.org/CPAN/authors/id/M/MS/MSCHWERN/Test-Simple-0.98.tar.gz
wget http://search.cpan.org/CPAN/authors/id/B/BL/BLOONIX/Sys-Statistics-Linux-0.66.tar.gz


# On the host get makemaker:
yum install perl-ExtUtils-MakeMaker.ppc64 -y
# Install the required modules:
tar xzf Test-Simple-0.98.tar.gz
cd Test-Simple-0.98
perl Makefile.PL
make
make test
make install
cd ..
tar xzf Sys-Statistics-Linux-0.66.tar.gz
cd Sys-Statistics-Linux-0.66
perl Makefile.PL
make
make test
make install
# You got it!
##################################################

Second, memory usage is reporting used as used+cached, so it could be misleading, I'll modify for my environment IDK if you would like to patch your code.

THANK YOU for sharing your amazing piece of work!

Hi,

Please let me know what is means..

check_linux_stats.pl -L -w 10,8,5 -c 20,18,15 --- for Load

Please reply to me on [email protected]

Very nice plugin!

But how to use for remote hosts and syntax in
commands.cfg...
Thanks a lot!

Hi,

The Usage message for the script suggests there is a "-H " option, but it doesnt appear to be actually implemented. Any chance you have a version in the pipeline that will have that working? At the moment I would need too use NRPE to utilise this plugin. No biggie I suppose, but a "-H" option would mean I dont need to configure NRPE on all linux hosts.

Marc

Well, i have the same query as the guy above..how do i generate the graph? it works fine so far with command configs but the graph part i have no idea how to go by it! please assist!

Hi, this is a really nice plugin based on my module Sys::Statistics::Linux. You should also view the original bloonix plugins on http://download.bloonix.net/sources. Note that the statistic output is in YAML format.

install the package libsys-statistics-linux-perl, it comes with /usr/share/perl5/Sys/Statistics/Linux.pm

but how can i use the graph?

When i do a local check with the example
./check_linux_stats.pl -C -w 90 -c 100 -s 5
I get a error (see underneath).
It seems he misses a perl module. Is this right?
I could find a perl-Sys-Statistics-Linux rpm (I'm on SLES 10 SP2). Do I have to install this?

Can't locate Sys/Statistics/Linux.pm in @INC (@INC contains: /usr/local/nagios/libexec /usr/lib/perl5/5.8.8/x86_64-linux-thread-multi /usr/lib/perl5/5.8.8 /usr/lib/perl5/site_perl/5.8.8/x86_64-linux-thread-multi /usr/lib/perl5/site_perl/5.8.8 /usr/lib/perl5/site_perl /usr/lib/perl5/vendor_perl/5.8.8/x86_64-linux-thread-multi /usr/lib/perl5/vendor_perl/5.8.8 /usr/lib/perl5/vendor_perl .) at ./check_linux_stats.pl line 31.
BEGIN failed--compilation aborted at ./check_linux_stats.pl line 31.