Nagios Support Forum

Hi Team,

I am facing an issue while running check_tomcat script.

Command :-
check_tomcat -l myuser -a mypassword -p 8080

o/p :-
CRITICAL: /status/connector/threadInfo/@maxThreads is not numeric memory in use 944 MiB (1979 MiB); Critical: free_threads<0 threads[http-nio-8080]=1(0);|/status/connector/threadInfo/@maxThreads=not_numeric used=990607152 free=1085311184 max=2075918336 currentThreadsBusy=1 currentThreadCount=4 maxThreads=

can you please suggest what is going wrong? Why I am getting '/status/connector/threadInfo/@maxThreads is not numeric'?

Best Regards,
Poulami

What version of that plugin are you running and where did you download it from?
Can you post the plugin here so we can view it?

I did find on the internet that the bug you are having has been fixed in this version. Try upgrading to that and see if it fixes your issue.
https://exchange.nagios.org/directory/P ... pl/details

One more thing, try and set a warning and critical threshold and see if that helps as well.

-w ... warning thresholds for threads,memory (memory in MiB)
eg 20,50 or 10%,25% default is 25%,5%
-c ... critical thresholds for threads,memory (memory in MiB)
eg 10,20 or 5%,10%, default is 10%,2%

Hi,

I am using version 1.4 of the script.

command which i'm using is : I have attached the script for your reference.

Best Regards,
Poulami

The plugin is the correct version.
At this point, you will have to contact the Author of the plugin and see they could help out in that error.

Hi,
I had the same problem recently, the cause was that tomcat was reporting a negative number for some of the thread counts
e.g. Max threads: 150 Current thread count: -2 Current thread busy: -2

To stop this being an error modify line 278
from if ( $value =~ /^"?([0-9.]+)"?$/ ) {
to if ( $value =~ /^"?(\-?[0-9.]+)"?$/ ) {

i.e. You are adding \-? to the regexp to allow for an optional minus sign.

Ruairi

hickeyr wrote:Hi,
I had the same problem recently, the cause was that tomcat was reporting a negative number for some of the thread counts
e.g. Max threads: 150 Current thread count: -2 Current thread busy: -2

To stop this being an error modify line 278
from if ( $value =~ /^"?([0-9.]+)"?$/ ) {
to if ( $value =~ /^"?(\-?[0-9.]+)"?$/ ) {

i.e. You are adding \-? to the regexp to allow for an optional minus sign.

Ruairi

Thanks for sharing @hickeyr!


@Poulami could this be the problem?