Check shared folder size

[W.W.]

Hi,
Excuse my English, it is not not my native language.

I have a nagios 4.1 to install(settle) and to configure all work well, I would like now to monitor 3 shared folders.
I arrive to monitor one of those folder by using a check nrpe

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 define service{
      use                          generic-service
      host_name                    $HOSTNAME
      service_description          Dossier FolderName	
      check_command                check_nrpe!check_files -H $HOSTNAME -a file="PATH" "warning=size>20000k" "detail-syntax=%(name) #size:%(size)"  total
}

For the 2 other folder I do the same thing, for one of them I have status information = Failed to process command: boost:: filesystem:: status: Access is denied: "D:FolderSubFolder"
and the other one contains more than 700 000 files and 45 000 folders but in the nagios Web interface under status information I have
OK: All 1 files are OK so there is something wrong
I am a novice concerning nagios and I do not know where his errors can come.
Thank you for your answers.

[mcapra]

I assume this is a Windows machine you are attempting to monitor?

If so, do you know which version of NSClient++ this Windows machine is using? It can usually be found with:

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check_nrpe -H windows_host_name

For example, here is me checking the NSClient++ version of a remote Windows machine in my lab environment:

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[root@xi-stable ~]# /usr/local/nagios/libexec/check_nrpe -H 192.168.67.99
I (0.5.0.62 2016-09-14) seem to be doing fine...

[W.W.]

Thanks for your reply.

Yes, it's a windows machine that running windows server 2003 and the nsclient++ version is 0.4.3.143-x64

[mcapra]

Can you share the full check commands your services are using? Back-slashes don't tend to cooperate well in Linux and will often need to be escaped. You can PM it if you would rather it not be public information.

[W.W.]

It's the commands that I have already specified at the top in the definition of the service

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check_nrpe!check_files -H $HOSTNAME -a file="D:\Folder\Name" "warning=size>20000k" "detail-syntax=%(name) #size:%(size)"  total

Thank again

[mcapra]

Right, but seeing the actual path confirms my suspicion that un-escaped back-slashes are used.

Since \ is a reserved character in just about every modern Linux CLI, and Nagios Core just piggy-backs off of that for executing plugins, you'll need to properly escape your Windows file paths like so:

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file="D:\\Folder\\Name"

Try using double backslashes instead for your paths.

[W.W.]

Ok, I use the double backslashe and i got the same result. In nagios web interface i still have OK: All 1 files are ok while there is not only a single file in this folder
Correct me if i'm wrong, the error could it come from the autorization on sharing folder ?

[mcapra]

Correct me if i'm wrong, the error could it come from the autorization on sharing folder ?

check_nrpe is going to reach out to NSClient++ to do the actual checking. So if the Windows system user the NSClient++ service is running under does not have read permissions on the folder and it's sub-folders, I can see that happening.

It's also worth mentioning that NSClient++ includes the root folder as a "file". See this example:

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[root@xi-stable httpd]# /usr/local/nagios/libexec/check_nrpe -H 192.168.67.99 -c check_files -a file="C:\\Users\\admin\\Documents\\files" "warning=size>20000k" "detail-syntax=%(name) #size:%(size)"  total
OK: All 6 files are ok|'test.txt size'=0MB;19.53125;0 'test3.txt size'=0MB;19.53125;0 'test4.txt size'=0MB;19.53125;0 'testlog.txt size'=0.00056MB;19.53125;0 'testlog_bob.txt size'=0.10288MB;19.53125;0 'total size'=0.10344MB;19.53125;0

The output says "6 files" when there are only 5 "files" in the directory. This is because the root directory is included as a "file":

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C:\Users\admin>dir "C:\Users\admin\Documents\files"
 Volume in drive C has no label.
 Volume Serial Number is CA4B-B3F3

 Directory of C:\Users\admin\Documents\files

10/19/2016  06:36 PM    <DIR>          .
10/19/2016  06:36 PM    <DIR>          ..
07/08/2016  07:53 PM                 0 test.txt
08/18/2016  04:20 PM                 0 test3.txt
07/08/2016  07:53 PM                 0 test4.txt
10/17/2016  09:43 PM               590 testlog.txt
10/19/2016  08:45 PM           107,879 testlog_bob.txt
               5 File(s)        108,469 bytes
               2 Dir(s)  30,933,823,488 bytes free

[W.W.]

I gonna check it out and come back to you. For the fact that NSClient++ include the directory as a file i noticed that during my test

Thank you for your time

[mcapra]

Sure thing! Let us know if you have additional questions regarding this.