Monitor logs folder and search for specific pattern

[amitw]

Hi All,

i'm trying to monitor a folder (Windows Server) and search for the latest file that was modified, then, i need to search inside that file for a specific string("error"), then, alert if the string found.

Appreciate your help.

Amit

[benjaminsmith]

Hi @amitw

Please take a look at the document below for example log checks in Nagios depending on what agent you're using to monitor the Windows Server.

Log Checks
https://support.nagios.com/kb/article/l ... s-787.html

[cdienger]

I'm not aware of a plugin that will perform both of these steps, but a simple powershell script can get this info:

Code: Select all

$results = Get-ChildItem 'C:\directory\' -File | Sort {$_.LastWriteTime} | select -last 1 | Select-String -Pattern error

if ($results -eq $null) {
	"string not found"
	exit 0
} else {
	"String Found"
	$results
	exit 2
}

It'd reside on the Windows server and be called by an agent like NCPA:

https://www.nagios.org/ncpa/
https://support.nagios.com/kb/article/n ... a-722.html

Plugin guidelines can be found at:

https://nagios-plugins.org/doc/guidelines.html

[amitw]

Thanks alot.
Can i make this script work also with NSclient ?

[scottwilkerson]

Thanks alot.
Can i make this script work also with NSclient ?

Yes, we have a guide on adding powershell scripts to NSClient here
https://support.nagios.com/kb/article.php?id=528