Make this Nagios compatible

[riahc3]

Hello

I think this is a great script. Really thorough checking.

That being said, I think it should be Nagios compatible (or even fork it, although sync issues might occur). The script should be ran from a domain controller.

You can read the entire documentation here: https://assets.nagios.com/downloads/nagioscore/docs/nagioscore/3/en/pluginapi.html but the TL;DR is that your last line should be:

Write-Host "Whatever you want Nagios to display as text"
exit $variableholdingexitcode # 0 for OK, 1 for WARNING, 2 for CRITICAL and 3 for UNKNOWN

$variableholdingexitcode should be:

0 - OK
1 - WARNING
2 - CRITICAL
3 - UNKNOWN

OK is obviously that all checks have gone fine.

I think WARNING and CRITICAL should be defined by you and/or the user. You can, for example, decide that if there are six domain controllers and two cannot be reached, it is a WARNING status but if it cannot reach four, it should be a CRITICAL.

Not being able to resolve DNS against DCs should be a CRITICAL automatically with no WARNING state possible.

etc, etc....

And the user should also be able to -IncludeAsWarnings and pass a string array with checks he wants to be warnings if they fail or -ExcludeAsWarnings with again a string array with check he wants to ignore if they fail

Same with -IncludeAsCritical and -ExcludeAsCritical

Also -CompletelyInclude and -CompletelyExclude

UNKNOWN is mainly if the script fails for some reason out of your control....Running it on a 2003 DC if it isnt supported, should return a UNKNOWN for example.

I hope this gives you some ideas and Im sure plently more with input with even better ideas.

Thanks!

[PrzemyslawKlys]

Is there something that prevents you from using that now?

$Results = Invoke-Testimo -ReturnResults
if ($Results.Status -contains $false) {
    Write-Host "Errors happend"
    Exit 2
} else {
    Exit 0
}

Or is there something I'm missing?

[riahc3]

Is there something that prevents you from using that now?

$Results = Invoke-Testimo -ReturnResults
if ($Results.Status -contains $false) {
    Write-Host "Errors happend"
    Exit 2
} else {
    Exit 0
}

Or is there something I'm missing?

There is a lot of code but entering a few .ps1 files I dont see anywhere where there is a "final" Write-Host and Exit

Besides, looking at the code I doubt "Exit 0" would be used and it would be "Exit $LastStatusCode" or "$StatusOK=0 ; Exit $StatusOK"

I think the best way to is to setup a additional .ps1 with all the test but ending in a Nagios plugin logic.

[PrzemyslawKlys]

I mean you don't have to modify code. I'm trying to say, what you can do is do Install-Module Testimo, and then create your own .ps1, and then run the code I pasted. When you plug that into Nagios it should work as expected as far as I understand what you said? Testimo will deliver results, and you just need to "deliver" whatever you want to Nagios.

I can, of course, incorporate this at some point, but just trying to understand if the above would work?

[riahc3]

I mean you don't have to modify code. I'm trying to say, what you can do is do Install-Module Testimo, and then create your own .ps1, and then run the code I pasted. When you plug that into Nagios it should work as expected as far as I understand what you said? Testimo will deliver results, and you just need to "deliver" whatever you want to Nagios.

I can, of course, incorporate this at some point, but just trying to understand if the above would work?

I think you mean that I make a wrapper where inside I just call your functions and depending what they reply, I handle it to reply to Nagios.

There are a lot of checks you do so Im not sure which are critical or not, sorry.

[PrzemyslawKlys]

I understand. I have some ideas for that. Will take a while but hopefully will get implemented.