Enable new Windows Server 2019 in nagios

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Enable new Windows Server 2019 in nagios

Postby hausrocker » Wed Jan 13, 2021 9:54 am

I have updated a server that is already included in our nagios (3.5.0) with some checks:
RAM, CPU, hard disk C and D plus uptime.
The check in the file windows.cfg looks like this:

define service{
use generic-service
host_name DEGHUV02
service_description CPU Auslastung
check_command check_snmp_load
}

define service{
use generic-service
host_name DEGHUV02
service_description Arbeitsspeicher
check_command check_snmp_storage!'Physical Memory'!90!95
}

define service{
use generic-service
host_name DEGHUV02
service_description Platte C
check_command check_snmp_storage!^C:!85!90
}

define service{
use generic-service
host_name DEGHUV02
service_description Platte D
check_command check_snmp_storage!^D:!92!93


On the old Windows Server 2012 I dont know how exactly it was configured but I could not see any NCP Client installed.
And now the checks give me the error: ERROR: Description/Type table : No response from remote host "192.168.82.43".

I already installed the NSClient++ (x64) version 0.5.2035 and the NCPA client 2.2.2 - but it still does not work.

I am not aware of any passwort. The commands.cfg config file looks like this:
# 'check_snmp_storage.pl' command definition
define command{
command_name check_snmp_storage
command_line $USER1$/check_snmp_storage.pl -H $HOSTADDRESS$ -C public -m $ARG1$ -w $ARG2$ -c $ARG3$
}


And that looks to me like there is no option with -s. So no password is set so I also did not set any in the config.
I also added the IP of the nagios server to allowed hosts with a ,

Windows firewall is also disabled.
What do I need to install on the Server and how to configure it to get this working again?
hausrocker
 
Posts: 3
Joined: Wed Jan 13, 2021 8:48 am

Re: Enable new Windows Server 2019 in nagios

Postby mcapra » Wed Jan 13, 2021 12:32 pm

Here's a guide for getting started with monitoring Windows machines via NCPA, which interfaces with the check_ncpa plugin:
https://assets.nagios.com/downloads/nag ... ndows.html

NSClient++ interfaces with the check_nrpe plugin.

It looks like you're using the check_snmp_storage plugin, which does not directly interface with NSClient++ or NCPA. It relies on the Windows SNMP daemon, which generally needs to be enabled manually by a Windows administrator. Here's the Microsoft documentation for how to do that:
https://docs.microsoft.com/en-us/troubleshoot/windows-server/networking/configure-snmp-service

Pay special attention to the "Configure SNMP security for a community" section of this documentation, as the community string you designate is what gets fed into the check_snmp_storage plugin via the -C argument.
Former Nagios employee
http://www.mcapra.com/
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mcapra
 
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Joined: Thu May 05, 2016 3:54 pm

Re: Enable new Windows Server 2019 in nagios

Postby hausrocker » Thu Jan 14, 2021 2:04 am

Thank you for that hint.
I knew from a different nagios installation that there is this option with the client and also that was the reason why it puzzled me that I could not find that on my server, even the ones where it is working right now.

I just had to add the IP of the nagios server to allowed clients and now it works. Great support.
hausrocker
 
Posts: 3
Joined: Wed Jan 13, 2021 8:48 am

Re: Enable new Windows Server 2019 in nagios

Postby hausrocker » Thu Jan 14, 2021 2:32 am

Thank you. That worked fine. Basically just had to add the IP of the nagios server to security config of the snmp service.
hausrocker
 
Posts: 3
Joined: Wed Jan 13, 2021 8:48 am


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