WMI HTTP

WMI Hyper Text Transfer Protocol (HTTP) Profile

This profile monitors HTTP services on a Windows server using Windows Management Instrumentation (WMI). Nagios Remote Plugin Executor (NRPE) is used by the Nagios server to communicate with the WMI proxy server. This proxy server queries the monitored Windows server for measurements and status using WMI.

Additionally, you may want to refer to the WMI documentation. This project consists of a collection of script monitors (.vbs for starters) that use the Microsoft .Net Framework and WMI to retrieve performance data from remote Windows hosts without the need for agents on the remote hosts.

Services Configuration

Service - Definitions in Monarch are stored under this name.
Command Line - Service command name with arguments to be passed to the plugin.
Plugin Command Line - Plugin script called by Nagios for this Service.

Extended Info - The Extended Service Info definition, typically used for generating graphs.

Command lines displayed below are intended to be single line commands.

Service	Command Line	Plugin Command Line	Extended Info
tcp_http_port	check_http_port!3!5!80	$USER1$/check_http -H $HOSTADDRESS$ -w "$ARG1$" -c "$ARG2$" -p "$ARG3$"	number_graph
wmi_service_HTTPFilter	check_wmi_service!HTTPFilter	$USER1$/check_nrpe -H $USER21$ -t 60 -c get_service -a "$HOSTADDRESS$" "$ARG1$"	percent_graph

Profile Package

This package includes the following files:

Profile Definitions

service-profile-wmi-http.xml
perfconfig-wmi-http.xml

Plugins Scripts on the GroundWork Server

check_nrpe
check_http

WMI Scripts on the WMI Proxy Server

nrpe_nt.zip

Performance Graphing Programs

number_graph.cgi
percent_graph.cgi

Installation

GroundWork Monitor includes many monitoring profiles for a variety of devices, systems and applications. Profiles already imported on a new GroundWork installation include Service Ping, SNMP Network, and SSH UNIX. The GroundWork Monitor Configuration tool is used to import updated Profiles and Profiles that require additional setup; the Profile XML file and its companion Performance Configuration definition file. Services can also be imported in addition to Service Profiles in the Profile Importer. The import process is documented under GROUNDWORK PROFILES > How to import profiles.

Implementation

This section contains detail settings used by this Profile. These parameters can be altered with the Configuration tool.

Command Parameters

Command parameters are in the Configuration Services section with the following names and default values.

tcp_http_port

Uses check_http plugin to get a web page from $HOSTADDRESS$
Default warning threshold is a 3 second page load time.
$ARG1$ - Warning seconds
Default critical threshold is a 5 second page load time.
$ARG2$ - Critical seconds
Default port is 80.
$ARG3$ - TCP port number

wmi_service

Uses check_nrpe plugin to connect to NRPE on the proxy server specified by the IP address in $USER21$. The server executes execute the script get_service command as defined in the nrpe.cfg file. This script queries the monitored server $HOSTADDRESS$ for service status using WMI.
$ARG1$ - Service Name (not Display Name!)
OK if service is running
CRITICAL is service is stopped.
UNKNOWN is service is not installed.

Performance Graphing Parameters

The following parameters are used to generate performance charts. These parameters are set using the Configuration>Performance tool in GroundWork Monitor.