CheckWMI

Check status via WMI

Enable module

To enable this module and and allow using the commands you need to ass CheckWMI = enabled to the [/modules] section in nsclient.ini:

[/modules]
CheckWMI = enabled

Queries

A quick reference for all available queries (check commands) in the CheckWMI module.

List of commands:

A list of all available queries (check commands)

Command	Description
check_wmi	Check a set of WMI values and return rows which are matching criteria.

List of command aliases:

A list of all short hand aliases for queries (check commands)

Command	Description
checkwmi	Alias for: :query:`check_wmi`

check_wmi

Check a set of WMI values and return rows which are matching criteria.

Samples
Command-line Arguments
Filter keywords

Sample Commands

To edit these sample please edit this page

Basic check to see/fetch information (no check)::

check_wmi "query=Select Version,Caption from win32_OperatingSystem"
OK: Microsoft Windows 8.1 Pro, 6.3.9600

A simple string check::

check_wmi "query=Select Version,Caption from win32_OperatingSystem" "warn=Version not like '6.3'" "crit=Version not like '6'"
OK: Microsoft Windows 8.1 Pro, 6.3.9600

Simple check via via NRPE::

check_nrpe --host 192.168.56.103 --command check_wmi -a "query=Select Version,Caption from win32_OperatingSystem" "warn=Version not like '6.3'" "crit=Version not like '6'"
OK: Microsoft Windows 8.1 Pro, 6.3.9600

A simple integer (number) check::

check_wmi "query=Select BuildNumber from win32_OperatingSystem" "warn=BuildNumber < 9600" "crit=BuildNumber < 8000"
L        cli OK: 9600
L        cli  Performance data: 'BuildNumber'=9600;9600;8000

Using performance options to customize the performance data::

check_wmi "query=select Name, AvgDiskQueueLength from Win32_PerfFormattedData_PerfDisk_PhysicalDisk" "warn=AvgDiskQueueLength>0" "perf-syntax=%(Name)" "perf-config=*(prefix:'time')"
L        cli OK: 0, _Total, 0, 0 C:, 0, 1 D:
L        cli  Performance data: 'time_Total'=0;0;0 'time0 C:'=0;0;0 'time1 D:'=0;0;0

Adding values to the message::

check_wmi "query=Select BuildNumber from win32_OperatingSystem" "warn=BuildNumber < 9600" "crit=BuildNumber < 8000" "detail-syntax=You have build %(BuildNumber)" show-all
L        cli OK: You have build 10240
L        cli  Performance data: 'BuildNumber'=10240;9600;8000

Command-line Arguments

Option	Default Value	Description
filter		Filter which marks interesting items.
warning		Filter which marks items which generates a warning state.
warn		Short alias for warning
critical		Filter which marks items which generates a critical state.
crit		Short alias for critical.
ok		Filter which marks items which generates an ok state.
debug	N/A	Show debugging information in the log
show-all	N/A	Show details for all matches regardless of status (normally details are only showed for warnings and criticals).
empty-state	ignored	Return status to use when nothing matched filter.
perf-config		Performance data generation configuration
escape-html	N/A	Escape any < and > characters to prevent HTML encoding
help	N/A	Show help screen (this screen)
help-pb	N/A	Show help screen as a protocol buffer payload
show-default	N/A	Show default values for a given command
help-short	N/A	Show help screen (short format).
top-syntax	${list}	Top level syntax.
ok-syntax		ok syntax.
empty-syntax		Empty syntax.
detail-syntax	%(line)	Detail level syntax.
perf-syntax		Performance alias syntax.
target		The target to check (for checking remote machines).
user		Remote username when checking remote machines.
password		Remote password when checking remote machines.
namespace	root\cimv2	The WMI root namespace to bind to.
query		The WMI query to execute.

filter:

Filter which marks interesting items. Interesting items are items which will be included in the check. They do not denote warning or critical state instead it defines which items are relevant and you can remove unwanted items.

warning:

Filter which marks items which generates a warning state. If anything matches this filter the return status will be escalated to warning.

critical:

Filter which marks items which generates a critical state. If anything matches this filter the return status will be escalated to critical.

ok:

Filter which marks items which generates an ok state. If anything matches this any previous state for this item will be reset to ok.

empty-state:

Return status to use when nothing matched filter. If no filter is specified this will never happen unless the file is empty.

Default Value: ignored

perf-config:

Performance data generation configuration TODO: obj ( key: value; key: value) obj (key:valuer;key:value)

top-syntax:

Top level syntax. Used to format the message to return can include text as well as special keywords which will include information from the checks. To add a keyword to the message you can use two syntaxes either ${keyword} or %(keyword) (there is no difference between them apart from ${} can be difficult to escape on linux).

Default Value: ${list}

ok-syntax:

ok syntax. DEPRECATED! This is the syntax for when an ok result is returned. This value will not be used if your syntax contains %(list) or %(count).

empty-syntax:

Empty syntax. DEPRECATED! This is the syntax for when nothing matches the filter.

detail-syntax:

Detail level syntax. Used to format each resulting item in the message. %(list) will be replaced with all the items formated by this syntax string in the top-syntax. To add a keyword to the message you can use two syntaxes either ${keyword} or %(keyword) (there is no difference between them apart from ${} can be difficult to escape on linux).

Default Value: %(line)

perf-syntax:

Performance alias syntax. This is the syntax for the base names of the performance data.

namespace:

The WMI root namespace to bind to.

Default Value: root\cimv2

Filter keywords

Option	Description
count	Number of items matching the filter. Common option for all checks.
crit_count	Number of items matched the critical criteria. Common option for all checks.
crit_list	A list of all items which matched the critical criteria. Common option for all checks.
detail_list	A special list with critical, then warning and finally ok. Common option for all checks.
list	A list of all items which matched the filter. Common option for all checks.
ok_count	Number of items matched the ok criteria. Common option for all checks.
ok_list	A list of all items which matched the ok criteria. Common option for all checks.
problem_count	Number of items matched either warning or critical criteria. Common option for all checks.
problem_list	A list of all items which matched either the critical or the warning criteria. Common option for all checks.
status	The returned status (OK/WARN/CRIT/UNKNOWN). Common option for all checks.
total	Total number of items. Common option for all checks.
warn_count	Number of items matched the warning criteria. Common option for all checks.
warn_list	A list of all items which matched the warning criteria. Common option for all checks.

Configuration

Path / Section	Description
/settings/targets	TARGET LIST SECTION

TARGET LIST SECTION

A list of available remote target systems

This is a section of objects. This means that you will create objects below this point by adding sections which all look the same.