Failover Cluster WMI Connectivity Test

WMI is Windows Management Instrumentation, which is an interface through which Windows components can provide information and notifications to each other, often between remote computers. Failover Clustering and System Center Virtual Machine Manager (SCVMM) often use WMI to communicate between cluster nodes, so if there is an issue contacting a cluster node, it is primarily essential to see if the WMI service is up and running. In some cases, the cluster nodes may not be able to communicate with each other even when the WMI service is up and running much to the agony of the administrators. To troubleshoot this communication failure, administrators should often verify if the namespace of the WMI service for the cluster is available to all the cluster nodes. The Failover Cluster WMI Connectivity test comes in handy to the administrators in this regard!

This test reports the current state of the WMI service and if the WMI service is running, this test will also report the connectivity status of the failover cluster WMI.

Target of the test : A node in a Windows cluster

Agent deploying the test : An internal agent

Outputs of the test : One set of results for the WMI service of the cluster node being monitored

Configurable parameters for the test
  1. TEST PERIOD – How often should the test be executed
  2. Host - The host for which the test is to be configured.
Measurements made by the test
Measurement Description Measurement Unit Interpretation

WMI service status:

Indicates the current state of the WMI service.

 

The values that this measure can report and the states they indicate have been listed in the table below:

State Numeric value

Running

100

Start Pending

90

Continue Pending

70

Pause Pending

60

Paused

50

Stop Pending

20

Stopped

10

Note:

By default, this measure can report the States mentioned above while indicating the current state of the WMI. However, the graph of this measure is indicated using the numeric equivalents.

Failover cluster WMI connectivity:

Indicates the connectivity status of the failover clustering WMI.

 

The values that this measure can report and the states they indicate have been listed in the table below:

State Numeric value

Connected

100

Not Connected

90

Not Installed

70

Note:

By default, this measure can report the States mentioned above while indicating the connectivity status of the failover clustering WMI. However, the graph of this measure is indicated using the numeric equivalents.