Failover Cluster Status Test

Whenever a user complains of the inaccessibility of a resource (i.e., a server/service/application), the administrator should first check whether that resource is part of a cluster, and if so, check whether the Windows cluster service has been enabled and is running on each node of the cluster. This is where the Failover Cluster Status test helps. This test reports whether a monitored node is part of a cluster or not and if so, indicates whether/not the cluster service is enabled and running on that node. This way, administrators can be promptly alerted to the sudden termination or the absence of the cluster service on a cluster node. In addition, the test also reports the composition of the cluster – i.e., the number of nodes and services/applications that have been clustered as part of the monitored cluster setup.

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 every cluster 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.
  3. port – The port at which the specified HOST listens. By default, this is Null.
  4. DETAILED DIAGNOSIS – To make diagnosis more efficient and accurate, the eG Enterprise embeds an optional detailed diagnostic capability. With this capability, the eG agents can be configured to run detailed, more elaborate tests as and when specific problems are detected. To enable the detailed diagnosis capability of this test for a particular server, choose the On option. To disable the capability, click on the Off option.

    The option to selectively enable/disable the detailed diagnosis capability will be available only if the following conditions are fulfilled:

    • The eG manager license should allow the detailed diagnosis capability
    • Both the normal and abnormal frequencies configured for the detailed diagnosis measures should not be 0.
Measurements made by the test
Measurement Description Measurement Unit Interpretation

Does the cluster exist?

Indicates whether/not the cluster service is installed on the monitored node.

 

The values that this measure can report and their corresponding numeric values have been listed in the table below:

Measure Value Numeric Value
Yes 100
No 0

Note:

By default, this measure reports one of the Measure Values listed in the table above. The graph of this measure however will indicate whether/not the monitored server is cluster-enabled or not.

Cluster status

Indicates the current status of the cluster service on the target node.

 

The values that this measure can report and their corresponding numeric values have been listed in the table below:

Measure Value Numeric Value
Running 100
Stopped 0

Note:

By default, this measure reports one of the Measure Values listed in the table above. The graph of this measure however will indicate whether/not the cluster service is running using the numeric equivalents only.

Is the cluster active?

Indicates whether/not the cluster is currently activer.

 

The values that this measure can report and their corresponding numeric values have been listed in the table below:

Measure Value Numeric Value

Yes

100

No

0

Note:

By default, this measure reports one of the Measure Values listed in the table above. The graph of this measure however will report the status of the cluster service using the numeric equivalents only.

Number of services/applications

Indicates the number of services/applications that are currently clustered under this cluster.

Number

To know which services/applications are currently clustered, use the detailed diagnosis of this measure.

Number of nodes

Indicates the number of nodes in this cluster.

Number

To know which nodes are the members of the cluster, use the detailed diagnosis of this measure.

Use the detailed diagnosis of the Number of services/applications measure to know which services/applications have been configured for high availability under a cluster, and which cluster node owns each service/application. 

Figure 1 : The detailed diagnosis of the Number of services/applications measure

Use the detailed diagnosis of the Number of nodes measure to know which nodes are members of a cluster.

Figure 2 : The detailed diagnosis of the Number of nodes measure