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Important This documentation space contains information about the on-premises version of BMC Helix Discovery. If you are using the SaaS version of BMC Helix Discovery, see BMC Helix Discovery (SaaS).

Cluster Resource node

A Cluster Resource node represents finer details about the configuration of the clustered service. A cluster resource can be a shared storage that is used by the service or a software that is used to implement the service. For example, the clustered Microsoft SQL Server service contains a SQL Server resource and a SQL Server Agent resource.

Each instance of the Cluster Resource node can contain any number of attributes, which will be used to match SIs to Cluster Services later on. Cluster Resource nodes are fully owned and controlled by BMC Discovery patterns. For detailed information about patterns, see the The-Pattern-Language-TPL and Configipedia.

Cluster Resource node lifecycle

The following section describes the scenarios in which a Cluster Resource node is created, updated, or removed.

Create

The Cluster Member node is created by patterns when it detects a host in a cluster configuration during the discovery scan. A relationship link is automatically created to the Cluster Service node to identify the services running on the cluster resource. The generated key for a Cluster Resource node is entirely dependent on the kind of Cluster. 

Update

The update procedure for a Cluster Resource node is also fully owned and controlled by patterns. When the pattern identifies a cluster resource, it calculates a key. If a Cluster Resource node with that key already exists, the node is updated accordingly.

Remove

You can remove a Cluster Resource node manually or automatically. The Cluster Resource node is removed automatically when the Cluster Member node is removed through a cascade removal. Alternatively, the Cluster Resource node is removed by the pattern if the Cluster Member is physically or logically removed from the configuration. For more information about cascade removal, see Cascade Removal.

To manually remove a Cluster Resource node:

  1. Search for the necessary Cluster Member.
  2. List the resources for the selected Cluster Member node.
  3. Select the Cluster Resource from the list
  4. Pick Destroy from the Actions list. 

Attributes and relationships of the ClusterResource node

The attributes of the ClusterResource node are described in the following table:

UI Name
Attribute Name and Type

Description

Name
name : string

Name of resource

Description
description : string

Description of resource

Type
type : string

Type of resource

Instance
instance : string

Instance of resource

Command Line
cmd_line : string

Command line of resource

Service Name
service_name : string

Service name of resource

Startup Parameters
startup_params : string

Startup parameters of resource

The relationships of the ClusterResource node are described in the following table:

UI Name

Relationship

Description

Cluster Service

Contained:
 Containment:
 Container:
 ClusterService

Containing Cluster Service

 

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