Cluster Service node
A Cluster Service node represents a service that is managed by a given cluster. This node contains the IP addresses and DNS names, which is used by clients of the service for access purposes. The Cluster Service nodes are fully owned and controlled by BMC Discovery patterns. For detailed information about patterns, see the The-Pattern-Language-TPL and Configipedia.
Cluster Service node lifecycle
The following section describes the scenarios in which a Cluster Service node is created, updated, or removed.
Create
The Cluster Service 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 node that is managing the services. Additionally, relationships are created to the Cluster Resource node that defines and creates the service and to the Software Instance node that implements the service. The generated key for a Cluster Service node is entirely dependent on the kind of Cluster.
Update
The update procedure for a Cluster Service node is also fully owned and managed by patterns. When the pattern has identified a cluster service, it calculates a key. If a Cluster Service node with that key already exists, the node is updated accordingly.
Remove
You can remove a Cluster Service node manually or automatically. The Cluster Service node is removed automatically when the Cluster Member node is removed through a cascade removal. Alternatively, the Cluster Service 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:
- Search for the necessary Cluster Member.
- List the Services for the selected Cluster Member node.
- Select the Cluster Service from the list
- Pick Destroy from the Actions list.
Attributes and relationships of the ClusterService node
The attributes of the ClusterService node are described in the following table:
UI Name | Description |
|---|---|
Name | Name of the service |
Instance ID | Internal Identifier of member |
Type | Type of service |
Description | Description of the service |
Status | Status of the service |
IPv4 addresses | The IPv4 addresses of this service |
IPv6 addresses | The IPv6 addresses of this service |
DNS Names | DNS names for this service |
Failover | Whether the service supports failover between members |
The relationships of the ClusterService node are described in the following table:
UI Name | Relationship | Description |
|---|---|---|
Cluster Resources | Container: Containment: Contained: ClusterResource | Cluster Resources contained in this Cluster Service |
IPv4 Addresses | DeviceWithAddress: DeviceAddress: IPv4Address: IPAddress | IPv4 addresses of this Cluster Service |
IPv6 Addresses | DeviceWithAddress: DeviceAddress: IPv6Address: IPAddress | IPv6 addresses of this Cluster Service |
Cluster | RunningService: HostedService: ServiceHost: Cluster | Cluster that is managing this Cluster Service |
Active Members | RunningService: HostedService: ServiceHost: ClusterMember | Cluster Members that this service is currently running on |
Databases | Service: SoftwareService: ServiceProvider: Database | Databases that make up this service |
Software Instances | Service: SoftwareService: ServiceProvider: SoftwareInstance | Software Instances that make up this service |