Page 439 - Cloud computing: From paradigm to operation

Cloud Computing management 2

8.1.3 Service management layer

The service management layer focuses on the knowledge of cloud services and includes all functionalities
necessary for the management and operations of cloud services required by or proposed to customers. The
focus is on cloud service delivery and management as opposed to the management of the underlying
resources.
This layer is accountable for cloud service delivery such as service instance management, and cloud service
operation such as service monitoring and problem handling and the assurance of the service quality.
For details of the functionalities present in the service management layer, see clause 10.3.

8.1.4 Resource management layer
The resource management layer is responsible for maintaining knowledge of resources (application,
computing and network infrastructures) and for managing all these resources (e.g., networks, IT systems,
servers, routers) utilized to deliver and support cloud services required by or proposed to customers.
For details of the functionalities present in the resource management layer, see clause 10.4.

8.2 Service management interface

The SMI-based approach provides a means to allow consistent E2E management of cloud computing services
exposed by, and across, different domains of CSPs thus unifying the traditional telecommunication
environment and the cloud computing environment.

The SMI capabilities include the following:
− activation of a cloud service, i.e., making a cloud service available for a particular context (deploying
a cloud service instance);
− provisioning of a cloud service, i.e., configuring the settings of a cloud service instance;
− status monitoring of a cloud service instance, i.e., querying the history and current status in terms
of lifecycle management for a specific cloud service instance;
− usage monitoring of a cloud service instance, i.e., querying for usage metrics from a cloud service
instance or listening for usage metrics reports or alarms (e.g., if metrics conditions imply
notifications);
− health monitoring of a cloud service instance, i.e., querying for health metrics from a cloud service
instance;
− update of a cloud service instance, i.e., modification of the setting or lifecycle management status
of a cloud service instance;
− de-activation of a cloud service, i.e., making a cloud service unavailable.
A further description of how the SMI-based model can be used across various cloud computing reference
architecture layers can be found in Annex A.

8.3 Relationship with the cloud computing reference architecture

Figure 8-2 illustrates the relationship between the management layers described in clause 8.1 and the BSS
and OSS components of the cloud computing reference architecture as defined in [ITU-T Y.3502].

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