3.3.1 changes bring support for VNF Package Change and VNF Snapshot

4.1.1 changes bring support for OsContainer based VNFs

Problem aiming to solve

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Changes from v3.3.1

New Classes/Types:

• New Class VnfPackageChangeInfo: A VnfPackageChangeInfo information element describes the processes and rules to be used for performing the resource related tasks while assisting the "change current VNF Package" to change a VNF instance to a different VNF Package (destination package).When creating a VNF package, the VNF vendor can include VnfPackageChangeInfo information elements in the package which allow the package to act as a source package or as a destination package for a modification in relation to another package, which has been created earlier or at the same time. To populate a VnfPackageChangeInfo information element and the underlying related information elements, knowledge of both the source package and the destination package is required.

• New Class VersionSelector: The VersionSelector information element allows to identify the source and destination VNFDs (and implicitly, VNF packages) for a "change current VNF Package", as well as the applicable source deployment flavour. The triplet (srcVnfdId, srcFlavourId, dstVnfdId) uniquely determines a change.

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• New Property Vnfd:vnfpackagechangeinfo of type VnfPackageChangeInfo with cardinality 0..N - Information used for performing the change of the current VNF Package. More than one VNF Package Change Info construct is possible to cater the possibility that changes of the current VNF Package can be performed for different source VNFDs.
• New Property Vnfd:lcmOperationCoordination of type VnfLcmOperationCoordination with cardinality 0..N - Provides information used for the coordination in VNF LCM operations.

VNFD Types: 

Image Added

Image Added

Image Added

Changes from v4.1.1

New Classes/Types:

1. New type Class OsContainerDesc which describes the member properties of a set of co-located container compute resources when these are realizing a VDU

   1. The osContainerDesc  element(s) are listed in the VNF Descriptor and referenced by the VDU element(s).  Each VDU may be made up of group of containers, often called a "pod".

      Attribute	Qualifier	Cardinality	Content	Description
      osContainerDescId	M	1	Identifier	Unique identifier of this OsContainerDesc in the VNFD.
      requestedCpuResources	M	0..1	Integer	Number of CPU resources requested for the container (e.g. in milli-CPU-s)
      requestedMemoryResources	M	0..1	Number	Amount of memory resources requested for the container (e.g. in MB).
      requestedEphemeralStorageResources	M	0..1	Number	Size of ephemeral storage resources requested for the container (e.g. in GB).
      extendedResourceRequests	M	0..N	Not specified	An array of key-value pairs of extended resources required by the container. See note.
      cpuResourceLimit	M	0..1	Integer	Number of CPU resources the container can maximally use (e.g. in milli-CPU).
      memoryResourceLimit	M	0..1	Number	Amount of memory resources the container can maximum use (e.g. in MB).
      ephemeralStorageResourceLimit	M	0..1	Number	Size of ephemeral storage resources the container can maximum use (e.g. in GB).
      swImageDesc	M	1	Identifier (Reference to SwImageDesc)	Describes the software image realizing this OS container.
      bootData	M	0..1	Not specified	Contains a string or a URL to a file contained in the VNF package used to customize a container resource at boot time. The bootData may contain variable parts that are replaced by deployment specific values before being sent.
      virtualStorageDesc	M	0..N	Identifier (Reference to VirtualStorageDesc)	Links to virtualStorageDesc-s of the Vdu. The storages represented by the linked VirtualStorageDesc-s are attached to the OS Container as volumes. Shall be present in case the OS container requires storage resources.
      monitoringParameters	M	0..N	MonitoringParameter	Specifies the virtualised resource related performance metrics on the OsContainerDesc level to be tracked by the VNFM. MonitoringParameter is defined in clause 7.1.11.3.
      NOTE:     Extended resources are to describe any type of resource provided by the container infrastructure. One example implementation of extended resources are “Extended Resources” in case the container infrastructure service is a Kubernetes® instance.

      
      

2. New type Class MciopProfile which describes properties of the Managed Container Infrastructure Object Package (MCIOP) which are used during deployment of containerized workloads based on a MCIOP, associated to a VNF deployment flavour.   An MCIOP is a hierarchical aggregate of information objects for OS container management and orchestration. Multiple MCIOPs can be included in a VNF Package.  The MCIOP is expected to be realized by a Helm chart.

   1. Each VnfDf in the VNF Descriptor would list the appropriate mciopProfiles.

      Attribute	Qualifier	Cardinality	Content	Description
      mciopId	M	1	Identifier	Identifies the MCIOP in the VNF package.
      deploymentOrder	M	0..1	Integer	Indicates the order in which this MCIOP shall be deployed in relation to other MCIOPs. A lower value specifies an earlier deployment.
      affinityOrAntiAffinityGroupId	M	0..N	Identifier (Reference to AffinityOrAntiAffinityGroup)	References the affinity or anti-affinity group(s) the MCIOP belongs to. See note.
      associatedVdu	M	0..N	Identifier (Reference to Vdu)	List of VDUs which are associated to this MCIOP and which are deployed using this MCIOP.
      NOTE: Each identifier references an affinity or anti-affinity group which expresses affinity or anti-affinity relationships between the containerized workloads to be created using this MCIOP and the containerized workloads to be created using other MCIOP(s) in the same group.

      
      

3. New types VirtualCpd, AdditionalServiceData, Class  VirtualCpd.  New datatypes AdditionalServiceData and ServicePortData 

   1. VirtualCpd - A type of Cpd that describes a requirement to create a virtual connection point allowing the access to a number of VNFC instances (based on their respective VDUs).

      Attribute	Qualifier	Cardinality	Content	Description
      vdu	M	1..N	Identifier (Reference to Vdu)	References the VDU(s) which implement this service.
      additionalServiceData	M	0..N	AdditionalServiceData	Additional service identification data of the VirtualCp exposed to NFV-MANO.
      (inherited attributes)				All attributes inherited from Cpd. See note.
      NOTE: If this VirtualCp represents a load balancing virtual IP address of a VNFC realized by one or a set of OS containers and the IP address is configurable in the declarative descriptor of the corresponding MCIO, the attribute iPAddressAssignment shall be set to value=true in the L3AddressData.

      
      

   2. AdditionalServiceData

      Attribute	Qualifier	Cardinality	Content	Description
      portData	M	1..N	ServicePortData	Service port numbers exposed by the VirtualCp.
      serviceData	M	0..1	Not specified	Service matching information exposed by the VirtualCp. See note.
      NOTE:     This attribute shall only be present if additional information is needed to identify the service termination within the VNF, such as for example a url path information in an HTTP request required to allow a single VirtualCp IP address to be used for several HTTP based services that use the same portnumber.

      
      

   3. ServicePortData

      Attribute	Qualifier	Cardinality	Content	Description
      name	M	1	String	The name of the port exposed by the VirtualCp.
      protocol	M	1	Enum	The L4 protocol for this port exposed by the VirtualCp. VALUES: ·       TCP ·       UDP ·       SCTP
      port	M	1	Integer	The L4 port number exposed by the VirtualCp.
      portConfigurable	M	1	Boolean	Specifies whether the port attribute value is allowed to be configurable.

      
      

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