Problem aiming to solve

Experimental proposal for describing a VNF that is based on  osContainers.  

Changes

New Classes/Types:

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

   1. 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 mciopProfile which describes provides properties of the MCIOP which are used during deployment of containerized workloads based on a MCIOP, associated to a VNF deployment flavour.   A Managed Container Infrastructure Object Package (MCIOP) is a hierarchical aggregate of information objects for OS container management and orchestration. Multiple MCIOPs can be included in a VNF Package.

   1. 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.

Other changes:

1. New property vnfd::osContainerDesc of type osContainerDesc with cardinality 0..N which defines descriptors of container compute resources to be used by the VNF when the VDUs of the VNF are realized by a set of OS Containers sharing the same host and same networking namespace.  Only one of virtualComputeDesc or osContanerDesc may be present in the vnfd
2. New property vdu::osContainerDesc of type identifier (Reference to osContainerDesc) with cardinality 0..N which describes CPU, memory requirements and limits, and software images of the OS Containers realizing this Vdu corresponding to OS Containers sharing the same host and same network namespace. Each unique identifier is referenced only once within one VDU.
3. Modification of VduCpd::vnictype to include several new types (BRIDGE, IPVLAN, LOOPBACK, MACVLAN, PTP, VLAN, HOST-DEVICE)
4. Modification to the cardinality of SwImageDesc::diskFormat, SwImageDesc::minDisk to allow cardinality of 0..N
5. New property VndDf::mciopProfile of type mciopProfile with cardinality 0..N which describes additional instantiation data for the MCIOPs used in this deployment flavour. This attribute shall be present if the DF references containerized workloads based on a MCIOP.
6. New property VirtualStorageDesc::volumeTemplate of type Boolean with cardinality 0..1 which indicates whether the virtual storage descriptor shall be used as template, i.e. if the virtual storage resource shall be instantiated per VNFC instance. If the value is true (default), a persistent virtual storage resource shall be instantiated for each VNFC instance that is based on a VDU referring to this virtual storage descriptor. If the value is false, a single persistent virtual storage resource shall be instantiated with a lifetime independent of the lifetime of individual VNFC instances based on a VDU referring to this virtual storage descriptor.
7. Proposed new properties of vipCpd to support "services"

GenDoc Output: