7.2. VNF On-boarding and package management¶
7.2.1. Design Definition¶
The ONAP Design Time Framework provides the ability to design NFV resources including VNFs, Services, and products. The VNF provider must provide VNF packages that include a rich set of recipes, management and functional interfaces, policies, configuration parameters, and infrastructure requirements that can be utilized by the ONAP Design module to onboard and catalog these resources. Initially this information may be provided in documents, but in the near future a method will be developed to automate as much of the transfer of data as possible to satisfy its long term requirements.
The current VNF Package Requirement is based on a subset of the Requirements contained in the ETSI Document: ETSI GS NFV-MAN 001 v1.1.1 and GS NFV IFA011 V0.3.0 (2015-10) - Network Functions Virtualization (NFV), Management and Orchestration, VNF Packaging Specification.
7.2.2. Resource Description¶
The xNF provider MUST include a Manifest File that contains a list of all the components in the xNF package.
The xNF Package MUST include xNF Identification Data to uniquely identify the resource for a given xNF provider. The identification data must include: an identifier for the xNF, the name of the xNF as was given by the xNF provider, xNF description, xNF provider, and version.
The xNF Package MUST include documentation describing xNF Management APIs, which must include information and tools for ONAP to deploy and configure (initially and ongoing) the xNF application(s) (e.g., NETCONF APIs) which includes a description of configurable parameters for the xNF and whether the parameters can be configured after xNF instantiation.
The xNF Package MUST include documentation describing xNF Management APIs, which must include information and tools for ONAP to monitor the health of the xNF (conditions that require healing and/or scaling responses).
The xNF Package MUST include documentation which includes a description of parameters that can be monitored for the xNF and event records (status, fault, flow, session, call, control plane, etc.) generated by the xNF after instantiation.
The xNF Package MUST include documentation which includes a description of runtime lifecycle events and related actions (e.g., control responses, tests) which can be performed for the xNF.
The xNF Package MUST include documentation describing xNF Functional APIs that are utilized to build network and application services. This document describes the externally exposed functional inputs and outputs for the xNF, including interface format and protocols supported.
The xNF provider MUST provide documentation describing xNF Functional Capabilities that are utilized to operationalize the xNF and compose complex services.
The xNF provider MUST provide information regarding any dependency (e.g., affinity, anti-affinity) with other xNFs and resources.
The VNF package MUST provide VES Event Registration for all VES events provided by that xNF.
The VNF documentation MUST contain a list of the files within the VNF package that are static during the VNF’s runtime.
7.2.3. Resource Configuration¶
The xNF MUST support and provide artifacts for configuration management using at least one of the following technologies; a) Netconf/YANG, b) Chef, or c) Ansible.
Note: The requirements for Netconf/YANG, Chef, and Ansible protocols are provided separately and must be supported only if the corresponding protocol option is provided by the xNF providor.
22.214.171.124. Configuration Management via NETCONF/YANG¶
The xNF provider MUST provide a Resource/Device YANG model as a foundation for creating the YANG model for configuration. This will include xNF attributes/parameters and valid values/attributes configurable by policy.
126.96.36.199. Configuration Management via Chef¶
The xNF provider MUST provide cookbooks to be loaded on the appropriate Chef Server.
The xNF provider MUST provide a JSON file for each supported action for the xNF. The JSON file must contain key value pairs with all relevant values populated with sample data that illustrates its usage. The fields and their description are defined in Tables A1 and A2 in the Appendix.
Note: Chef support in ONAP is not currently available and planned for 4Q 2017.
188.8.131.52. Configuration Management via Ansible¶
The xNF provider MUST provide playbooks to be loaded on the appropriate Ansible Server.
The xNF provider MUST provide a JSON file for each supported action for the xNF. The JSON file must contain key value pairs with all relevant values populated with sample data that illustrates its usage. The fields and their description are defined in Table B1 in the Appendix.
The xNF Package MUST include configuration scripts for boot sequence and configuration.
The xNF provider MUST provide configurable parameters (if unable to conform to YANG model) including xNF attributes/parameters and valid values, dynamic attributes and cross parameter dependencies (e.g., customer provisioning data).
7.2.4. Resource Control Loop¶
The xNF provider MUST provide documentation for the xNF Policy Description to manage the xNF runtime lifecycle. The document must include a description of how the policies (conditions and actions) are implemented in the xNF.
The xNF Package MUST include documentation describing the fault, performance, capacity events/alarms and other event records that are made available by the xNF.
The xNF Package MUST include documentation which must include a unique identification string for the specific xNF, a description of the problem that caused the error, and steps or procedures to perform Root Cause Analysis and resolve the issue.
The xNF Package MUST include documentation which must include all events, severity level (e.g., informational, warning, error) and descriptions including causes/fixes if applicable for the event.
The xNF Package MUST include documentation which must include all events (fault, measurement for xNF Scaling, Syslogs, State Change and Mobile Flow), that need to be collected at each VM, VNFC (defined in VNF Guidelines ) and for the overall xNF.
The xNF provider MUST provide an XML file that contains a list of xNF error codes, descriptions of the error, and possible causes/corrective action.
The xNF Package MUST include documentation describing all parameters that are available to monitor the xNF after instantiation (includes all counters, OIDs, PM data, KPIs, etc.) that must be collected for reporting purposes.
The xNF Package MUST include documentation about monitoring parameters/counters exposed for virtual resource management and xNF application management.
The xNF Package MUST include documentation about KPIs and metrics that need to be collected at each VM for capacity planning and performance management purposes.
The xNF Package MUST include documentation about the monitoring parameters that must include latencies, success rates, retry rates, load and quality (e.g., DPM) for the key transactions/functions supported by the xNF and those that must be exercised by the xNF in order to perform its function.
The xNF Package MUST include documentation for each KPI, provide lower and upper limits.
The xNF Package MUST include documentation to, when relevant, provide a threshold crossing alert point for each KPI and describe the significance of the threshold crossing.
The xNF Package MUST include documentation for each KPI, identify the suggested actions that need to be performed when a threshold crossing alert event is recorded.
The xNF Package MUST include documentation that describes any requirements for the monitoring component of tools for Network Cloud automation and management to provide these records to components of the xNF.
The xNF Package MUST include documentation to when applicable, provide calculators needed to convert raw data into appropriate reporting artifacts.
The xNF Package MUST include documentation describing supported xNF scaling capabilities and capacity limits (e.g., number of users, bandwidth, throughput, concurrent calls).
The xNF Package MUST include documentation describing the characteristics for the xNF reliability and high availability.
The xNF provider MUST provide an artifact per xNF that contains all of the xNF Event Records supported. The artifact should include reference to the specific release of the xNF Event Stream Common Event Data Model document it is based on. (e.g., VES Event Listener)
7.2.5. Compute, Network, and Storage Requirements¶
The xNF Package MUST include xNF topology that describes basic network and application connectivity internal and external to the xNF including Link type, KPIs, Bandwidth, latency, jitter, QoS (if applicable) for each interface.
The VNF Package MUST include VM requirements via a Heat template that provides the necessary data for VM specifications for all VNF components - for hypervisor, CPU, memory, storage.
The VNF Package MUST include VM requirements via a Heat template that provides the necessary data for network connections, interface connections, internal and external to VNF.
The VNF Package MUST include VM requirements via a Heat template that provides the necessary data for high availability redundancy model.
The VNF Package MUST include VM requirements via a Heat template that provides the necessary data for scaling/growth VM specifications.
Note: Must comply with the Heat requirements in 5.b.
The xNF provider MUST provide the binaries and images needed to instantiate the xNF (xNF and VNFC images).
The xNF provider MUST describe scaling capabilities to manage scaling characteristics of the xNF.
The xNF Package MUST include documentation describing the tests that were conducted by the xNF provider and the test results.
The xNF provider MUST provide their testing scripts to support testing.
The xNF provider MUST provide software components that can be packaged with/near the xNF, if needed, to simulate any functions or systems that connect to the xNF system under test. This component is necessary only if the existing testing environment does not have the necessary simulators.
7.2.7. Licensing Requirements¶
The xNF MUST provide metrics (e.g., number of sessions, number of subscribers, number of seats, etc.) to ONAP for tracking every license.
The xNF provider MUST agree to the process that can be met by Service Provider reporting infrastructure. The Contract shall define the reporting process and the available reporting tools.
The xNF provider MUST enumerate all of the open source licenses their xNF(s) incorporate.
The xNF provider MUST NOT require audits of Service Provider’s business.
The xNF provider MUST NOT require additional infrastructure such as a xNF provider license server for xNF provider functions and metrics.
The VNF MUST provide clear measurements for licensing purposes to allow automated scale up/down by the management system.
The VNF provider MUST provide the ability to scale up a VNF provider supplied product during growth and scale down a VNF provider supplied product during decline without “real-time” restrictions based upon VNF provider permissions.
The xNF provider MUST provide a universal license key per xNF to be used as needed by services (i.e., not tied to a VM instance) as the recommended solution. The xNF provider may provide pools of Unique xNF License Keys, where there is a unique key for each xNF instance as an alternate solution. Licensing issues should be resolved without interrupting in-service xNFs.
The xNF provider MUST support the metadata about licenses (and their applicable entitlements) as defined in this document for xNF software, and any license keys required to authorize use of the xNF software. This metadata will be used to facilitate onboarding the xNF into the ONAP environment and automating processes for putting the licenses into use and managing the full lifecycle of the licenses. The details of this license model are described in Tables C1 to C8 in the Appendix.
Note: License metadata support in ONAP is not currently available and planned for 1Q 2018.