App profiles for Kubernetes clusters

Proposers

• Gerardo García (Telefónica)
• Francisco Javier Ramón (Telefónica)
• Jayaprakash G (Tata Elxsi)
• Utkarsh Mishra (Tata Elxsi)
• Deepika E (Tata Elxsi)
• Sandhya J. S (Tata Elxsi)
• Priyadharshini S (Tata Elxsi)
• Shahithya Y (Tata Elxsi)
• Shrinithi R (Tata Elxsi)
• Ramesh Ramanathan (Tata Elxsi)

Reference

This feature is related to the long-term initiative presented in previous meetings:

• https://docbox.etsi.org/OSG/OSM/05-CONTRIBUTIONS/2023//OSM(23)000105_Telef_nica_s_Initiative_for_OSM_LTV.pptx
• https://docbox.etsi.org/OSG/OSM/05-CONTRIBUTIONS/2023//OSM(23)000081_Telef_nica_s_Initiative_proposal_for_Long_Term_View.pptx

The main purpose of the initiative is to use well known CRDs for new southbound operations (K8s clusters, PaaS/IaaS components, serverless workflows, Cluster API), relying on existing open source solutions such as Crossplane, FluxCD, ArgoCD, etc. These south-bound operations will be properly modeled and abstracted by OSM, which will provide a convenient user-facing modelling, in order to offer new use cases such as a complete cluster management from OSM and the support of PaaS-based deployment units.

Description

This feature proposes the creation of a new first class citizen in OSM named App Profiles to model sets of CNFs deployable over Kubernetes. App Profiles allow re-usability of CNFs in multiple Kubernetes clusters, enabling organizations to manage cluster profiles for different needs, e.g. profile for policy-based applications, profile for distributed RAN deployments, profile for centralized 5G core deployments, etc.

As first class citizens in OSM, CRUD operations (Create, Read, Update, Delete) could be done on them. As a general rule, in principle deletion shouldn't be allowed if other first class citizens are using them.

Demo or definition of done

A new Robot test will be created or updated to test the CRUD operations over App Profiles using the osmclient.