Relationship between Kubernetes and O-RAN

COSCUP 2024

Transcript

1. Relationship between Kubernetes and O-RAN Yi Hong Lin (uccu) 2024/8/4 COSCUP 2024 1
2. About Me • Master ’s student from NYCU • • 2023 COSCUP DevOps Hackathon • 2023 COSCUP Docker Kubernetes • • 2021 iThome DevOps • DevOps Study Lab • 2022 iThome DevOps • Kubernetes Istio DevOps Telegram: uccu @justin89721 2
3. • • • Microservices • Cloud Native • DevOps • • • • (Multi-vendors) • (NFV) ??? 3
4. RAN Network Transport Network Core Network Internet User Equipment (UE) 5G Network 4
5. • • • • gNB O-RU O-DU O-CU • O-CU O-CU-CP O-CU-UP • (NFV) • 5G (gNB) O-RU O-DU O-CU RF PHY-Low PHY-High MAC RLC PDCP RRC/SDAP 5
6. DevOps Container Infrastructure as Code (IaC) Common Hardware Network Functions (NFs) Server NIC 5G (gNB) O-RU O-DU O-CU O-RAN: 6
7. O-RAN Architecture SMO (Service Management and Orchestration) • O1 NFs FCAPS ( ) • O2 O-Cloud O-Cloud • O-RAN NFs • Infrastructure Management Services (IMS) • O-RAN Infrastructures • Deployment Management Services (DMS) • O-RAN NFs Ref: O-RAN.WG1.OAD-R003-v12.00 7
8. Kubernetes O-RAN • -RAN NFs (Ex: O-CU, O-DU) Kubernetes • O-Cloud • IMS Kubernetes O-RAN NFs • DMS Kubernetes O-RAN NFs ClusterA DMS ClusterB DMS O-Cloud Service Management and Orchestration (SMO) NFs NFs IMS O2ims O2dms O2dms O1 O1 8
10. What is Nephio • Linux Foundation • • Kubernetes • Kubernetes Operator • GitOps Git 10
11. Kubernetes Operator • Kubernetes API • Custom Resource (CR) • Controller CR (Ex: ) IT Apply CR Controller Application Reconciliation Loop Current State Desired State 11
12. Operator • Cluster-api (github.com/kubernetes-sigs/cluster-api) • GPU-operator (github.com/NVIDIA/gpu-operator) • Crossplane (github.com/crossplane/crossplane) Crossplane Cluster-api GPU-operator 12
13. Nephio Architecture • Kubernetes based Telcom Domain Automation • K8s Operator • Infrastructure • Network Functions (NFs) • NFs Configuration Ref: https://nephio.org/about 13
14. Application Layer 5G ( ) NIC VM Infra Layer Config Layer Kubernetes NF Configurations System Layer 5G NF Pods IT 1. VM 2. Kubernetes Cluster 3. NFs Kubernetes 4. API Configurations 14
15. Mgmt Cluster 5G (Nephio) Config Layer NF Configurations NIC VM Infra Layer Kubernetes System Layer Application Layer NF Pods 1. Mgmt K8s Cluster IT Infra Operator Reconciliation 2. Operator K8s Operator Reconciliation NF Deploy Operator Reconciliation NF Config Operator Reconciliation 3. CR Infra CR K8s CR NF Deploy CR NF Config CR 5G Workload Clusters 15
16. Operator Kubernetes Operator as Everything 16
17. What is GitOps • DevOps • Git Infrastructure Application Developer IT Push Push Trigger Argo CD App Repo Update Manifest Repo Kubernetes Sync Deploy CI 17
18. • Porch (Package Orchestration) Git K8s Package • PackageVariant Blueprint Push Workload K8s Repo • Config Sync Git Repo K8s • K8s Git GitOps Implementation with Nephio Mgmt Cluster Workload ClusterA ClusterB Repo ClusterA Repo Porch Operators Config Sync Operators Workload ClusterB Config Sync Operators Blueprint Repo IT PackageVariant CR CRs 18
19. Nephio-O-RAN Architecture • Nephio SMO O-Cloud • Infra Operator IMS NF Deployment Operator DMS Ref: O-RAN.WG6.CADS-v06.00 Mgmt Cluster (SMO) SMO O-Cloud Workload Clusters Mgmt Cluster Operators (SMO) Porch Workload Repo Infra Repo Config Sync Operators (IMS) IMS: Infrastructure Management Services DMS: Deployment Management Services NFs: Network Functions Config Sync Operators (DMS) NFs 19
20. IT Text: I want .. Apply Workloads CRs GPT Render Infrastructures AI Chatbot • GenAI Telco Network Automation Configurations 5G Network 20
21. Conclusion • O-RAN gNB NFV • Nephio • Kubernetes Operator • GitOps • How to learn Nephio • • Tutorial (https://github.com/nephio- project/docs/tree/main/content/en/docs/guides/user-guides) 21
22. Q&A 22