Microservices based VNF
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This slide deck was presented in OpenNetworkingSummit 2017. The theme is building microservices based VNF using Opensource tools and ecosystem. This also covers Design patterns that are relevant to the VNF context. Overview of COE project in Opendaylight and deployment scenarios it addresses.
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Microservices based VNF
- 1. Open source Approach to Design and Deployment of Microservices based VNF Prem Sankar G, Ericsson http://twitter.com/premsankar
- 2. • Microservices – Intro, design patterns • ETSI NFV Architecture • VNF Characteristics • Opensource Ecosystem • Container Orchestration Engine Integration Agenda
- 3. What is Microservices? • Reference – Martin Fowler, http://martinfowler.com
- 4. Principles that drive Microservices architecture • Services must be loosely coupled so that they can be developed, deployed and scaled independently • Organized around business capabilities • API Focused • Smart endpoints and dumb pipes • Decentralized Governance • Decentralized Data Management • Infrastructure Automation (infrastructure as code) • Design for failure • Evolutionary Design
- 5. Network Functions - Flavors PNF VNF Hypervisor Microservices VNF Hardware µs µs µs µs µs µs µs runtime engine
- 6. • Reference – Chris Richardson http://microservices.io/patterns/microservic es.html Microservices Design Patterns
- 7. • Decomposition Pattern • Business Capability/Subdomain context • Service discovery Pattern • API Gateway Pattern • Database per service Pattern • Keep each microservice’s persistent data private to that service and accessible only via its API • RDBMS design approaches • Private-tables-per-service – each service owns a set of tables that must only be accessed by that service • Schema-per-service – each service has a database schema that’s private to that service • Database-server-per-service – each service has it’s own database server. • Circuit Breaker Microservices Design Patterns for VNF
- 8. • Elasticity • Fault Tolerance • Agility/ • API-based/End points • Infra and Location agnostic • Central Orchestration • Predictability • Business needs • 5G, IOT Key drivers for VNF
- 11. • Workflow Manager and Orchestrator • ONAP/TOSCA • Design and Deployment • CI/CD Pipelines • Jenkins • Fabric8 (Jenkins, Kubernetes and Docker) • Other options – goCD, concourse.ci • Ansible/Puppet/Chef • Execution/NFVi • Kubernetes with ODL, OPNFV • Monitoring • Prometheus and other alternatives (https://prometheus.io/docs/introduction/comparison/) • Tracing • Zipkin • Logging • ELK stack Opensource Ecosystem
- 12. Host OS Open vSwitch Host OS Open vSwitch Container Orchestration Engine - OpenDaylight VM Container App Container App Container App VLAN’s Orchestrator OpenDaylight Kubernetes / Docker Kuryr Neutron / Gluon Container App Container App Container App Container Mgt (docker, kube-pxy) Iptables / NAT/FW Integrated Native • Reference – ODL COE project, http://wiki.opendaylight.org/view/COE:Main
- 13. Deployment Neutron Plugin or Gluon/Proton Linux Linux Linux Linux Kubernetes Datacenter Hardware Linux OpenStack OVS App OrchestrationSystems OpenStack APIs OpenDaylight Kubernetes APIs CNI Plugin KVM KVM ContainerRT Container RT App App App VM Application Container Application AppApp App VNF - Mixed deployment
- 14. Any organization that designs a system (defined broadly) will produce a design whose structure is a copy of the organization's communication structure. -- Melvyn Conway, 1967