Background

The Edge Multi Cloud Orchestrator (EMCO) - also previously known as ONAP4K8S version 2 - is an application orchestrator designed to deploy geo-distributed appliations across multiple edge/cloust kubernetes clusters.

See the following articles for background on the requirements and architectural principles:

• Geo-Distributed Application/Network-Service Requirements:  https://www.linkedin.com/pulse/geo-distributed-application-orchestration-across-k8s-addepalli
• Guidelines we followed:  https://www.linkedin.com/pulse/central-orchestrator-onap4k8s-generic-design-srinivasa-addepalli
• Architecture of ONAP4K8s(EMCO):  https://www.linkedin.com/pulse/onap4k8s-architecture-srinivasa-addepalli
• How does it compare to other Industry solutions:  https://www.linkedin.com/pulse/multi-cluster-application-orchestration-industry-value-addepalli

Architecture Overview

The following diagram depicts a high level overview of the EMCO architecture.

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• Cluster Registration Controller registers clusters by cluster owners
• Network Configuration Management handles creation/management of virtual and provider networks
• Distributed Application Scheduler provides simplified, and extensible placement
• Hardware Platform Aware Controller enables scheduling with auto-discovery of platform features/ capabilities
• Distributed Cloud Manager presents a single logical cloud from multiple edges
• Secure Mesh Controller auto-configures both service mesh (ISTIO) and security policy (NAT, firewall)
• Secure WAN Controller automates secure overlays across edge groups
• Resource Syncronizer manages instantiation of resources to clusters
• Monitoring covers distributed application

Distributed Application Scheduler

Resource Synchronizer

Cluster Registration Controller

Network Configuration Management

Distributed Cloud Management

Monitoring

Placement Controllers

Action Controllers

Installation

Operation