OVNDB

OVNDB (Open Virtual Network Database) is a specialized database system designed to support virtual networking environments, primarily within cloud infrastructure and network virtualization platforms. It serves as a centralized repository for network configuration data, including details about logical switches, ports, routers, and policies, enabling dynamic and scalable network management.

OVNDB is a core component of the Open Virtual Network (OVN) project, an open-source initiative that extends the capabilities of the Open vSwitch (OVS) with advanced networking features. It is built to facilitate the automation of network provisioning, management, and reconciliation in complex virtualized environments. OVNDB generally operates in a distributed manner, with multiple database instances synchronized using consensus protocols to ensure consistency and reliability.

Designed to support both northbound APIs (for control plane configuration) and southbound APIs (for data plane implementation), OVNDB integrates seamlessly with orchestration tools like OpenStack and Kubernetes. This integration allows for automated network configuration aligned with application deployment and scaling needs.

OVNDB can utilize various database backends, with PostgreSQL being the most common, offering robustness and scalability. Its schema supports a wide array of network constructs, making it adaptable to diverse networking requirements. Security features such as role-based access control and encryption are integral, ensuring data confidentiality and integrity within multi-tenant environments.

Overall, OVNDB plays a critical role in modern virtual networking by providing a flexible, programmable, and consistent data layer that enables efficient management and orchestration of virtual network resources in cloud data centers.