Ovsdb-client query example

Open vSwitch includes ,an OVSDB server implementation named ovsdb-server (1), which supports several protocol extensions documented in its manpage, and a basic command-line OVSDB client named ovsdb-client (1), as well as OVSDB client libraries for C and for Python.

Another way to make a backup, which works with all OVSDB service models, is to use ovsdb-client backup, which connects to a running database server and outputs an atomic snapshot of its schema and content, in the same format used for standalone and active-backup databases.

Server-Level Commands Most ovsdb-client commands work with an individual database, but these commands apply to an entire database server. list-dbs [ server ] Connects to server, retrieves the list of known databases, and prints them one per line.
These database names are the ones that other commands may use for database .

An OVSDB client MUST implement the ‘Echo’ method and is otherwise free to implement whichever methods suit the implementation’s needs.” Since all RPC methods are implemented by this library, OVSDB Client Library can validate an OVSDB server implementation.
Schema-independent – The OVSDB Client library does not depend on any specific OVSDB schema.