As it is mentioned in the documentation you need to configure your Azure Event Hubs instance as the target to which OpenLineage sends the events.Create an ‘openlineage.yml’ file under your Airflow root path. The content of the file is as below:
transport:
type: "kafka"
config:
bootstrap.servers: "{EVENTHUB_SERVER}:9093"
security.protocol: "SASL_SSL"
sasl.mechanism: "PLAIN"
sasl.username: "$ConnectionString"
sasl.password: "{PASSWORD}"
client.id: "airflow-client"
topic: "microsoft_internal_openlineage"
flash: True