将Apache Airflow的凭证存储在Openmetadata中的解决方法是，在Openmetadata中创建一个名为“airflow”的集合，并使用Airflow的连接（connection）名称作为实例的名称。使用以下代码存储凭证：

from metadata.ingestion.models.userprofile import UserProfile
from metadata.ingestion.ometa.openmetadata_rest import MetadataServerConfig
from metadata.ingestion.ometa.openmetadata_shim import OpenMetadata
from metadata.ingestion.source.sql.sql_source import SQLSourceConfig
from metadata.ingestion.source.sql.sql_metadata_extractor import SQLMetadataExtractor
from metadata.ingestion.api.common import ConfigModel

class AirflowMetadataExtractor(SQLMetadataExtractor):
    def __init__(self, config: SQLSourceConfig, metadata_config: MetadataServerConfig,
                 output_path: str, emitter=None, transformation_ctx=None):
        super().__init__(config, metadata_config, output_path, emitter=emitter, transformation_ctx=transformation_ctx)

    def get_metadata(self):
        metadata = super().get_metadata()
        credentials = self.config.credentials
        if credentials and isinstance(credentials, ConfigModel):
            airflow_credentials = credentials.dict(exclude_unset=True)
            airflow_connection = airflow_credentials.get("connection")
            if airflow_connection:
                instance = self.ometa.create_instance("airflow", airflow_connection)
                instance.properties = {"username": airflow_credentials.get("username"),
                                        "password": airflow_credentials.get("password")}
                self.ometa.emit_instance(instance, sync=True)
        return metadata

这将创建一个名为“airflow”的集合，并使用Airflow的连接名称作为实例的名称，然后将凭据存储在此实例的属性中。