Ceph » rgw

I have ceph three-nodes cluster for tests with radosgw on first node.
ceph version 14.2.6 (f0aa067ac7a02ee46ea48aa26c6e298b5ea272e9) nautilus (stable)

# cat /etc/ceph/ceph.conf
[global]
fsid = a204e3b5-b0e1-4598-aadc-f46011b562f0

mon_initial_members = ceph-test-01, ceph-test-02, ceph-test-03
mon_host = 172.19.19.252,172.19.19.251,172.19.19.244

auth_cluster_required = cephx
auth_service_required = cephx
auth_client_required = cephx

public network = 172.19.19.0/24

rgw_frontends = beast port=80

And Kafka broker for receiving messages.

I've create topic by docs (https://docs.ceph.com/docs/master/radosgw/notifications/).

POST http://ceph-test-01/?Action=CreateTopic&Name=bucketnotifications&push-endpoint=kafka://kafka-test-01:9092 with S3 credentials
Response:
<CreateTopicResponse xmlns="https://sns.amazonaws.com/doc/2010-03-31/">
    <CreateTopicResult>
        <TopicArn>arn:aws:sns:us::bucketnotifications</TopicArn>
    </CreateTopicResult>
    <ResponseMetadata>
        <RequestId>14804357-9c29-437d-9789-c127e1c13d23.44108.275</RequestId>
    </ResponseMetadata>
</CreateTopicResponse>

I've created bucket "new-bucket" and checked its configuration

GET http://ceph-test-01/new-bucket?notification
Response:
<NotificationConfiguration>
    <TopicConfiguration>
        <Id>bucketnotifications</Id>
        <Topic>arn:aws:sns:us::bucketnotifications</Topic>
        <Event>s3:ObjectCreated:*</Event>
        <Event>s3:ObjectRemoved:*</Event>
    </TopicConfiguration>
</NotificationConfiguration>

When I add files to bucket or remove them, ceph do not push notifications to Kafka. Radosgw logs(in debug mode) contains next strings:

2020-03-04 10:58:00.533 7f29a8da3700 20 notification: 'bucketnotifications' on topic: 'bucketnotifications' and bucket: 'new-bucket' (unique topic: 'bucketnotifications') apply to event of type: 's3:ObjectCreated:Put'
2020-03-04 10:58:00.533 7f29a8da3700  1 ERROR: failed to create push endpoint: kafka://kafka-test-01:9092 due to: pubsub endpoint configuration error: unknown schema in: kafka://kafka-test-01:9092
2020-03-04 10:58:00.533 7f29a8da3700  5 req 188 0.248s s3:put_obj WARNING: publishing notification failed, with error: -22

Kafka has no new topics.