[ceph-users] missing amqp-exchange on bucket-notification with AMQP endpoint

Hello List, I'm trying to create a (S3-)bucket-notification into RabbitMQ via AMQP - on Ceph v15.2.1 octopus, using the official .deb packages on Debian Buster. I've created the following topic (directly via S3, not via pubsub REST API): <ListTopicsResponse xmlns="https://sns.amazonaws.com/doc/2010-03-31/">     <ListTopicsResult>         <Topics>             <member>                 <User>testuser</User>                 <Name>testtopic</Name>                 <EndPoint>                     <EndpointAddress>amqp://rabbitmquser:rabbitmqpass@rabbitmq.example.com:5672</EndpointAddress>                     <EndpointArgs>Attributes.entry.1.key=amqp-exchange&amp;Attributes.entry.1.value=amqp.direct&amp;push-endpoint=amqp://rabbitmquser:rabbitmqpass@rabbitmq.example.com:5672</EndpointArgs>                     <EndpointTopic>testtopic</EndpointTopic>                 </EndPoint>                 <TopicArn>arn:aws:sns:de::testtopic</TopicArn>                 <OpaqueData></OpaqueData>             </member>         </Topics>     </ListTopicsResult> ... </ListTopicsResponse> Then I've created the following bucket-notification <NotificationConfiguration>     <TopicConfiguration>         <Id>notify-psapp</Id>         <Topic>arn:aws:sns:de::testtopic</Topic>         <Event>s3:ObjectCreated:*</Event>         <Event>s3:ObjectRemoved:*</Event>     </TopicConfiguration> </NotificationConfiguration> When I upload a file into the bucket, the event itself seems to get fired, but radosgw keeps tell me that cmqp-exchange is not set 2020-04-20T12:24:29.935+0200 7ff01c5d3700  1 ====== starting new request req=0x7ff01c5cad50 ===== 2020-04-20T12:24:30.019+0200 7ff01c5d3700  1 ERROR: failed to create push endpoint: amqp://rabbitmquser:rabbitmqpass@rabbitmq.example.com:5672 due to: pubsub endpoint configuration error: AMQP: missing amqp-exchange But it's there in the EndpointArgs, right? Or do I miss it somewhere else? Best Regards, Andreas