Problem with rabbitmq when starting service (Linux)

Does anyone knows how to fix this?

error that the service gives when trying to start:

Process terminated. Fatal error detected: RabbitMQ.Client.Exceptions.BrokerUnreachableException: None of the specified endpoints were reachable

RabbitMQ.Client.Exceptions.OperationInterruptedException: The AMQP operation was interrupted: AMQP close-reason, initiated by Library, code=541, text=”Unexpected Exception”, cla…

System.Net.Sockets.SocketException (104): Connection reset by peer

rabbitmq log:

{handshake_error,opening,0, {amqp_error,access_refused, “access to vhost ‘/hostname’ refused for user ‘admin2′”, ‘connection.open’}}

tell me what can be done?

I made trough the rabbitmq web interface new vhost and user, made an access to the vhost, did not help