AMQP reconnect storm

Landscape Server 26.04.0.1 on Ubuntu 26.04 with RabbitMQ 4.0.5 enters an AMQP reconnect storm during update_security_db.sh/process-usns.

process-usns inherits BatchScript _setup_amqp=True and loads canonical/txlongpoll/specs/amqp0-8.xml via txAMQP 0.8.2.

strace shows:

sendto(…, “AMQP\1\1\10\0”, 8, …)

recvfrom(…, “AMQP\3\1\0\0”, 8, …)

RabbitMQ logs:

{bad_version,{1,1,8,0}}

AMQFactory has initialDelay = 0.01, causing rapid reconnects and multi-GB logs.

Fresh install using manual install process with an app and db server.