@Th - I think you're probably correct in that this is a load issue, rather than a specific rabbitmq software issue. It looks like the system is so loaded you're hitting some sort of 90 second timeout at which point systemd just gives up:
/etc/systemd/system.conf: DefaultTimeoutStartSec=90s you could try increasing this to see if that gives rmq enough time to kick into life. ** Changed in: rabbitmq-server (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Server, which is subscribed to rabbitmq-server in Ubuntu. https://bugs.launchpad.net/bugs/1783325 Title: Rabbitmq-server times out during server startup To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rabbitmq-server/+bug/1783325/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs