I've confirmed, rabbitmq in Lucid (1.7.2) has serious problems starting when the hostname is unresolvable.
I set my hostname to several non existent hostnames, and each time I got this on installation of rabbitmq-server: Setting up rabbitmq-server (1.7.2-1ubuntu1) ... Adding group `rabbitmq' (GID 131) ... Done. Adding system user `rabbitmq' (UID 121) ... Adding new user `rabbitmq' (UID 121) with group `rabbitmq' ... Not creating home directory `/var/lib/rabbitmq'. Starting rabbitmq-server: FAILED - check /var/log/rabbitmq/startup_log, _err rabbitmq-server. invoke-rc.d: initscript rabbitmq-server, action "start" failed. dpkg: error processing rabbitmq-server (--configure): subprocess installed post-installation script returned error exit status 1 Processing triggers for libc-bin ... ldconfig deferred processing now taking place Errors were encountered while processing: rabbitmq-server E: Sub-process /usr/bin/dpkg returned an error code (1) This also seems to break rabbitmq for subsequent restarts if you change the hostname. Marking Confirmed. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to rabbitmq-server in ubuntu. https://bugs.launchpad.net/bugs/653405 Title: rabbitmq-server fails to start if hostname is unresolvable -- 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