Description of problem:
Upon EVM restart, MiqUiWorker and associated processes (MiqWebServiceWorker, MiqWebsocketWorker) fail to start.

No errors reported in the logs and appliance UI no longer accessible. No discernible configuration changes made prior to this behaviour.

This has occurred twice, with freshly installed appliances.


Version-Release number of selected component (if applicable):
VMware appliance version 5.7.0.17.


How reproducible:

Steps to Reproduce:
1. Import example database (to be provided).
2.
3.

Actual results:


Expected results:


Additional info:

Roles are enabled:

[root@localhost ~]# vmdb
[root@localhost vmdb]# rails c
irb(main):001:0> MiqServer.my_server.assigned_role_names
PostgreSQLAdapter#log_after_checkout, connection_pool: size: 5, connections: 1, in use: 1, waiting_in_queue: 0
=> ["automate", "database_operations", "database_owner", "ems_inventory", "ems_operations", "event", "reporting", "scheduler", "smartstate", "user_interface", "web_services", "websocket"]