Ubuntu's upstart starts all services for a given run level in parallel, and this can lead to a the console being unusable if the console ( `pe-httpd`) starts up before the database services (specifically, pe-puppetdb).
To restore usability to the console, it requires that service to be restarted.
- relates to
ENTERPRISE-502 pe-puppetserver and pe-console-services not starting after reboot on new PE install on Ubuntu 14.04
ENTERPRISE-483 PE PostgreSQL is started after services which depend on it on EL 6