[Blueprint server-o-boot-experience] Server boot experience

[Clint Byrum]

Blueprint changed by Clint Byrum:

Whiteboard changed:
  Status: progress on some work items.
  https://bugs.launchpad.net/ubuntu/+bugs?field.tag=runlevel1 bugs
  reported.
  
  Work Items:
  [cjwatson] turn off quiet for server: DONE
  [jamesodhunt] allow upstart visualization tool to filter out jobs/events that aren't in existence: POSTPONED
  [clint-fewbar] define/document a simple job/alias/event for "networking up", for generic network services (event: static-network-up): DONE
- define/document a simple job/alias/event for "system has booted", for /etc/rc.local type behavior: TODO
- improve start on for cron and other services (start when all user info available): TODO
- update Upstart Cookbook with "abstract jobs" and full exposition of how to define optimal "start on" and "stop on" for a new job: TODO
+ define/document a simple job/alias/event for "system has booted", for /etc/rc.local type behavior (note that 'stopped rc' is usable but not well documented): POSTPONED
+ improve start on for cron and other services (start when all user info available) (cron should probably start on stopped rc): POSTPONED
+ update Upstart Cookbook with "abstract jobs" and full exposition of how to define optimal "start on" and "stop on" for a new job: POSTPONED
  [clint-fewbar] file bugs on services that don't respect single user mode appropriately: bug tag 'runlevel1' used for 21 bugs filed: DONE
  [clint-fewbar] automated testing for single to multiuser: POSTPONED
  [clint-fewbar] add init-checkconf rule to lintian for upstart jobs (may be infeasible as emits lines aren't always available to validate start/stop on conditions): POSTPONED
  need to measure boot speed difference between sourcing /etc/default files, and not: POSTPONED
  
  N/A work:
  define/document a simple job/alias/event for "local filesystems are up", for local services -- already exists, local-filesystems
  define/document a simple job/alias/event for "network filesystems are up", for network filesystem services - already exists, remote-filesystems
  
  Ideas
  
   * Serialize for debugging
   * Logging of job output (ideas also in upstart bug list)
   * Fencing (well defined sync points for boot)
     http://upstart.at/wp-content/uploads/2011/03/initctl2dot.png
  
     * as late as possible -- grub common one example for init.d
  
   * Generic Jobs (network-services, etc)
     * Document best practice in /usr/share/doc/upstart/examples and man page
   * Delay until all network interfaces are up
   * Default to always showing plymouth upstart bridge output
  
  * runlevel 1 and back to 2 doesn't work right
    * useful for emergency maintenance recovery
  * consider adding call to init-checkconf to lintian rule to ensure job config syntactically valid
  * clean-up behaviour of single-user mode
  * /etc/default/* -> what to do
  
  Actions:

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Server boot experience
https://blueprints.launchpad.net/ubuntu/+spec/server-o-boot-experience