Matthew Jones babe29ebfa Implement cluster health checks
* Add a local node queue to execute targeted jobs
* Add a setting for active cluster node id (per-node)
* Base the heartbeat time on the `modified` time on the Instance table
* Add periodic task that calls save() on the instance to update the
  heartbeat time if services are up
* Purge/update any ha/instance management commands
* Fix up CELERY_ROUTES settings data structure
2016-10-06 16:05:39 -04:00
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2016-07-26 14:50:48 -04:00