2018-11-06 13:14:52 WARNING (Recorder) [homeassistant.components.recorder.migration] Database requires upgrade. Schema version: 5
2018-11-06 13:14:52 INFO (Recorder) [homeassistant.components.recorder.migration] Upgrading recorder db schema to version 6
2018-11-06 13:14:52 INFO (Recorder) [homeassistant.components.recorder.migration] Adding columns context_id, context_user_id to table events. Note: this can take several minutes on large databases and slow computers. Please be patient!
2018-11-06 13:14:58 WARNING (MainThread) [homeassistant.setup] Setup of recorder is taking over 10 seconds.
2018-11-06 14:13:53 INFO (Recorder) [homeassistant.components.recorder.migration] Unable to use quick column add. Adding 1 by 1.
2018-11-06 14:13:53 ERROR (Recorder) [homeassistant.components.recorder.util] Error executing query: (_mysql_exceptions.OperationalError) (2002, "Can't connect to MySQL server on 'core-mariadb' (115)") (Background on this error at: [url=http://sqlalche.me/e/e3q8]http://sqlalche.me/e/e3q8[/url])
2018-11-06 14:13:53 ERROR (Recorder) [homeassistant.components.recorder] Error during connection setup: (_mysql_exceptions.OperationalError) (2013, 'Lost connection to MySQL server during query') (Background on this error at: [url=http://sqlalche.me/e/e3q8]http://sqlalche.me/e/e3q8[/url]) (retrying in 3 seconds)
2018-11-06 14:13:57 ERROR (Recorder) [homeassistant.components.recorder] Error during connection setup: (_mysql_exceptions.OperationalError) (2002, "Can't connect to MySQL server on 'core-mariadb' (115)") (Background on this error at: [url=http://sqlalche.me/e/e3q8]http://sqlalche.me/e/e3q8[/url]) (retrying in 3 seconds)
2018-11-06 14:14:00 ERROR (Recorder) [homeassistant.components.recorder] Error during connection setup: (_mysql_exceptions.OperationalError) (2002, "Can't connect to MySQL server on 'core-mariadb' (115)") (Background on this error at: [url=http://sqlalche.me/e/e3q8]http://sqlalche.me/e/e3q8[/url]) (retrying in 3 seconds)
2018-11-06 14:14:04 WARNING (Recorder) [homeassistant.components.recorder.migration] Database requires upgrade. Schema version: 5
2018-11-06 14:14:04 INFO (Recorder) [homeassistant.components.recorder.migration] Upgrading recorder db schema to version 6
2018-11-06 14:14:04 INFO (Recorder) [homeassistant.components.recorder.migration] Adding columns context_id, context_user_id to table events. Note: this can take several minutes on large databases and slow computers. Please be patient!