我的第一个问题，为什么Elasticsearch自动运行维护活动
我无法跟踪这次发生的时间，而此时我无法提取记录。
我们可以更改此时间吗？下面分享了我的日志。状态从红色更改为黄色是正确的，我们可以将其更改为绿色
请有人提供您的意见并加以查看。
谢谢。
[2018-12-09T15:24:41,022][INFO ][o.e.n.Node ] [_7EG38y] started
[2018-12-09T15:24:42,005][WARN ][o.e.x.s.a.s.m.NativeRoleMappingStore] [_7EG38y]
Failed to clear cache for realms [[]]
[2018-12-09T15:24:42,083][INFO ][o.e.l.LicenseService ] [_7EG38y] license [8
ec47b44-ca97-42ca-8836-df541be12e06] mode [basic] - valid
[2018-12-09T15:24:42,099][INFO ][o.e.g.GatewayService ] [_7EG38y] recovered
[1] indices into cluster_state
[2018-12-09T15:24:43,487][INFO ][o.e.c.r.a.AllocationService] [_7EG38y] Cluster
health status changed from [RED] to [YELLOW] (reason: [shards started [[data]
[0]] ...]).
[2018-12-10T00:48:00,430][INFO ][o.e.x.m.MlDailyMaintenanceService] triggering s
cheduled [ML] maintenance tasks
[2018-12-10T00:48:01,413][INFO ][o.e.x.m.a.TransportDeleteExpiredDataAction] [_7
EG38y] Deleting expired data
[2018-12-10T00:48:03,628][INFO ][o.e.x.m.a.TransportDeleteExpiredDataAction] [_7
EG38y] Completed deletion of expired data
[2018-12-10T00:48:03,643][INFO ][o.e.x.m.MlDailyMaintenanceService] Successfully
completed [ML] maintenance tasks