# Indices replicas are set to 0 during night? \[7.11.2\] **URL:** \ **Category:** Elasticsearch\ **Created:** [September 8, 2021, 8:29am UTC](https://discuss.elastic.co/t/indices-replicas-are-set-to-0-during-night-7-11-2/283627 "2021-09-08T08:29:56Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![mbooh](https://avatars.discourse-cdn.com/v4/letter/m/e495f1/32.png) [@mbooh](https://discuss.elastic.co/u/mbooh)\ **Post date:** [September 8, 2021, 8:29am UTC](https://discuss.elastic.co/t/indices-replicas-are-set-to-0-during-night-7-11-2/283627/1 "2021-09-08T08:29:56Z")
Hi! I have a strange behavior. During night one of my indices lost a replica setting? Yesterday everything worked fine, they both had 1 replica but this morning it is 0 on one of them meaning when I close one node down I get the "all shards failed" error. How can that be? I set the replicas with a POST command, can it be specified in the .yaml instead? ```auto health status index uuid pri rep docs.count docs.deleted store.size pri.store.size green open klaranatetwebutv2_2 QZvcjC9JQhehCiTT7BHxEQ 1 1 48519 17690 526.3mb 263.1mb green open klaranatetwebutv2_1 jKF9YttySPuQ6H8EkiDzpw 1 0 48519 664 163.7mb 163.7mb ``` And why is there \_1 and \_2? That i don't really understand as well. ```auto [2021-09-08T10:19:28,603][WARN][r.suppressed] [STHLM-KLARA-04] path: /klaranatetwebutv2_1/_search, params: {typed_keys=true, index=klaranatetwebutv2_1} org.elasticsearch.action.search.SearchPhaseExecutionException: all shards failed at org.elasticsearch.action.search.AbstractSearchAsyncAction.onPhaseFailure(AbstractSearchAsyncAction.java:601) [elasticsearch-7.11.2.jar:7.11.2] at org.elasticsearch.action.search.AbstractSearchAsyncAction.executeNextPhase(AbstractSearchAsyncAction.java:332) [elasticsearch-7.11.2.jar:7.11.2] at org.elasticsearch.action.search.AbstractSearchAsyncAction.onPhaseDone(AbstractSearchAsyncAction.java:636) [elasticsearch-7.11.2.jar:7.11.2] at org.elasticsearch.action.search.AbstractSearchAsyncAction.onShardFailure(AbstractSearchAsyncAction.java:415) [elasticsearch-7.11.2.jar:7.11.2] at org.elasticsearch.action.search.AbstractSearchAsyncAction.lambda$performPhaseOnShard$0(AbstractSearchAsyncAction.java:240) [elasticsearch-7.11.2.jar:7.11.2] at org.elasticsearch.action.search.AbstractSearchAsyncAction$2.doRun(AbstractSearchAsyncAction.java:308) [elasticsearch-7.11.2.jar:7.11.2] at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:26) [elasticsearch-7.11.2.jar:7.11.2] at org.elasticsearch.common.util.concurrent.TimedRunnable.doRun(TimedRunnable.java:33) [elasticsearch-7.11.2.jar:7.11.2] at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingAbstractRunnable.doRun(ThreadContext.java:732) [elasticsearch-7.11.2.jar:7.11.2] at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:26) [elasticsearch-7.11.2.jar:7.11.2] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) [?:?] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630) [?:?] at java.lang.Thread.run(Thread.java:832) [?:?] Caused by: org.elasticsearch.action.NoShardAvailableActionException at org.elasticsearch.action.search.AbstractSearchAsyncAction.onShardFailure(AbstractSearchAsyncAction.java:448) ~[elasticsearch-7.11.2.jar:7.11.2] at org.elasticsearch.action.search.AbstractSearchAsyncAction.onShardFailure(AbstractSearchAsyncAction.java:397) [elasticsearch-7.11.2.jar:7.11.2] ``` Thanks for your help! /Kristoffer ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [September 8, 2021, 9:46am UTC](https://discuss.elastic.co/t/indices-replicas-are-set-to-0-during-night-7-11-2/283627/2 "2021-09-08T09:46:39Z")
Do the logs on the master mention anything about the index during this time? ---
**Author:** ![mbooh](https://avatars.discourse-cdn.com/v4/letter/m/e495f1/32.png) [@mbooh](https://discuss.elastic.co/u/mbooh)\ **Post date:** [September 8, 2021, 11:39am UTC](https://discuss.elastic.co/t/indices-replicas-are-set-to-0-during-night-7-11-2/283627/3 "2021-09-08T11:39:34Z")
I found this in the current master node log from tonight: ```auto [2021-09-08T02:24:00,343][INFO][o.e.x.m.MlDailyMaintenanceService] [STHLM-KLARA-04] triggering scheduled [ML] maintenance tasks [2021-09-08T02:24:00,358][INFO][o.e.x.m.a.TransportDeleteExpiredDataAction] [STHLM-KLARA-04] Deleting expired data [2021-09-08T02:24:00,405][INFO][o.e.x.m.j.r.UnusedStatsRemover] [STHLM-KLARA-04] Successfully deleted [0] unused stats documents [2021-09-08T02:24:00,421][INFO][o.e.x.m.a.TransportDeleteExpiredDataAction] [STHLM-KLARA-04] Completed deletion of expired ML data [2021-09-08T02:24:00,421][INFO][o.e.x.m.MlDailyMaintenanceService] [STHLM-KLARA-04] Successfully completed [ML] maintenance task: triggerDeleteExpiredDataTask [2021-09-08T03:30:00,392][INFO][o.e.x.s.SnapshotRetentionTask] [STHLM-KLARA-04] starting SLM retention snapshot cleanup task [2021-09-08T03:30:00,392][INFO][o.e.x.s.SnapshotRetentionTask] [STHLM-KLARA-04] there are no repositories to fetch, SLM retention snapshot cleanup task complete [2021-09-08T07:30:00,557][INFO][o.e.c.m.MetadataDeleteIndexService] [STHLM-KLARA-04] [klaranatetwebutv2_1/ZPmtXs0rToKdwe_Pz5639Q] deleting index [2021-09-08T07:30:01,255][INFO][o.e.c.m.MetadataCreateIndexService] [STHLM-KLARA-04] [klaranatetwebutv2_1] creating index, cause [api], templates [], shards [1]/[0] [2021-09-08T07:30:01,446][INFO][o.e.c.r.a.AllocationService] [STHLM-KLARA-04] Cluster health status changed from [YELLOW] to [GREEN] (reason: [shards started [[klaranatetwebutv2_1][0]]]). [2021-09-08T07:30:01,683][INFO][o.e.c.m.MetadataMappingService] [STHLM-KLARA-04] [klaranatetwebutv2_1/jKF9YttySPuQ6H8EkiDzpw] create_mapping [_doc] ``` It looks like index are deleted and created, could that be the thing and that they are created without replicas? /Kristoffer ---
**Author:** ![mbooh](https://avatars.discourse-cdn.com/v4/letter/m/e495f1/32.png) [@mbooh](https://discuss.elastic.co/u/mbooh)\ **Post date:** [September 8, 2021, 4:34pm UTC](https://discuss.elastic.co/t/indices-replicas-are-set-to-0-during-night-7-11-2/283627/4 "2021-09-08T16:34:49Z")
Hi! So I found it. It looks like the index is deleted and created by code using [Elasticsearch.Net](http://Elasticsearch.Net) and when that is done this code is run: ```auto var createIndexResponse = Indices.Create(indexName, createIndex => createIndex .Settings(settings => settings .NumberOfShards(1) .NumberOfReplicas(0) .Analysis(analysis => analysisSettings)) .Timeout(TimeSpan.FromSeconds(60))); ``` No wonder the index was created without replica! /Kristoffer ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [October 6, 2021, 4:35pm UTC](https://discuss.elastic.co/t/indices-replicas-are-set-to-0-during-night-7-11-2/283627/5 "2021-10-06T16:35:34Z")
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