Hi Team,
Data node from the cluster some times automatically removed without any high heap usage.
with in sometime it joins automatically.
Please help me to sort it out.
Elasticsearch version :7.3.2
OS:ubunutu
2022-05-22T09:34:04,053][INFO ][o.e.c.s.MasterService ] [master1] node-left[{data3}{N002utNPTYKE1G0NiuEmmQ}{SpuwRpCQSX6gkDvs8T1_MA}{ip}{ip:port}{d}{xpack.installed=true} followers check retry count exceeded], term: 16, version: 385126, reason: removed {{data3}{N002utNPTYKE1G0NiuEmmQ}{SpuwRpCQSX6gkDvs8T1_MA}{ip}{ip:port}{d}{xpack.installed=true},}
[2022-05-22T09:34:04,237][INFO ][o.e.c.s.ClusterApplierService] [master1] removed {{data3}{N002utNPTYKE1G0NiuEmmQ}{SpuwRpCQSX6gkDvs8T1_MA}{ip}{ip:port}{d}{xpack.installed=true},}, term: 16, version: 385126, reason: Publication{term=16, version=385126}
[2022-05-22T09:34:04,255][INFO ][o.e.c.r.DelayedAllocationService] [master1] scheduling reroute for delayed shards in [59.7s] (21 delayed shards)
[2022-05-22T09:34:04,259][WARN ][o.e.c.r.a.AllocationService] [master1] [1][4] marking unavailable shards as stale: [0os98SECRnaYlfMr8DKTEA]
[2022-05-22T09:36:07,507][WARN ][o.e.c.r.a.AllocationService] [master1] [1][1] marking unavailable shards as stale: [yQj9BTm2TRKM8DfiOd5INw]
[2022-05-22T09:42:17,214][INFO ][o.e.c.s.MasterService ] [master1] node-join[{data3}{N002utNPTYKE1G0NiuEmmQ}{SpuwRpCQSX6gkDvs8T1_MA}{ip}{ip:port}{d}{xpack.installed=true} join existing leader, {data3}{N002utNPTYKE1G0NiuEmmQ}{SpuwRpCQSX6gkDvs8T1_MA}{ip}{ip:port}{d}{xpack.installed=true} join existing leader], term: 16, version: 385146, reason: added {{data3}{N002utNPTYKE1G0NiuEmmQ}{SpuwRpCQSX6gkDvs8T1_MA}{ip}{ip:port}{d}{xpack.installed=true},}
[2022-05-22T09:42:17,531][INFO ][o.e.c.s.ClusterApplierService] [master1] added {{data3}{N002utNPTYKE1G0NiuEmmQ}{SpuwRpCQSX6gkDvs8T1_MA}{ip}{ip:port}{d}{xpack.installed=true},}, term: 16, version: 385146, reason: Publication{term=16, version=385146}
[2022-05-22T09:51:07,253][WARN ][o.e.c.r.a.AllocationService] [master1] [1][2] marking unavailable shards as stale: [CpjBmzAMQSmLZEufTQIqVQ]
[2022-05-22T10:06:58,624][INFO ][o.e.c.r.a.AllocationService] [master1] Cluster health status changed from [YELLOW] to [GREEN] (reason: [shards started [[1][4]] ...]).