Hello,
I am using two instance of elasticsearch in the same machine; I have 94GO Ram, and 8 vCPUs. I used 22 GO memory for each instance and I had this error message:
[2018-09-20T14:11:39,342][WARN ][o.e.i.f.SyncedFlushService] [nokia1] [.monitoring-es-6-2018.09.19][0] can't to issue sync id [TL_W7317TJCsfv4C7t0EAA] for out of sync replica [[.monitoring-es-6-2018.09.19][0], node[_NdHXtTaS22gSefNnK7yuA], [R], s[STARTED], a[id=KvdlXf70RRaClt3A0EBHCg]] with num docs [40757]; num docs on primary [31441]
[2018-09-20T15:09:21,487][WARN ][o.e.m.j.JvmGcMonitorService] [nokia1] [gc][young][3780][160] duration [3.3s], collections [1]/[3.7s], total [3.3s]/[14.4s], memory [795.4mb]->[379.8mb]/[19.9gb], all_pools {[young] [421.5mb]->[3.3mb]/[532.5mb]}{[survivor] [11.7mb]->[14.5mb]/[66.5mb]}{[old] [362.2mb]->[362.9mb]/[19.3gb]}
[2018-09-20T15:09:21,491][WARN ][o.e.m.j.JvmGcMonitorService] [nokia1] [gc][3780] overhead, spent [3.3s] collecting in the last [3.7s]
[2018-09-20T15:11:38,714][WARN ][o.e.m.j.JvmGcMonitorService] [nokia1] [gc][young][3869][166] duration [49s], collections [1]/[49.1s], total [49s]/[1m], memory [890.6mb]->[415.4mb]/[19.9gb], all_pools {[young] [510.8mb]->[27.4mb]/[532.5mb]}{[survivor] [15.9mb]->[24.1mb]/[66.5mb]}{[old] [363.7mb]->[363.8mb]/[19.3gb]}
[2018-09-20T15:11:38,714][WARN ][o.e.m.j.JvmGcMonitorService] [nokia1] [gc][3869] overhead, spent [49s] collecting in the last [49.1s]
[2018-09-20T15:11:46,478][WARN ][o.e.m.j.JvmGcMonitorService] [nokia1] [gc][young][3871][167] duration [6.4s], collections [1]/[6.7s], total [6.4s]/[1.1m], memory [778.3mb]->[430.3mb]/[19.9gb], all_pools {[young] [390.3mb]->[46.7mb]/[532.5mb]}{[survivor] [24.1mb]->[19.3mb]/[66.5mb]}{[old] [363.8mb]->[364.2mb]/[19.3gb]}
[2018-09-20T15:11:46,479][WARN ][o.e.m.j.JvmGcMonitorService] [nokia1] [gc][3871] overhead, spent [6.4s] collecting in the last [6.7s]
[2018-09-20T15:18:39,082][WARN ][o.e.m.j.JvmGcMonitorService] [nokia1] [gc][young][4279][192] duration [4.6s], collections [1]/[5.3s], total [4.6s]/[1.2m], memory [901.1mb]->[381.6mb]/[19.9gb], all_pools {[young] [517.2mb]->[2.3mb]/[532.5mb]}{[survivor] [14.8mb]->[9.3mb]/[66.5mb]}{[old] [369mb]->[369.8mb]/[19.3gb]}
[2018-09-20T15:18:39,082][WARN ][o.e.m.j.JvmGcMonitorService] [nokia1] [gc][4279] overhead, spent [4.6s] collecting in the last [5.3s]
[2018-09-20T15:24:09,091][ERROR][o.e.x.m.c.n.NodeStatsCollector] [nokia1] collector [node_stats] timed out when collecting data
I don't know how to fix this problem, because I am not using more than the half of 94 for two instances
ps: Logstash is also running in the same machine
Thanks for help