Elasticsearch and kibana 5.2.2 crash without log

Elastic Stack Elasticsearch
1

I am running elasticsearch and kibana 5.2.2.

I have a cluster of two nodes. One node kept disappearing with no trace. The only entries in the log are
[2017-03-13T14:37:20,341][INFO ][o.e.n.Node ] [PerfNode_2] stopping ...
[2017-03-13T14:37:20,715][INFO ][o.e.n.Node ] [PerfNode_2] stopped
[2017-03-13T14:37:20,715][INFO ][o.e.n.Node ] [PerfNode_2] closing ...
[2017-03-13T14:37:20,743][INFO ][o.e.n.Node ] [PerfNode_2] closed

I have turned on Debug:
"logger" : {
"action" : {
"level" : "debug"
}
}

From what I have researched it seemed to indicate that maybe it's a JVM OOM and got killed by OS? But I have the setting as 2G and the host has plenty memory.

I just enabled the host to generate kernel log. Hopefully I can catch the OOM details.

2

It's not being killed, but being asked to shutdown gracefully.
Check your OS level logs.