Error logs - 1

    [2015-11-12 11:45:51,935][INFO ][cluster.service          ] [es-elk-esmaster-01] added {[es-elk-esdata-01][3GfJFPmbQLyMJiMkOk19cg][es-elk-esdata-01][inet[/10.12.11.215:9300]]{aws_availability_zone=us-west-2a, master=false},}, reason: zen-disco-receive(join from node[[es-elk-esdata-01][3GfJFPmbQLyMJiMkOk19cg][es-elk-esdata-01][inet[/10.12.11.215:9300]]{aws_availability_zone=us-west-2a, master=false}])
    [2015-11-12 11:49:13,852][DEBUG][action.admin.cluster.node.stats] [es-elk-esmaster-01] failed to execute on node [3GfJFPmbQLyMJiMkOk19cg]
    org.elasticsearch.transport.ReceiveTimeoutTransportException: [es-elk-esdata-01][inet[/10.12.11.215:9300]][cluster:monitor/nodes/stats[n]] request_id [372539] timed out after [15000ms]
    at org.elasticsearch.transport.TransportService$TimeoutHandler.run(TransportService.java:366)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)
    [2015-11-12 11:49:43,853][DEBUG][action.admin.cluster.node.stats] [es-elk-esmaster-01] failed to execute on node [Nv9dvRY4SBOiYNan_Ja76g]
    org.elasticsearch.transport.ReceiveTimeoutTransportException: [es-elk-esdata-02][inet[/10.12.29.109:9300]][cluster:monitor/nodes/stats[n]] request_id [375803] timed out after [15001ms]
    at org.elasticsearch.transport.TransportService$TimeoutHandler.run(TransportService.java:366)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)
    [2015-11-12 11:50:13,853][DEBUG][action.admin.cluster.node.stats] [es-elk-esmaster-01] failed to execute on node [Nv9dvRY4SBOiYNan_Ja76g]
    org.elasticsearch.transport.ReceiveTimeoutTransportException: [es-elk-esdata-02][inet[/10.12.29.109:9300]][cluster:monitor/nodes/stats[n]] request_id [379067] timed out after [15000ms]
    at org.elasticsearch.transport.TransportService$TimeoutHandler.run(TransportService.java:366)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)