Logs suit... :
[2018-04-09T20:09:04,318][WARN ][o.e.b.Natives ] cannot check if running as root because JNA is not available
[2018-04-09T20:09:04,318][WARN ][o.e.b.Natives ] cannot install system call filter because JNA is not available
[2018-04-09T20:09:04,319][WARN ][o.e.b.Natives ] cannot register console handler because JNA is not available
[2018-04-09T20:09:04,320][WARN ][o.e.b.Natives ] cannot getrlimit RLIMIT_NPROC because JNA is not available
[2018-04-09T20:09:04,320][WARN ][o.e.b.Natives ] cannot getrlimit RLIMIT_AS beacuse JNA is not available
[2018-04-09T20:09:04,320][WARN ][o.e.b.Natives ] cannot getrlimit RLIMIT_FSIZE because JNA is not available
[2018-04-09T20:09:04,484][INFO ][o.e.n.Node ] [srvl-elk-01] initializing ...
[2018-04-09T20:09:04,545][INFO ][o.e.e.NodeEnvironment ] [srvl-elk-01] using [1] data paths, mounts [[/ (/dev/mapper/SRVL--ELK--01--vg-root)]], net usable_space [87.5gb], net total_space [93.7gb], types [ext4]
[2018-04-09T20:09:04,545][INFO ][o.e.e.NodeEnvironment ] [srvl-elk-01] heap size [1011.2mb], compressed ordinary object pointers [unknown]
[2018-04-09T20:09:04,546][INFO ][o.e.n.Node ] [srvl-elk-01] node name [srvl-elk-01], node ID [nvv-moR7SxaCofkw3gRlYQ]
[2018-04-09T20:09:04,546][INFO ][o.e.n.Node ] [srvl-elk-01] version[6.2.3], pid[1676], build[c59ff00/2018-03-13T10:06:29.741383Z], OS[Linux/4.9.0-3-686-pae/i386], JVM[Oracle Corporation/OpenJDK Server VM/1.8.0_162/25.162-b12]
[2018-04-09T20:09:04,547][INFO ][o.e.n.Node ] [srvl-elk-01] JVM arguments [-Xms1g, -Xmx1g, -XX:+UseConcMarkSweepGC, -XX:CMSInitiatingOccupancyFraction=75, -XX:+UseCMSInitiatingOccupancyOnly, -XX:+AlwaysPreTouch, -Xss1m, -Djava.awt.headless=true, -Dfile.encoding=UTF-8, -Djna.nosys=true, -XX:-OmitStackTraceInFastThrow, -Dio.netty.noUnsafe=true, -Dio.netty.noKeySetOptimization=true, -Dio.netty.recycler.maxCapacityPerThread=0, -Dlog4j.shutdownHookEnabled=false, -Dlog4j2.disable.jmx=true, -Djava.io.tmpdir=/tmp/elasticsearch.wA8eCDCL, -XX:+HeapDumpOnOutOfMemoryError, -XX:HeapDumpPath=/var/lib/elasticsearch, -XX:+PrintGCDetails, -XX:+PrintGCDateStamps, -XX:+PrintTenuringDistribution, -XX:+PrintGCApplicationStoppedTime, -Xloggc:/var/log/elasticsearch/gc.log, -XX:+UseGCLogFileRotation, -XX:NumberOfGCLogFiles=32, -XX:GCLogFileSize=64m, -Des.path.home=/usr/share/elasticsearch, -Des.path.conf=/etc/elasticsearch]
[2018-04-09T20:09:05,370][INFO ][o.e.p.PluginsService ] [srvl-elk-01] loaded module [aggs-matrix-stats]
[2018-04-09T20:09:05,370][INFO ][o.e.p.PluginsService ] [srvl-elk-01] loaded module [analysis-common]
[2018-04-09T20:09:05,371][INFO ][o.e.p.PluginsService ] [srvl-elk-01] loaded module [ingest-common]
[2018-04-09T20:09:05,371][INFO ][o.e.p.PluginsService ] [srvl-elk-01] loaded module [lang-expression]
[2018-04-09T20:09:05,371][INFO ][o.e.p.PluginsService ] [srvl-elk-01] loaded module [lang-mustache]
[2018-04-09T20:09:05,371][INFO ][o.e.p.PluginsService ] [srvl-elk-01] loaded module [lang-painless]
[2018-04-09T20:09:05,371][INFO ][o.e.p.PluginsService ] [srvl-elk-01] loaded module [mapper-extras]
[2018-04-09T20:09:05,371][INFO ][o.e.p.PluginsService ] [srvl-elk-01] loaded module [parent-join]
[2018-04-09T20:09:05,371][INFO ][o.e.p.PluginsService ] [srvl-elk-01] loaded module [percolator]
[2018-04-09T20:09:05,371][INFO ][o.e.p.PluginsService ] [srvl-elk-01] loaded module [rank-eval]
[2018-04-09T20:09:05,371][INFO ][o.e.p.PluginsService ] [srvl-elk-01] loaded module [reindex]
[2018-04-09T20:09:05,372][INFO ][o.e.p.PluginsService ] [srvl-elk-01] loaded module [repository-url]
[2018-04-09T20:09:05,372][INFO ][o.e.p.PluginsService ] [srvl-elk-01] loaded module [transport-netty4]
[2018-04-09T20:09:05,372][INFO ][o.e.p.PluginsService ] [srvl-elk-01] loaded module [tribe]
[2018-04-09T20:09:05,372][INFO ][o.e.p.PluginsService ] [srvl-elk-01] no plugins loaded
[2018-04-09T20:09:08,393][INFO ][o.e.d.DiscoveryModule ] [srvl-elk-01] using discovery type [zen]
[2018-04-09T20:09:09,309][INFO ][o.e.n.Node ] [srvl-elk-01] initialized
[2018-04-09T20:09:09,309][INFO ][o.e.n.Node ] [srvl-elk-01] starting ...
[2018-04-09T20:09:09,456][INFO ][o.e.t.TransportService ] [srvl-elk-01] publish_address {10.255.30.50:9300}, bound_addresses {10.255.30.50:9300}
[2018-04-09T20:09:09,468][INFO ][o.e.b.BootstrapChecks ] [srvl-elk-01] bound or publishing to a non-loopback address, enforcing bootstrap checks
[2018-04-09T20:09:09,471][ERROR][o.e.b.Bootstrap ] [srvl-elk-01] node validation exception
[1] bootstrap checks failed
[1]: system call filters failed to install; check the logs and fix your configuration or disable system call filters at your own risk
[2018-04-09T20:09:09,473][INFO ][o.e.n.Node ] [srvl-elk-01] stopping ...
[2018-04-09T20:09:09,511][INFO ][o.e.n.Node ] [srvl-elk-01] stopped
[2018-04-09T20:09:09,512][INFO ][o.e.n.Node ] [srvl-elk-01] closing ...
[2018-04-09T20:09:09,522][INFO ][o.e.n.Node ] [srvl-elk-01] closed