below the elasticsearch logs
[2018-02-20T09:37:10,337][INFO ][o.e.n.Node ] [] initializing ...
[2018-02-20T09:37:10,469][INFO ][o.e.e.NodeEnvironment ] [Nz277Vr] using [1] data paths, mounts [[/ (rootfs)]], net usable_space [48gb], net total_space [49.9gb], spins? [unknown], types [rootfs]
[2018-02-20T09:37:10,469][INFO ][o.e.e.NodeEnvironment ] [Nz277Vr] heap size [1.9gb], compressed ordinary object pointers [true]
[2018-02-20T09:37:10,511][INFO ][o.e.n.Node ] node name [Nz277Vr] derived from node ID [Nz277VrOSg67aQ_WCdvd_w]; set [node.name] to override
[2018-02-20T09:37:10,511][INFO ][o.e.n.Node ] version[5.6.7], pid[967], build[4669214/2018-01-25T21:14:50.776Z], OS[Linux/3.10.0-693.17.1.el7.x86_64/amd64], JVM[Oracle Corporation/OpenJDK 64-Bit Server VM/1.8.0_161/25.161-b14]
[2018-02-20T09:37:10,511][INFO ][o.e.n.Node ] JVM arguments [-Xms2g, -Xmx2g, -XX:+UseConcMarkSweepGC, -XX:CMSInitiatingOccupancyFraction=75, -XX:+UseCMSInitiatingOccupancyOnly, -XX:+AlwaysPreTouch, -Xss1m, -Djava.awt.headless=true, -Dfile.encoding=UTF-8, -Djna.nosys=true, -Djdk.io.permissionsUseCanonicalPath=true, -Dio.netty.noUnsafe=true, -Dio.netty.noKeySetOptimization=true, -Dio.netty.recycler.maxCapacityPerThread=0, -Dlog4j.shutdownHookEnabled=false, -Dlog4j2.disable.jmx=true, -Dlog4j.skipJansi=true, -XX:+HeapDumpOnOutOfMemoryError, -Des.path.home=/usr/share/elasticsearch]
[2018-02-20T09:37:12,264][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [aggs-matrix-stats]
[2018-02-20T09:37:12,264][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [ingest-common]
[2018-02-20T09:37:12,264][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [lang-expression]
[2018-02-20T09:37:12,264][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [lang-groovy]
[2018-02-20T09:37:12,264][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [lang-mustache]
[2018-02-20T09:37:12,264][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [lang-painless]
[2018-02-20T09:37:12,264][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [parent-join]
[2018-02-20T09:37:12,264][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [percolator]
[2018-02-20T09:37:12,264][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [reindex]
[2018-02-20T09:37:12,264][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [transport-netty3]
[2018-02-20T09:37:12,264][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [transport-netty4]
[2018-02-20T09:37:12,265][INFO ][o.e.p.PluginsService ] [Nz277Vr] no plugins loaded
[2018-02-20T09:37:15,596][INFO ][o.e.d.DiscoveryModule ] [Nz277Vr] using discovery type [zen]
[2018-02-20T09:37:16,872][INFO ][o.e.n.Node ] initialized
[2018-02-20T09:37:16,872][INFO ][o.e.n.Node ] [Nz277Vr] starting ...
[2018-02-20T09:37:17,115][INFO ][o.e.t.TransportService ] [Nz277Vr] publish_address {127.0.0.1:9300}, bound_addresses {[::1]:9300}, {127.0.0.1:9300}
[2018-02-20T09:37:20,293][INFO ][o.e.c.s.ClusterService ] [Nz277Vr] new_master {Nz277Vr}{Nz277VrOSg67aQ_WCdvd_w}{1PwGCWa0RSGOqdZftB51Ww}{127.0.0.1}{127.0.0.1:9300}, reason: zen-disco-elected-as-master ([0] nodes joined)
[2018-02-20T09:37:20,463][INFO ][o.e.h.n.Netty4HttpServerTransport] [Nz277Vr] publish_address {127.0.0.1:9200}, bound_addresses {[::1]:9200}, {127.0.0.1:9200}
[2018-02-20T09:37:20,463][INFO ][o.e.n.Node ] [Nz277Vr] started
[2018-02-20T09:37:20,664][INFO ][o.e.g.GatewayService ] [Nz277Vr] recovered [1] indices into cluster_state
[2018-02-20T09:37:21,243][INFO ][o.e.c.r.a.AllocationService] [Nz277Vr] Cluster health status changed from [RED] to [GREEN] (reason: [shards started [[graylog_0][3], [graylog_0][1], [graylog_0][2], [graylog_0][0]] ...]).
[2018-02-20T09:46:13,954][INFO ][o.e.n.Node ] [Nz277Vr] stopping ...
[2018-02-20T09:46:14,044][INFO ][o.e.n.Node ] [Nz277Vr] stopped
[2018-02-20T09:46:14,044][INFO ][o.e.n.Node ] [Nz277Vr] closing ...
[2018-02-20T09:46:14,053][INFO ][o.e.n.Node ] [Nz277Vr] closed
[2018-02-20T09:50:28,422][INFO ][o.e.n.Node ] [] initializing ...
[2018-02-20T09:50:28,582][INFO ][o.e.e.NodeEnvironment ] [Nz277Vr] using [1] data paths, mounts [[/ (rootfs)]], net usable_space [48gb], net total_space [49.9gb], spins? [unknown], types [rootfs]
[2018-02-20T09:50:28,582][INFO ][o.e.e.NodeEnvironment ] [Nz277Vr] heap size [1.9gb], compressed ordinary object pointers [true]
[2018-02-20T09:50:28,609][INFO ][o.e.n.Node ] node name [Nz277Vr] derived from node ID [Nz277VrOSg67aQ_WCdvd_w]; set [node.name] to override
[2018-02-20T09:50:28,609][INFO ][o.e.n.Node ] version[5.6.7], pid[968], build[4669214/2018-01-25T21:14:50.776Z], OS[Linux/3.10.0-693.17.1.el7.x86_64/amd64], JVM[Oracle Corporation/OpenJDK 64-Bit Server VM/1.8.0_161/25.161-b14]
[2018-02-20T09:50:28,609][INFO ][o.e.n.Node ] JVM arguments [-Xms2g, -Xmx2g, -XX:+UseConcMarkSweepGC, -XX:CMSInitiatingOccupancyFraction=75, -XX:+UseCMSInitiatingOccupancyOnly, -XX:+AlwaysPreTouch, -Xss1m, -Djava.awt.headless=true, -Dfile.encoding=UTF-8, -Djna.nosys=true, -Djdk.io.permissionsUseCanonicalPath=true, -Dio.netty.noUnsafe=true, -Dio.netty.noKeySetOptimization=true, -Dio.netty.recycler.maxCapacityPerThread=0, -Dlog4j.shutdownHookEnabled=false, -Dlog4j2.disable.jmx=true, -Dlog4j.skipJansi=true, -XX:+HeapDumpOnOutOfMemoryError, -Des.path.home=/usr/share/elasticsearch]
[2018-02-20T09:50:30,274][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [aggs-matrix-stats]
[2018-02-20T09:50:30,274][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [ingest-common]
[2018-02-20T09:50:30,274][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [lang-expression]
[2018-02-20T09:50:30,274][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [lang-groovy]
[2018-02-20T09:50:30,274][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [lang-mustache]
[2018-02-20T09:50:30,274][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [lang-painless]
[2018-02-20T09:50:30,275][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [parent-join]
[2018-02-20T09:50:30,275][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [percolator]
[2018-02-20T09:50:30,275][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [reindex]
[2018-02-20T09:50:30,275][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [transport-netty3]
[2018-02-20T09:50:30,275][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [transport-netty4]
[2018-02-20T09:50:30,276][INFO ][o.e.p.PluginsService ] [Nz277Vr] no plugins loaded
[2018-02-20T09:50:33,446][INFO ][o.e.d.DiscoveryModule ] [Nz277Vr] using discovery type [zen]
[2018-02-20T09:50:34,827][INFO ][o.e.n.Node ] initialized
[2018-02-20T09:50:34,827][INFO ][o.e.n.Node ] [Nz277Vr] starting ...
[2018-02-20T09:50:35,142][INFO ][o.e.t.TransportService ] [Nz277Vr] publish_address {127.0.0.1:9300}, bound_addresses {[::1]:9300}, {127.0.0.1:9300}
[2018-02-20T09:50:38,365][INFO ][o.e.c.s.ClusterService ] [Nz277Vr] new_master {Nz277Vr}{Nz277VrOSg67aQ_WCdvd_w}{mZEpANQMRKSgU-yFM4mSSA}{127.0.0.1}{127.0.0.1:9300}, reason: zen-disco-elected-as-master ([0] nodes joined)
[2018-02-20T09:50:38,576][INFO ][o.e.h.n.Netty4HttpServerTransport] [Nz277Vr] publish_address {127.0.0.1:9200}, bound_addresses {[::1]:9200}, {127.0.0.1:9200}
[2018-02-20T09:50:38,577][INFO ][o.e.n.Node ] [Nz277Vr] started
[2018-02-20T09:50:38,878][INFO ][o.e.g.GatewayService ] [Nz277Vr] recovered [1] indices into cluster_state
[2018-02-20T09:50:39,302][INFO ][o.e.c.r.a.AllocationService] [Nz277Vr] Cluster health status changed from [RED] to [GREEN] (reason: [shards started [[graylog_0][1]] ...]).
[2018-02-20T10:30:04,110][INFO ][o.e.c.m.MetaDataMappingService] [Nz277Vr] [graylog_0/pAvJV2pTQvaOPZ2FbU6uSA] update_mapping [message]
[2018-02-20T10:58:31,842][INFO ][o.e.n.Node ] [Nz277Vr] stopping ...
[2018-02-20T10:58:31,988][INFO ][o.e.n.Node ] [Nz277Vr] stopped
[2018-02-20T10:58:31,989][INFO ][o.e.n.Node ] [Nz277Vr] closing ...
[2018-02-20T10:58:32,008][INFO ][o.e.n.Node ] [Nz277Vr] closed
[2018-02-20T10:59:23,269][INFO ][o.e.n.Node ] [] initializing ...
[2018-02-20T10:59:23,409][INFO ][o.e.e.NodeEnvironment ] [Nz277Vr] using [1] data paths, mounts [[/ (rootfs)]], net usable_space [48gb], net total_space [49.9gb], spins? [unknown], types [rootfs]
[2018-02-20T10:59:23,410][INFO ][o.e.e.NodeEnvironment ] [Nz277Vr] heap size [1.9gb], compressed ordinary object pointers [true]
[2018-02-20T10:59:23,429][INFO ][o.e.n.Node ] node name [Nz277Vr] derived from node ID [Nz277VrOSg67aQ_WCdvd_w]; set [node.name] to override
[2018-02-20T10:59:23,429][INFO ][o.e.n.Node ] version[5.6.7], pid[969], build[4669214/2018-01-25T21:14:50.776Z], OS[Linux/3.10.0-693.17.1.el7.x86_64/amd64], JVM[Oracle Corporation/OpenJDK 64-Bit Server VM/1.8.0_161/25.161-b14]
[2018-02-20T10:59:23,430][INFO ][o.e.n.Node ] JVM arguments [-Xms2g, -Xmx2g, -XX:+UseConcMarkSweepGC, -XX:CMSInitiatingOccupancyFraction=75, -XX:+UseCMSInitiatingOccupancyOnly, -XX:+AlwaysPreTouch, -Xss1m, -Djava.awt.headless=true, -Dfile.encoding=UTF-8, -Djna.nosys=true, -Djdk.io.permissionsUseCanonicalPath=true, -Dio.netty.noUnsafe=true, -Dio.netty.noKeySetOptimization=true, -Dio.netty.recycler.maxCapacityPerThread=0, -Dlog4j.shutdownHookEnabled=false, -Dlog4j2.disable.jmx=true, -Dlog4j.skipJansi=true, -XX:+HeapDumpOnOutOfMemoryError, -Des.path.home=/usr/share/elasticsearch]
[2018-02-20T10:59:25,130][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [aggs-matrix-stats]
[2018-02-20T10:59:25,130][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [ingest-common]
[2018-02-20T10:59:25,130][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [lang-expression]
[2018-02-20T10:59:25,130][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [lang-groovy]
[2018-02-20T10:59:25,130][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [lang-mustache]
[2018-02-20T10:59:25,130][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [lang-painless]
[2018-02-20T10:59:25,130][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [parent-join]
[2018-02-20T10:59:25,130][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [percolator]
[2018-02-20T10:59:25,130][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [reindex]
[2018-02-20T10:59:25,131][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [transport-netty3]
[2018-02-20T10:59:25,131][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [transport-netty4]
[2018-02-20T10:59:25,131][INFO ][o.e.p.PluginsService ] [Nz277Vr] no plugins loaded
[2018-02-20T10:59:27,807][INFO ][o.e.d.DiscoveryModule ] [Nz277Vr] using discovery type [zen]
[2018-02-20T10:59:28,907][INFO ][o.e.n.Node ] initialized
[2018-02-20T10:59:28,907][INFO ][o.e.n.Node ] [Nz277Vr] starting ...
[2018-02-20T10:59:29,186][INFO ][o.e.t.TransportService ] [Nz277Vr] publish_address {127.0.0.1:9300}, bound_addresses {[::1]:9300}, {127.0.0.1:9300}
[2018-02-20T10:59:32,297][INFO ][o.e.c.s.ClusterService ] [Nz277Vr] new_master {Nz277Vr}{Nz277VrOSg67aQ_WCdvd_w}{_GtnUbL5RByOgvuZyQ-Ozw}{127.0.0.1}{127.0.0.1:9300}, reason: zen-disco-elected-as-master ([0] nodes joined)
[2018-02-20T10:59:32,464][INFO ][o.e.h.n.Netty4HttpServerTransport] [Nz277Vr] publish_address {127.0.0.1:9200}, bound_addresses {[::1]:9200}, {127.0.0.1:9200}
[2018-02-20T10:59:32,464][INFO ][o.e.n.Node ] [Nz277Vr] started
[2018-02-20T10:59:32,754][INFO ][o.e.g.GatewayService ] [Nz277Vr] recovered [1] indices into cluster_state
[2018-02-20T10:59:33,255][INFO ][o.e.c.r.a.AllocationService] [Nz277Vr] Cluster health status changed from [RED] to [GREEN] (reason: [shards started [[graylog_0][3], [graylog_0][1], [graylog_0][2], [graylog_0][0]] ...]).
[2018-02-20T15:34:42,613][INFO ][o.e.c.m.MetaDataMappingService] [Nz277Vr] [graylog_0/pAvJV2pTQvaOPZ2FbU6uSA] update_mapping [message]
[2018-02-20T15:44:15,739][INFO ][o.e.n.Node ] [Nz277Vr] stopping ...
[2018-02-20T15:44:16,017][INFO ][o.e.n.Node ] [Nz277Vr] stopped
[2018-02-20T15:44:16,017][INFO ][o.e.n.Node ] [Nz277Vr] closing ...
[2018-02-20T15:44:16,032][INFO ][o.e.n.Node ] [Nz277Vr] closed
[2018-02-20T15:45:07,562][INFO ][o.e.n.Node ] [] initializing ...
[2018-02-20T15:45:07,680][INFO ][o.e.e.NodeEnvironment ] [Nz277Vr] using [1] data paths, mounts [[/ (rootfs)]], net usable_space [47.7gb], net total_space [49.9gb], spins? [unknown], types [rootfs]
[2018-02-20T15:45:07,680][INFO ][o.e.e.NodeEnvironment ] [Nz277Vr] heap size [1.9gb], compressed ordinary object pointers [true]
[2018-02-20T15:45:07,703][INFO ][o.e.n.Node ] node name [Nz277Vr] derived from node ID [Nz277VrOSg67aQ_WCdvd_w]; set [node.name] to override
[2018-02-20T15:45:07,703][INFO ][o.e.n.Node ] version[5.6.7], pid[971], build[4669214/2018-01-25T21:14:50.776Z], OS[Linux/3.10.0-693.17.1.el7.x86_64/amd64], JVM[Oracle Corporation/OpenJDK 64-Bit Server VM/1.8.0_161/25.161-b14]
[2018-02-20T15:45:07,703][INFO ][o.e.n.Node ] JVM arguments [-Xms2g, -Xmx2g, -XX:+UseConcMarkSweepGC, -XX:CMSInitiatingOccupancyFraction=75, -XX:+UseCMSInitiatingOccupancyOnly, -XX:+AlwaysPreTouch, -Xss1m, -Djava.awt.headless=true, -Dfile.encoding=UTF-8, -Djna.nosys=true, -Djdk.io.permissionsUseCanonicalPath=true, -Dio.netty.noUnsafe=true, -Dio.netty.noKeySetOptimization=true, -Dio.netty.recycler.maxCapacityPerThread=0, -Dlog4j.shutdownHookEnabled=false, -Dlog4j2.disable.jmx=true, -Dlog4j.skipJansi=true, -XX:+HeapDumpOnOutOfMemoryError, -Des.path.home=/usr/share/elasticsearch]
[2018-02-20T15:45:09,575][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [aggs-matrix-stats]
[2018-02-20T15:45:09,575][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [ingest-common]
[2018-02-20T15:45:09,575][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [lang-expression]
[2018-02-20T15:45:09,575][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [lang-groovy]
[2018-02-20T15:45:09,575][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [lang-mustache]
[2018-02-20T15:45:09,575][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [lang-painless]
[2018-02-20T15:45:09,575][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [parent-join]
[2018-02-20T15:45:09,575][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [percolator]
[2018-02-20T15:45:09,575][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [reindex]
[2018-02-20T15:45:09,575][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [transport-netty3]
[2018-02-20T15:45:09,576][INFO ][o.e.p.PluginsService ] [Nz277Vr] loaded module [transport-netty4]
[2018-02-20T15:45:09,576][INFO ][o.e.p.PluginsService ] [Nz277Vr] no plugins loaded
[2018-02-20T15:45:12,512][INFO ][o.e.d.DiscoveryModule ] [Nz277Vr] using discovery type [zen]
[2018-02-20T15:45:13,610][INFO ][o.e.n.Node ] initialized
[2018-02-20T15:45:13,611][INFO ][o.e.n.Node ] [Nz277Vr] starting ...
[2018-02-20T15:45:13,786][INFO ][o.e.t.TransportService ] [Nz277Vr] publish_address {127.0.0.1:9300}, bound_addresses {[::1]:9300}, {127.0.0.1:9300}
[2018-02-20T15:45:16,969][INFO ][o.e.c.s.ClusterService ] [Nz277Vr] new_master {Nz277Vr}{Nz277VrOSg67aQ_WCdvd_w}{OaO0NtGmTqKeDZ0fHoGcuQ}{127.0.0.1}{127.0.0.1:9300}, reason: zen-disco-elected-as-master ([0] nodes joined)
[2018-02-20T15:45:17,070][INFO ][o.e.h.n.Netty4HttpServerTransport] [Nz277Vr] publish_address {127.0.0.1:9200}, bound_addresses {[::1]:9200}, {127.0.0.1:9200}
[2018-02-20T15:45:17,071][INFO ][o.e.n.Node ] [Nz277Vr] started
[2018-02-20T15:45:17,387][INFO ][o.e.g.GatewayService ] [Nz277Vr] recovered [1] indices into cluster_state
[2018-02-20T15:45:17,956][INFO ][o.e.c.r.a.AllocationService] [Nz277Vr] Cluster health status changed from [RED] to [GREEN] (reason: [shards started [[graylog_0][2], [graylog_0][3], [graylog_0][0]] ...]).