Hello everyone,
when I run the ./bin/elasticsearch command I get the following logs:
[...........]
[2018-08-10T08:14:57,579][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [aggs-matrix-stats]
[2018-08-10T08:14:57,579][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [analysis-common]
[2018-08-10T08:14:57,580][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [ingest-common]
[2018-08-10T08:14:57,580][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [lang-expression]
[2018-08-10T08:14:57,580][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [lang-mustache]
[2018-08-10T08:14:57,580][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [lang-painless]
[2018-08-10T08:14:57,580][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [mapper-extras]
[2018-08-10T08:14:57,580][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [parent-join]
[2018-08-10T08:14:57,580][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [percolator]
[2018-08-10T08:14:57,580][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [rank-eval]
[2018-08-10T08:14:57,581][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [reindex]
[2018-08-10T08:14:57,581][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [repository-url]
[2018-08-10T08:14:57,581][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [transport-netty4]
[2018-08-10T08:14:57,581][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [tribe]
[2018-08-10T08:14:57,581][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [x-pack-core]
[2018-08-10T08:14:57,581][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [x-pack-deprecation]
[2018-08-10T08:14:57,581][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [x-pack-graph]
[2018-08-10T08:14:57,581][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [x-pack-logstash]
[2018-08-10T08:14:57,582][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [x-pack-ml]
[2018-08-10T08:14:57,582][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [x-pack-monitoring]
[2018-08-10T08:14:57,582][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [x-pack-rollup]
[2018-08-10T08:14:57,582][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [x-pack-security]
[2018-08-10T08:14:57,582][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [x-pack-sql]
[2018-08-10T08:14:57,582][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [x-pack-upgrade]
[2018-08-10T08:14:57,582][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] loaded module [x-pack-watcher]
[2018-08-10T08:14:57,583][INFO ][o.e.p.PluginsService ] [ZGgC7Hb] no plugins loaded
[2018-08-10T08:15:02,490][INFO ][o.e.x.s.a.s.FileRolesStore] [ZGgC7Hb] parsed [0] roles from file [/home/andrea2/elasticsearch-6.3.2/config/roles.yml]
[2018-08-10T08:15:03,771][INFO ][o.e.x.m.j.p.l.CppLogMessageHandler] [controller/2436] [Main.cc@109] controller (64 bit): Version 6.3.2 (Build 903094f295d249) Copyright (c) 2018 Elasticsearch BV
[2018-08-10T08:15:04,352][DEBUG][o.e.a.ActionModule ] Using REST wrapper from plugin org.elasticsearch.xpack.security.Security
[2018-08-10T08:15:04,694][INFO ][o.e.d.DiscoveryModule ] [ZGgC7Hb] using discovery type [zen]
[2018-08-10T08:15:05,915][INFO ][o.e.n.Node ] [ZGgC7Hb] initialized
[2018-08-10T08:15:05,915][INFO ][o.e.n.Node ] [ZGgC7Hb] starting ...
[2018-08-10T08:15:06,130][INFO ][o.e.t.TransportService ] [ZGgC7Hb] publish_address {127.0.0.1:9300}, bound_addresses {[::1]:9300}, {127.0.0.1:9300}
[2018-08-10T08:15:09,241][INFO ][o.e.c.s.MasterService ] [ZGgC7Hb] zen-disco-elected-as-master ([0] nodes joined)[, ], reason: new_master {ZGgC7Hb}{ZGgC7HbMSw2FKAvEFH28-w}{a0kLfcSMRRGhkqvYTd6cbw}{127.0.0.1}{127.0.0.1:9300}{ml.machine_memory=4135022592, xpack.installed=true, ml.max_open_jobs=20, ml.enabled=true}
[2018-08-10T08:15:09,247][INFO ][o.e.c.s.ClusterApplierService] [ZGgC7Hb] new_master {ZGgC7Hb}{ZGgC7HbMSw2FKAvEFH28-w}{a0kLfcSMRRGhkqvYTd6cbw}{127.0.0.1}{127.0.0.1:9300}{ml.machine_memory=4135022592, xpack.installed=true, ml.max_open_jobs=20, ml.enabled=true}, reason: apply cluster state (from master [master {ZGgC7Hb}{ZGgC7HbMSw2FKAvEFH28-w}{a0kLfcSMRRGhkqvYTd6cbw}{127.0.0.1}{127.0.0.1:9300}{ml.machine_memory=4135022592, xpack.installed=true, ml.max_open_jobs=20, ml.enabled=true} committed version [1] source [zen-disco-elected-as-master ([0] nodes joined)[, ]]])
[2018-08-10T08:15:09,293][INFO ][o.e.x.s.t.n.SecurityNetty4HttpServerTransport] [ZGgC7Hb] publish_address {127.0.0.1:9200}, bound_addresses {[::1]:9200}, {127.0.0.1:9200}
[2018-08-10T08:15:09,294][INFO ][o.e.n.Node ] [ZGgC7Hb] started
[2018-08-10T08:15:09,702][WARN ][o.e.x.s.a.s.m.NativeRoleMappingStore] [ZGgC7Hb] Failed to clear cache for realms [[]]
[2018-08-10T08:15:09,732][INFO ][o.e.l.LicenseService ] [ZGgC7Hb] license [e4dc900d-e45c-4547-a2c8-32a454aa57bb] mode [basic] - valid
[2018-08-10T08:15:09,750][INFO ][o.e.g.GatewayService ] [ZGgC7Hb] recovered [0] indices into cluster_state
[2018-08-10T08:15:54,799][INFO ][o.e.x.m.j.p.NativeController] Native controller process has stopped - no new native processes can be started
[2018-08-10T08:15:54,801][INFO ][o.e.n.Node ] [ZGgC7Hb] stopping ...
[2018-08-10T08:15:54,812][INFO ][o.e.x.w.WatcherService ] [ZGgC7Hb] stopping watch service, reason [shutdown initiated]
[2018-08-10T08:15:55,259][INFO ][o.e.n.Node ] [ZGgC7Hb] stopped
[2018-08-10T08:15:55,259][INFO ][o.e.n.Node ] [ZGgC7Hb] closing ...
[2018-08-10T08:15:55,272][INFO ][o.e.n.Node ] [ZGgC7Hb] closed
Why is it not closed?
Thanks in advance