i installed elasticsearch 5.5.0 tar.gz then i configured it i have no error when i run it but the web page doesn't appear when enter the IP adress and the port 9200
this is the result when i run it
[2017-07-26T18:23:57,749][INFO ][o.e.n.Node ] [] initializing ...
[2017-07-26T18:23:57,854][INFO ][o.e.e.NodeEnvironment ] [Q6UfQmI] using [1] data paths, mounts [[/ (rootfs)]], net usable_space [97.7gb], net total_space [99.9gb], spins? [unknown], types [rootfs]
[2017-07-26T18:23:57,855][INFO ][o.e.e.NodeEnvironment ] [Q6UfQmI] heap size [1.9gb], compressed ordinary object pointers [true]
[2017-07-26T18:23:57,858][INFO ][o.e.n.Node ] node name [Q6UfQmI] derived from node ID [Q6UfQmI7QXyICP7MSOw3tw]; set [node.name] to override
[2017-07-26T18:23:57,858][INFO ][o.e.n.Node ] version[5.5.0], pid[23463], build[260387d/2017-06-30T23:16:05.735Z], OS[Linux/3.10.0-514.el7.x86_64/amd64], JVM[Oracle Corporation/Java HotSpot(TM) 64-Bit Server VM/1.8.0_131/25.131-b11]
[2017-07-26T18:23:57,859][INFO ][o.e.n.Node ] JVM arguments [-Xms2g, -Xmx2g, -XX:+UseConcMarkSweepGC, -XX:CMSInitiatingOccupancyFraction=75, -XX:+UseCMSInitiatingOccupancyOnly, -XX:+DisableExplicitGC, -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=/opt/elasticsearch-5.5.0]
[2017-07-26T18:23:59,445][INFO ][o.e.p.PluginsService ] [Q6UfQmI] loaded module [aggs-matrix-stats]
[2017-07-26T18:23:59,445][INFO ][o.e.p.PluginsService ] [Q6UfQmI] loaded module [ingest-common]
[2017-07-26T18:23:59,445][INFO ][o.e.p.PluginsService ] [Q6UfQmI] loaded module [lang-expression]
[2017-07-26T18:23:59,446][INFO ][o.e.p.PluginsService ] [Q6UfQmI] loaded module [lang-groovy]
[2017-07-26T18:23:59,446][INFO ][o.e.p.PluginsService ] [Q6UfQmI] loaded module [lang-mustache]
[2017-07-26T18:23:59,446][INFO ][o.e.p.PluginsService ] [Q6UfQmI] loaded module [lang-painless]
[2017-07-26T18:23:59,446][INFO ][o.e.p.PluginsService ] [Q6UfQmI] loaded module [parent-join]
[2017-07-26T18:23:59,446][INFO ][o.e.p.PluginsService ] [Q6UfQmI] loaded module [percolator]
[2017-07-26T18:23:59,447][INFO ][o.e.p.PluginsService ] [Q6UfQmI] loaded module [reindex]
[2017-07-26T18:23:59,447][INFO ][o.e.p.PluginsService ] [Q6UfQmI] loaded module [transport-netty3]
[2017-07-26T18:23:59,447][INFO ][o.e.p.PluginsService ] [Q6UfQmI] loaded module [transport-netty4]
[2017-07-26T18:23:59,448][INFO ][o.e.p.PluginsService ] [Q6UfQmI] no plugins loaded
[2017-07-26T18:24:01,941][INFO ][o.e.d.DiscoveryModule ] [Q6UfQmI] using discovery type [zen]
[2017-07-26T18:24:02,899][INFO ][o.e.n.Node ] initialized
[2017-07-26T18:24:02,899][INFO ][o.e.n.Node ] [Q6UfQmI] starting ...
[2017-07-26T18:24:03,222][INFO ][o.e.t.TransportService ] [Q6UfQmI] publish_address {197.12.8.83:9300}, bound_addresses {197.12.8.83:9300}
[2017-07-26T18:24:03,243][INFO ][o.e.b.BootstrapChecks ] [Q6UfQmI] bound or publishing to a non-loopback or non-link-local address, enforcing bootstrap checks
[2017-07-26T18:24:06,357][INFO ][o.e.c.s.ClusterService ] [Q6UfQmI] new_master {Q6UfQmI}{Q6UfQmI7QXyICP7MSOw3tw}{74c5Nf06Quy6QxJzg9YpRQ}, reason: zen-disco-elected-as-master ([0] nodes joined)
[2017-07-26T18:24:06,404][INFO ][o.e.h.n.Netty4HttpServerTransport] [Q6UfQmI] publish_address }, bound_addresses
[2017-07-26T18:24:06,405][INFO ][o.e.n.Node ] [Q6UfQmI] started
[2017-07-26T18:24:06,417][INFO ][o.e.g.GatewayService ] [Q6UfQmI] recovered [0] indices into cluster_state
is there a possibility that an other instance is running ???
please any help !!!!