报错：
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xa68ac3]
这是因为elasticSearch的 net host有问题，
回去看elasticSearch的启动是否有问题
这是某位的启动日志
[root@izj6c9ucnwnm673q0fiv6cz zhiliao_Adm]# su elasticsearch -c "/usr/local/elasticsearch/bin/elasticsearch " sticsearch/bin/elasticsearch "
[2018-11-15T14:30:05,617][INFO ][o.e.n.Node ] [node-1] initializin g ...
[2018-11-15T14:30:05,687][INFO ][o.e.e.NodeEnvironment ] [node-1] using [1] d ata paths, mounts [[/ (rootfs)]], net usable_space [26.6gb], net total_space [39 .2gb], types [rootfs]
[2018-11-15T14:30:05,687][INFO ][o.e.e.NodeEnvironment ] [node-1] heap size [ 123.7mb], compressed ordinary object pointers [true]
[2018-11-15T14:30:05,688][INFO ][o.e.n.Node ] [node-1] node name [ node-1], node ID [sTsm0-keRceqB-EL-0Majw]
[2018-11-15T14:30:05,688][INFO ][o.e.n.Node ] [node-1] version[6.4 .3], pid[26650], build[default/tar/fe40335/2018-10-30T23:17:19.084789Z], OS[Linu x/3.10.0-693.2.2.el7.x86_64/amd64], JVM[Oracle Corporation/Java HotSpot(TM) 64-B it Server VM/1.8.0_66/25.66-b17]
[2018-11-15T14:30:05,689][INFO ][o.e.n.Node ] [node-1] JVM argumen ts [-Xms256m, -Xmx64m, -Xms128m, -Xmx128m, -XX:+UseConcMarkSweepGC, -XX:CMSIniti atingOccupancyFraction=75, -XX:+UseCMSInitiatingOccupancyOnly, -XX:+AlwaysPreTou ch, -Xss1m, -Djava.awt.headless=true, -Dfile.encoding=UTF-8, -Djna.nosys=true, - XX:-OmitStackTraceInFastThrow, -Dio.netty.noUnsafe=true, -Dio.netty.noKeySetOpti mization=true, -Dio.netty.recycler.maxCapacityPerThread=0, -Dlog4j.shutdownHookE nabled=false, -Dlog4j2.disable.jmx=true, -Djava.io.tmpdir=/tmp/elasticsearch.z0v Apbx5, -XX:+HeapDumpOnOutOfMemoryError, -XX:HeapDumpPath=data, -XX:ErrorFile=log s/hs_err_pid%p.log, -XX:+PrintGCDetails, -XX:+PrintGCDateStamps, -XX:+PrintTenur ingDistribution, -XX:+PrintGCApplicationStoppedTime, -Xloggc:logs/gc.log, -XX:+U seGCLogFileRotation, -XX:NumberOfGCLogFiles=32, -XX:GCLogFileSize=64m, -Des.path .home=/usr/local/elasticsearch, -Des.path.conf=/usr/local/elasticsearch/config, -Des.distribution.flavor=default, -Des.distribution.type=tar]
[2018-11-15T14:30:07,856][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [aggs-matrix-stats]
[2018-11-15T14:30:07,856][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [analysis-common]
[2018-11-15T14:30:07,856][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [ingest-common]
[2018-11-15T14:30:07,856][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [lang-expression]
[2018-11-15T14:30:07,856][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [lang-mustache]
[2018-11-15T14:30:07,857][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [lang-painless]
[2018-11-15T14:30:07,857][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [mapper-extras]
[2018-11-15T14:30:07,857][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [parent-join]
[2018-11-15T14:30:07,857][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [percolator]
[2018-11-15T14:30:07,857][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [rank-eval]
[2018-11-15T14:30:07,857][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [reindex]
[2018-11-15T14:30:07,857][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [repository-url]
[2018-11-15T14:30:07,857][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [transport-netty4]
[2018-11-15T14:30:07,857][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [tribe]
[2018-11-15T14:30:07,857][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [x-pack-core]
[2018-11-15T14:30:07,857][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [x-pack-deprecation]
[2018-11-15T14:30:07,857][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [x-pack-graph]
[2018-11-15T14:30:07,857][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [x-pack-logstash]
[2018-11-15T14:30:07,858][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [x-pack-ml]
[2018-11-15T14:30:07,858][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [x-pack-monitoring]
[2018-11-15T14:30:07,858][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [x-pack-rollup]
[2018-11-15T14:30:07,858][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [x-pack-security]
[2018-11-15T14:30:07,858][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [x-pack-sql]
[2018-11-15T14:30:07,858][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [x-pack-upgrade]
[2018-11-15T14:30:07,858][INFO ][o.e.p.PluginsService ] [node-1] loaded modu le [x-pack-watcher]
[2018-11-15T14:30:07,858][INFO ][o.e.p.PluginsService ] [node-1] no plugins loaded
[2018-11-15T14:30:11,590][INFO ][o.e.x.s.a.s.FileRolesStore] [node-1] parsed [0] roles from file [/usr/local/elasticsearch/config/roles.yml]
[2018-11-15T14:30:12,020][INFO ][o.e.x.m.j.p.l.CppLogMessageHandler] [controller /26705] [Main.cc@109] controller (64 bit): Version 6.4.3 (Build 7a0781676dd492) Copyright (c) 2018 Elasticsearch BV
[2018-11-15T14:30:12,362][DEBUG][o.e.a.ActionModule ] Using REST wrapper f rom plugin org.elasticsearch.xpack.security.Security
[2018-11-15T14:30:12,598][INFO ][o.e.d.DiscoveryModule ] [node-1] using disco very type [zen]
[2018-11-15T14:30:13,387][INFO ][o.e.n.Node ] [node-1] initialized
[2018-11-15T14:30:13,387][INFO ][o.e.n.Node ] [node-1] starting .. .
[2018-11-15T14:30:13,620][WARN ][o.e.b.ElasticsearchUncaughtExceptionHandler] [n ode-1] uncaught exception in thread [main]
org.elasticsearch.bootstrap.StartupException: BindTransportException[Failed to b ind to [9300-9400]]; nested: BindException[Cannot assign requested address];
at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:140 ) ~[elasticsearch-6.4.3.jar:6.4.3]
at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java: 127) ~[elasticsearch-6.4.3.jar:6.4.3]
at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwar eCommand.java:86) ~[elasticsearch-6.4.3.jar:6.4.3]
at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:1 24) ~[elasticsearch-cli-6.4.3.jar:6.4.3]
at org.elasticsearch.cli.Command.main(Command.java:90) ~[elasticsearch-c li-6.4.3.jar:6.4.3]
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:93) ~[elasticsearch-6.4.3.jar:6.4.3]
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:86) ~[elasticsearch-6.4.3.jar:6.4.3]
Caused by: org.elasticsearch.transport.BindTransportException: Failed to bind to [9300-9400]
at org.elasticsearch.transport.TcpTransport.bindToPort(TcpTransport.java :821) ~[elasticsearch-6.4.3.jar:6.4.3]
at org.elasticsearch.transport.TcpTransport.bindServer(TcpTransport.java :786) ~[elasticsearch-6.4.3.jar:6.4.3]
at org.elasticsearch.transport.netty4.Netty4Transport.doStart(Netty4Tran sport.java:134) ~[?:?]
at org.elasticsearch.xpack.core.security.transport.netty4.SecurityNetty4 Transport.doStart(SecurityNetty4Transport.java:87) ~[?:?]
at org.elasticsearch.xpack.security.transport.netty4.SecurityNetty4Serve rTransport.doStart(SecurityNetty4ServerTransport.java:41) ~[?:?]
at org.elasticsearch.common.component.AbstractLifecycleComponent.start(A bstractLifecycleComponent.java:66) ~[elasticsearch-6.4.3.jar:6.4.3]
at org.elasticsearch.transport.TransportService.doStart(TransportService .java:217) ~[elasticsearch-6.4.3.jar:6.4.3]
at org.elasticsearch.common.component.AbstractLifecycleComponent.start(A bstractLifecycleComponent.java:66) ~[elasticsearch-6.4.3.jar:6.4.3]
at org.elasticsearch.node.Node.start(Node.java:667) ~[elasticsearch-6.4. 3.jar:6.4.3]
at org.elasticsearch.bootstrap.Bootstrap.start(Bootstrap.java:265) ~[ela sticsearch-6.4.3.jar:6.4.3]
at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:335) ~[elas ticsearch-6.4.3.jar:6.4.3]
at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:136 ) ~[elasticsearch-6.4.3.jar:6.4.3]
... 6 more
Caused by: java.net.BindException: Cannot assign requested address
at sun.nio.ch.Net.bind0(Native Method) ~[?:?]
at sun.nio.ch.Net.bind(Net.java:433) ~[?:?]
at sun.nio.ch.Net.bind(Net.java:425) ~[?:?]
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java: 223) ~[?:?]
at io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSo cketChannel.java:128) ~[?:?]
at io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel. java:558) ~[?:?]
at io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChann elPipeline.java:1283) ~[?:?]
at io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractCha nnelHandlerContext.java:501) ~[?:?]
at io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHa ndlerContext.java:486) ~[?:?]
at io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.j ava:989) ~[?:?]
at io.netty.channel.AbstractChannel.bind(AbstractChannel.java:254) ~[?:? ]
at io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:365 ) ~[?:?]
at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEv entExecutor.java:163) ~[?:?]
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(Single ThreadEventExecutor.java:403) ~[?:?]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:463) ~[?:?]
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThread EventExecutor.java:858) ~[?:?]
at java.lang.Thread.run(Thread.java:745) [?:1.8.0_66]
[2018-11-15T14:30:14,428][INFO ][o.e.n.Node ] [node-1] stopping .. .
[2018-11-15T14:30:14,432][INFO ][o.e.n.Node ] [node-1] stopped
[2018-11-15T14:30:14,432][INFO ][o.e.n.Node ] [node-1] closing ...
[2018-11-15T14:30:14,464][INFO ][o.e.n.Node ] [node-1] closed
uncaught exception in thread [main]
org.elasticsearch.bootstrap.StartupException: BindTransportException[Failed to b ind to [9300-9400]]; nested: BindException[Cannot assign requested address];
https://elasticsearch.cn/question/1755
修改一下 elasticsearch.yml配置信息 文件的 network.host
改成（下面的ip改成你的连接ip，如果是本地不需要改动）
network.host: 127.0.0.1
重新启动elasticSearch