ElasticSearch在linux安装(单机版)

新建用户

elasticsearch 5.x以后版本不能使用root用户启动
添加apps用户

groupadd apps
useradd -g apps apps
chmod u+w /etc/sudoers
vim /etc/sudoers

设置apps用户可以通过sudo执行root命令

chmod u-w /etc/sudoers

下载elasticsearch安装包

后台启动

如果不希望后台启动 把-d去掉即可

/home/apps/elasticsearch-6.2.2/bin/elasticsearch -d

查看启动日志

cat /home/apps/elasticsearch-6.2.2/log/elasticsearch.log

错误1

org.elasticsearch.transport.BindTransportException: Failed to bind to [9300-9400]
	at org.elasticsearch.transport.TcpTransport.bindToPort(TcpTransport.java:794) ~[elasticsearch-6.2.2.jar:6.2.2]
	at org.elasticsearch.transport.TcpTransport.bindServer(TcpTransport.java:759) ~[elasticsearch-6.2.2.jar:6.2.2]
	at org.elasticsearch.transport.netty4.Netty4Transport.doStart(Netty4Transport.java:135) ~[?:?]
	at org.elasticsearch.common.component.AbstractLifecycleComponent.start(AbstractLifecycleComponent.java:66) ~[elasticsearch-6.2.2.jar:6.2.2]
	at org.elasticsearch.transport.TransportService.doStart(TransportService.java:213) ~[elasticsearch-6.2.2.jar:6.2.2]
	at org.elasticsearch.common.component.AbstractLifecycleComponent.start(AbstractLifecycleComponent.java:66) ~[elasticsearch-6.2.2.jar:6.2.2]
	at org.elasticsearch.node.Node.start(Node.java:623) ~[elasticsearch-6.2.2.jar:6.2.2]
	at org.elasticsearch.bootstrap.Bootstrap.start(Bootstrap.java:262) ~[elasticsearch-6.2.2.jar:6.2.2]
	at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:332) [elasticsearch-6.2.2.jar:6.2.2]
	at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:121) [elasticsearch-6.2.2.jar:6.2.2]
	at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:112) [elasticsearch-6.2.2.jar:6.2.2]
	at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) [elasticsearch-6.2.2.jar:6.2.2]
	at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124) [elasticsearch-cli-6.2.2.jar:6.2.2]
	at org.elasticsearch.cli.Command.main(Command.java:90) [elasticsearch-cli-6.2.2.jar:6.2.2]
	at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:92) [elasticsearch-6.2.2.jar:6.2.2]
	at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:85) [elasticsearch-6.2.2.jar:6.2.2]
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(NioServerSocketChannel.java:128) ~[?:?]
	at io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:558) ~[?:?]
	at io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1283) ~[?:?]
	at io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:501) ~[?:?]
	at io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:486) ~[?:?]
	at io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java: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(AbstractEventExecutor.java:163) ~[?:?]
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:403) ~[?:?]
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:463) ~[?:?]
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) ~[?:?]
	at java.lang.Thread.run(Thread.java:748) ~[?:1.8.0_191]

network.host如果是云服务器需要填写 内网ip 如果使用公网ip就会报错

错误2

java.lang.IllegalStateException: failed to obtain node locks, tried [[/home/apps/elasticsearch-6.2.2/data/elasticsearch]] with lock id [0]; maybe these locations are not writable or multiple nodes were started without increasing [node.max_local_storage_nodes] (was [1])?

启动出错的进程没有彻底释放，ps -ef | grep elasticsearch, kill - 9 pid

错误3

[2020-06-02T08:43:40,247][ERROR][o.e.b.Bootstrap          ] [Ocgu9cj] node validation exception
[1] bootstrap checks failed
[1]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

elasticsearch用户拥有的内存权限太小，至少需要263144字节
查看用户的拥有内存权限大小

sudo sysctl -a | grep vm.max_map_count

sudo vim /etc/sysctl.conf

执行以下命令使配置生效

sudo sysctl -p

重新执行查询验证

sudo sysctl -a | grep vm.max_map_count

启动成功

安装中文分词

/home/apps/elasticsearch-6.2.2/bin/elasticsearch-plugin install https://github.com/medcl/elasticsearch-analysis-ik/releases/download/v6.2.2/elasticsearch-analysis-ik-6.2.2.zip