Elasticsearch集群安装部署

1.系统环境说明

目前使用的系统环境为Centos Linux release 7.4.1708 (core),linux版本的内核Linux version 3.10.0-693.2.2e17.x86_64.

机器地址：172.31.178.92，172.31.178.93

2.安装配置JDK 1.8

2.1 jdk下载并解压缩

[root@UDC-1 jdk]# pwd
/opt/jdk
[root@UDC-1 jdk]# tar -zxvf jdk-8u151-linux-x64.tar.gz

2.2 编辑环境变量

[[email protected]1 jdk]# vim /etc/profile

export JAVA_HOME=/opt/jdk/jdk1.8
export JRE_HOME=$JAVA_HOME/jre
export CLASSPATH=$JAVA_HOME/lib/tool.jar:$JAVA_HOME/lib/dt.jar
export PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin

[[email protected]1 jdk]# source /etc/profile

2.3 查看JDK版本

[root@UDC-1 jdk]# java -version
java version "1.8.0_151"
Java(TM) SE Runtime Environment (build 1.8.0_151-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.151-b12, mixed mode)

3.Elasticsearch下载安装

3.1 下载、解压包

官网下载地址

使用wget下载

[[email protected]UDC-1 data]# pwd
/data
[[email protected]UDC-1 data]# wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.3.2.tar.gz
[[email protected]UDC-1 data]# tar -zxvf elasticsearch-6.3.2.tar.gz
[[email protected]UDC-1 data]# rm -rf elasticsearch-6.3.2.tar.gz 
[[email protected]UDC-1 data]# mv elasticsearch-6.3.2/ elasticsearch

3.2 创建用户、授权、切换用户

从5.0开始，Elasticsearch安全级别提高了，不允许采用root账户启动，所以添加一个用户。

[root@UDC-1 data]# useradd es
[root@UDC-1 data]# passwd es
Changing password for user es.
New password: 
BAD PASSWORD: The password is shorter than 8 characters
Retype new password: 
passwd: all authentication tokens updated successfully.
[root@UDC-1 data]# usermod -G es es
[root@UDC-1 data]# chown -R es:es elasticsearch/
[root@UDC-1 data]# su es

3.3 Elasticsearch 配置

• 修改elasticsearch.yml

  [[email protected]1 elasticsearch]$ vim config/elasticsearch.yml
  
  cluster.name: my-application
  node.name: node-1
  network.host: 0.0.0.0
  http.port: 9200
  discovery.zen.ping.unicast.hosts: ["172.31.178.92", "172.31.178.93"]
  discovery.zen.minimum_master_nodes: 1
  
  
  #末尾添加以下三行是解决跨域问题，为后面安装head插件做准备
  
  http.cors.enabled: true
  http.cors.allow-origin: "*"
  http.cors.allow-credentials: true

• 修改/etc/sysctl.conf

  切换到root用户

  [[email protected] elasticsearch]# vim /etc/sysctl.conf

  添加如下内容

  vm.max_map_count=262144

  用命令sysctl -p生效

  [[email protected] elasticsearch]# sysctl -p

  ​

• 修改文件/etc/security/limits.conf

  [[email protected] elasticsearch]# vim /etc/security/limits.conf

  添加如下内容

  * soft nofile 65536
  * hard nofile 65536
  
  * soft nproc 2048
  * soft nproc 4096

• ElasticSearch启动

  -d是后台启动

  [[email protected] elasticsearch]$ bin/elasticsearch -d

• 查询

  http://47.104.191.52:9200/

• ElasticSearch停止

  [es@UDC-1 elasticsearch-head-master]$ jps
  32592 Jps
  32385 Elasticsearch
  [es@UDC-1 elasticsearch-head-master]$ kill -9 32385

  ​

  两台机器均做上面的操作，唯一注意配置文件中node.name修改node-2 即可

  然后分别启动两台台机器 ./bin/elasticsearch -d 查看配置路径的日志信息，启动成功！

3.4 安装ik分词

每台机器安装ik后重启

[[email protected] elasticsearch]$ ./bin/elasticsearch-plugin install https://github.com/medcl/elasticsearch-analysis-ik/releases/download/v6.3.2/elasticsearch-analysis-ik-6.3.2.zip

注意：6.3.2为对应的Elasticsearch版本号。

3.5 head插件安装

我使用的是ES6.3版本，head插件可以单独部署，并远程连接ES服务器，通过REST API来处理交互。只需要在一台机器上安装head插件即可。

3.5.1 下载head插件并解压

[es@UDC-1 elasticsearch]$ wget  https://github.com/mobz/elasticsearch-head/archive/master.zip
[es@UDC-1 elasticsearch]$ unzip master.zip

3.5.2 安装node

切换root用，安装node到/data目录

[root@UDC-1 data]# pwd
/data
[root@UDC-1 data]# wget https://npm.taobao.org/mirrors/node/latest-v4.x/node-v4.4.7-linux-x64.tar.gz
[root@UDC-1 data]# tar -zxvf node-v4.4.7-linux-x64.tar.gz
[root@UDC-1 data]# rm -rf node-v4.4.7-linux-x64.tar.gz
[root@UDC-1 data]# mv node-v4.4.7-linux-x64/ node
[root@UDC-1 data]# vim /etc/profile

export NODE_HOME=/data/node
export PATH=$PATH:$NODE_HOME/bin
export NODE_PATH=$NODE_HOME/lib/node_modules

[root@UDC-1 data]# source /etc/profile

3.5.3 安装grunt

grunt是基于Node.js的项目构建工具，可以进行打包压缩、测试、执行等等的工作，head插件就是通过grunt启动.

[[email protected]UDC-1 data]$ cd /data/elasticsearch/elasticsearch-head-master/
[[email protected]UDC-1 elasticsearch-head-master]# npm install -g grunt-cli #执行后会在/data/node/lib生产node_modules文件夹

查看是否安装成功

[root@UDC-1 elasticsearch-head-master]# grunt -version
grunt-cli v1.3.0

3.5.4 修改head插件源码

• 修改服务器监听地址:Gruntfile.js。增加hostname:’*’

[[email protected] elasticsearch-head-master]# vim Gruntfile.js

connect: {
                        server: {
                                options: {
                                        port: 9100,
                                        base: '.',
                                        keepalive: true,
                                        hostname:'*'
                                }
                        }

• 修改连接地址：_site/app.js

  将this.base_uri = this.config.base_uri || this.prefs.get("app-base_uri") || "http://localhost:9200";中的localhost换成47.104.191.52(使用公网ip)

  [root@UDC-1 elasticsearch-head-master]# vim _site/app.js
  
  (function( app, i18n ) {
  
        var ui = app.ns("ui");
        var services = app.ns("services");
        app.App = ui.AbstractWidget.extend({
                defaults: {
                        base_uri: null
                },
                init: function(parent) {
                        this._super();
                        this.prefs = services.Preferences.instance();
                        this.base_uri = this.config.base_uri || this.prefs.get("app-base_uri") || "http://172.31.178.92:9200";
                        if( this.base_uri.charAt( this.base_uri.length - 1 ) !== "/" ) {
                                // XHR request fails if the URL is not ending with a "/"
                                this.base_uri += "/";
  

3.5.5 安装head依赖包

[root@UDC-1 elasticsearch-head-master]# su es
[es@UDC-1 elasticsearch-head-master]$ npm install

3.5.5 运行head

先启动es集群，在/data/elasticsearch/elasticsearch-head-master/下启动grunt

[es@UDC-1 elasticsearch-head-master]$ grunt server

去浏览器查看地址：http://47.104.191.52:9100/