Elasticsearch学习笔记（三）Elasticsearch5.1.2安装

不念不忘少年蓝@ 2022-07-11 12:03 229阅读 0赞

### 文章目录 ###

*  Elasticsearch系列文章目录
 *   *  下载
     *  解压
     *  修改jdk版本
     *  启动服务
     *   *  遇到的异常解决
     *  安装head插件

# Elasticsearch系列文章目录 #

*  [Elasticsearch学习笔记（一）Elasticsearch2.4.2安装][Elasticsearch_Elasticsearch2.4.2]
 *  [Elasticsearch学习笔记（二）Elasticsearch入门][Elasticsearch_Elasticsearch]
 *  [Elasticsearch学习笔记（三）Elasticsearch5.1.2安装][Elasticsearch_Elasticsearch5.1.2]
 *  [Elasticsearch学习笔记（四）版本控制\[并发安全\]][Elasticsearch]
 *  [Elasticsearch学习笔记（五）批量操作][Elasticsearch 1]
 *  [Elasticsearch学习笔记（六）Elasticsearch分布式集群值helloWord][Elasticsearch_Elasticsearch_helloWord]
 *  [Elasticsearch学习笔记（七）Elasticsearch分布式集群工作原理简介][Elasticsearch_Elasticsearch 1]

## 下载 ##

首先到官网下载最新的5.1.2的安装包，下载地址：[https://www.elastic.co/products/elasticsearch][https_www.elastic.co_products_elasticsearch]

## 解压 ##

tar -zxvf elasticsearch-5.1.2.tar.gz

## 修改jdk版本 ##

注意，elasticsearch需要使用jdk8，但是由于我对Linux还跑着其他的程序，所以要在.sh启动shell脚本中指定JDK的版本  
修改`elasticsearch-5.1.2/bin/elasticsearch`文件，在设置java变量前添加jdk1.8：

export JAVA_HOME=/letv/soft/elk/jdk1.8.0_121
    export PATH=$JAVA_HOME/bin:$PATH
    
    
    if [ -x "$JAVA_HOME/bin/java" ]; then
        JAVA="/letv/soft/elk/jdk1.8.0_121/bin/java"
    else
        JAVA=`which java`
    fi

## 启动服务 ##

修改配置文件  
`network.host: 10.104.29.13`指定IP  
启动服务  
`./elasticsearch &`

### 遇到的异常解决 ###

*  此时启动服务会发现报错：`max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]`

于是我临时提高了vm.max\_map\_count的大小  
\***此操作需要root权限**

[root@localhost ~]# sysctl -w vm.max_map_count=262144

或者永久性修改

[root@localhost ~]# cat /etc/sysctl.conf | grep -v "vm.max_map_count" > /tmp/system_sysctl.conf
    [root@localhost ~]# echo "vm.max_map_count=262144" >> /tmp/system_sysctl.conf
    [root@localhost ~]# mv /tmp/system_sysctl.conf /etc/sysctl.conf
    mv：是否覆盖"/etc/sysctl.conf"？ y
    [root@localhost ~]# cat /etc/sysctl.conf
    # System default settings live in /usr/lib/sysctl.d/00-system.conf.
    # To override those settings, enter new settings here, or in an /etc/sysctl.d/<name>.conf file
    #
    # For more information, see sysctl.conf(5) and sysctl.d(5).
    vm.max_map_count=262144
    [root@localhost ~]# sysctl -p
    vm.max_map_count = 262144

以上修改参考 [centos7虚拟机安装elasticsearch5.0.x-安装篇][centos7_elasticsearch5.0.x-]

服务启动以后，在浏览器中访问`http://10.104.29.13:9200/`结果如下：

{
        name: "Dsx3Ih1",
        cluster_name: "elasticsearch",
        cluster_uuid: "ro0IVlJITm-Kq-8ZfPwEtQ",
        version: {
            number: "5.1.2",
            build_hash: "c8c4c16",
            build_date: "2017-01-11T20:18:39.146Z",
            build_snapshot: false,
            lucene_version: "6.3.0"
        },
        tagline: "You Know, for Search"
    }

## 安装head插件 ##

> 真搞不懂，elasticsearch升级以后不能一行命令安装head插件，老版本的是可以的。

安装倒也简单，只需要一下三个命令：

clone git://github.com/mobz/elasticsearch-head.git
    cd elasticsearch-head
    npm install

在elasticsearch-head目录下node\_modules/grunt下如果没有grunt二进制程序，需要执行

cd elasticsearch-head
    npm install grunt --save

然后修改配置：

修改`elasticsearch-head`下`Gruntfile.js`文件，添加`hostname`字段

connect: {
        server: {
            options: {
                hostname: '10.104.29.13',
                port: 9100,
                base: '.',
                keepalive: true
            }
        }
    }

**修改Elasticsearch配置文件**

编辑elasticsearch-5.1.2/config/elasticsearch.yml,加入以下内容：

http.cors.enabled: true
    http.cors.allow-origin: "*"

进入`elasticsearch-head/node_modules/grunt/bin`目录，执行`./grunt server`命令启动head插件服务。  
浏览器中访问`http://10.104.29.13:9100/`即可

> 后台启动head(head插件是个nodejs应用)服务：  
> `nohup bin/grunt server &`

![这里写图片描述][SouthEast]

参考 [elasticsearch5.0及head插件安装][elasticsearch5.0_head]

[Elasticsearch_Elasticsearch2.4.2]: https://blog.csdn.net/liubenlong007/article/details/54695168
[Elasticsearch_Elasticsearch]: https://blog.csdn.net/liubenlong007/article/details/54695167
[Elasticsearch_Elasticsearch5.1.2]: https://blog.csdn.net/liubenlong007/article/details/54708107
[Elasticsearch]: https://blog.csdn.net/liubenlong007/article/details/54729129
[Elasticsearch 1]: https://blog.csdn.net/liubenlong007/article/details/54729136
[Elasticsearch_Elasticsearch_helloWord]: https://blog.csdn.net/liubenlong007/article/details/54729148
[Elasticsearch_Elasticsearch 1]: https://blog.csdn.net/liubenlong007/article/details/54729164
[https_www.elastic.co_products_elasticsearch]: https://www.elastic.co/products/elasticsearch
[centos7_elasticsearch5.0.x-]: http://blog.csdn.net/u012371450/article/details/51776505
[SouthEast]: /images/20220711/920446ed56a5462ab41fdcb84459b587.png
[elasticsearch5.0_head]: http://blog.csdn.net/iiiiher/article/details/53381051