ES安装教程详解 – 源码巴士

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<h3><a name="t0"></a>文章目录</h3>
<ul><li><ul><li><ul><li><ul><li><ul><li><a href="#0__1" target="_self">0. 安装前准备</a></li><li><a href="#2_ES_7" target="_self">2. 在官方网站下载ES</a></li><li><a href="#3_JDKJDK18_10" target="_self">3. 安装JDK(必须JDK1.8+)</a></li><li><a href="#4__14" target="_self">4. 配置环境变量</a></li><li><a href="#5__20" target="_self">5. 重载系统配置</a></li><li><a href="#6_elasticsearche_23" target="_self">6. 安装elasticsearche</a></li><li><a href="#7_elasticsearche_26" target="_self">7. elasticsearche的目录结构</a></li><li><a href="#8_es_33" target="_self">8. 运行es服务</a></li><li><a href="#9_root_39" target="_self">9. 不能以root用户身份启动</a></li><li><a href="#10_esES_56" target="_self">10. 登录es用户启动ES</a></li><li><a href="#11_ES_59" target="_self">11. 测试ES是否启动成功</a></li><li><a href="#12_ES_77" target="_self">12. 开启ES远程访问</a></li><li><a href="#13__81" target="_self">13. 启动时错误解决方案</a></li><li><a href="#14__114" target="_self">14. 关闭网络防火墙</a></li><li><a href="#15__118" target="_self">15. 外部浏览器访问即可</a></li></ul>
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<h5><a id="0__1"></a>0. 安装前准备</h5>
<pre class="prettyprint"><code class="has-numbering" οnclick="mdcp.copyCode(event)" style="position: unset;">   centos7 +
   java 8 +
   elastic 6.2.4+
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<h5><a id="2_ES_7"></a>2. 在官方网站下载ES</h5>
<pre class="prettyprint"><code class="has-numbering" οnclick="mdcp.copyCode(event)" style="position: unset;">wget http://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.4.1.tar.gz
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<h5><a id="3_JDKJDK18_10"></a>3. 安装JDK(必须JDK1.8+)</h5>
<pre class="prettyprint"><code class="has-numbering" οnclick="mdcp.copyCode(event)" style="position: unset;">rpm -ivh jdk-8u181-linux-x64.rpm
   /*注意:默认安装位置 /usr/java/jdk1.8.0_171-amd64*/
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<h5><a id="4__14"></a>4. 配置<a href="https://so.csdn.net/so/search?q=%E7%8E%AF%E5%A2%83%E5%8F%98%E9%87%8F&spm=1001.2101.3001.7020" target="_blank" class="hl hl-1" data-report-click="{"spm":"1001.2101.3001.7020","dest":"https://so.csdn.net/so/search?q=%E7%8E%AF%E5%A2%83%E5%8F%98%E9%87%8F&spm=1001.2101.3001.7020"}" data-tit="环境变量" data-pretit="环境变量">环境变量</a></h5>
<pre class="prettyprint"><code class="has-numbering" οnclick="mdcp.copyCode(event)" style="position: unset;">vim /etc/profile
在文件末尾加入:
   export JAVA_HOME=/usr/java/jdk1.8.0_171-amd64
   export PATH=$PATH:$JAVA_HOME/bin
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<h5><a id="5__20"></a>5. 重载系统配置</h5>
<pre class="prettyprint"><code class="has-numbering" οnclick="mdcp.copyCode(event)" style="position: unset;">   source /etc/profile
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<h5><a id="6_elasticsearche_23"></a>6. 安装elasticsearche</h5>
<pre class="prettyprint"><code class="has-numbering" οnclick="mdcp.copyCode(event)" style="position: unset;">   tar -zxvf elasticsearch-6.4.1.tar.gz
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<h5><a id="7_elasticsearche_26"></a>7. elasticsearche的目录结构</h5>
<pre class="prettyprint"><code class="has-numbering" οnclick="mdcp.copyCode(event)" style="position: unset;"> bin 可执行的二进制文件的目录
config     配置文件的目录
lib 运行时依赖的库
logs modules        运行时日志文件
plugins    es中提供的插件
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<h5><a id="8_es_33"></a>8. 运行es服务</h5>
<pre class="prettyprint"><code class="has-numbering" οnclick="mdcp.copyCode(event)" style="position: unset;">   在bin目录中执行 ./elasticsearch

   注意:root用户启动[2018-09-19T14:50:04,029][WARN ][o.e.b.ElasticsearchUncaughtExceptionHandler] [] uncaught exception in thread [main]org.elasticsearch.bootstrap.StartupException: java.lang.RuntimeException: can not run elasticsearch as root
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<h5><a id="9_root_39"></a>9. 不能以root用户身份启动</h5>
<pre class="prettyprint"><code class="has-numbering" οnclick="mdcp.copyCode(event)" style="position: unset;">a.在linux系统中创建新的组
   groupadd es

b.创建新的用户es并将es用户放入es组中

c.修改es用户密码
passwd es

d.将root用户解压的文件移动到es用户目录中
mv /root/elasticsearch-6.2.4 /home/es/

f.改变文件的所有者
   chown -R es:es 当前es的安装目录(这里是:/home/es/elasticsearch)
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<h5><a id="10_esES_56"></a>10. 登录es用户启动ES</h5>
<pre class="prettyprint"><code class="has-numbering" οnclick="mdcp.copyCode(event)" style="position: unset;">   ./elasticsearch 启动ES
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<h5><a id="11_ES_59"></a>11. 测试ES是否启动成功</h5>
<pre class="prettyprint"><code class="has-numbering" οnclick="mdcp.copyCode(event)" style="position: unset;">在命令终端中执行: curl http://localhost:9200 出现以下信息:
   {
"name" : "xQK1cwT",
"cluster_name" : "elasticsearch",
"cluster_uuid" : "t7IYk7LKQ0mXcyyrdFWpLg",
"version" : {
"number" : "6.2.4",
"build_hash" : "ccec39f",
"build_date" : "2018-04-12T20:37:28.497551Z",
"build_snapshot" : false,
"lucene_version" : "7.2.1",
"minimum_wire_compatibility_version" : "5.6.0",
"minimum_index_compatibility_version" : "5.0.0"
},
"tagline" : "You Know, for Search"
}
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<h5><a id="12_ES_77"></a>12. 开启ES远程访问</h5>
<pre class="prettyprint"><code class="has-numbering" οnclick="mdcp.copyCode(event)" style="position: unset;">   vim elasticsearch.yml 将原来network修改为以下配置:
   network.host: 0.0.0.0
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<h5><a id="13__81"></a>13. 启动时错误解决方案</h5>
<pre class="prettyprint"><code class="has-numbering" οnclick="mdcp.copyCode(event)" style="position: unset;">a.重新启动es出现如下错误
**ERROR: bootstrap checks failed[1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]**
解决方案:
# 切换到root用户修改
vim /etc/security/limits.conf
# 在最后面追加下面内容
* soft nofile 65536
* hard nofile 65536
* soft nproc 4096
* hard nproc 4096
# 退出重新登录检测配置是否生效:
ulimit -Hn
ulimit -Sn
ulimit -Hu
ulimit -Su

b.重新启动出现如下错误
**ERROR: max number of threads [3802] for user [chenyn] is too low,increase to at least [4096]**
解决方案:
#进入limits.d目录下修改配置文件。
vim /etc/security/limits.d/20-nproc.conf
# 修改为启动ES用户名 soft nproc 4096

c.重新启动出现如下错误
**ERROR: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]**
解决方案:
vim /etc/sysctl.conf
vm.max_map_count=655360
#执行以下命令生效：
sysctl -p
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<h5><a id="14__114"></a>14. 关闭网络防火墙</h5>
<pre class="prettyprint"><code class="has-numbering" οnclick="mdcp.copyCode(event)" style="position: unset;"> systemctl stop firewalld
systemctl disable firewalld
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<h5><a id="15__118"></a>15. 外部浏览器访问即可</h5>
<pre class="prettyprint"><code class="has-numbering" οnclick="mdcp.copyCode(event)" style="position: unset;">http://es的主机名:9200 出现如下信息说明安装成功:
{
"name" : "xQK1cwT",
"cluster_name" : "elasticsearch",
"cluster_uuid" : "t7IYk7LKQ0mXcyyrdFWpLg",
"version" : {
"number" : "6.2.4",
"build_hash" : "ccec39f",
"build_date" : "2018-04-12T20:37:28.497551Z",
"build_snapshot" : false,
"lucene_version" : "7.2.1",
"minimum_wire_compatibility_version" : "5.6.0",
"minimum_index_compatibility_version" : "5.0.0"
},
"tagline" : "You Know, for Search"
}
<div class="hljs-button {2}" data-title="复制" data-report-click="{"spm":"1001.2101.3001.4259"}"></div></code><ul class="pre-numbering" style=""><li style="color: rgb(153, 153, 153);">1</li><li style="color: rgb(153, 153, 153);">2</li><li style="color: rgb(153, 153, 153);">3</li><li style="color: rgb(153, 153, 153);">4</li><li style="color: rgb(153, 153, 153);">5</li><li style="color: rgb(153, 153, 153);">6</li><li style="color: rgb(153, 153, 153);">7</li><li style="color: rgb(153, 153, 153);">8</li><li style="color: rgb(153, 153, 153);">9</li><li style="color: rgb(153, 153, 153);">10</li><li style="color: rgb(153, 153, 153);">11</li><li style="color: rgb(153, 153, 153);">12</li><li style="color: rgb(153, 153, 153);">13</li><li style="color: rgb(153, 153, 153);">14</li><li style="color: rgb(153, 153, 153);">15</li><li style="color: rgb(153, 153, 153);">16</li></ul></pre>
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