elasticsearch及head插件安装与配置

1. 环境软件版本说明

• 系统：ubuntu14.04.1
• JDK：1.8
• elasticsearch：5.5.2
• node：9.11.1
• elasticsearch：5.X

2. 环境软件下载说明

1). 软件地址

• 系统：这个嘛。。。
• JDK：非重点，请自行解决
• elasticsearch:https://www.elastic.co/downloads/elasticsearch
• elasticsearch-5.5.2:https://www.elastic.co/downloads/past-releases/elasticsearch-5-5-2
• node：https://nodejs.org/dist/v9.11.1/node-v9.11.1-linux-x64.tar.xz
• elasticsearch-head:https://github.com/mobz/elasticsearch-head/archive/master.zip

2). 软件下载

• 下载elasticsearch-5.5.2

# wget https://www.elastic.co/downloads/past-releases/elasticsearch-5-5-2

• 下载node
  `

# wget https://nodejs.org/dist/v9.11.1/node-v9.11.1-linux-x64.tar.xz

• 下载head插件

# wget https://github.com/mobz/elasticsearch-head/archive/master.zip

3. elasticsearch安装

elasticsearch解压即能用，当然为了更方便的使用，还是要简单配置一下。

1). 解压

`

# tar -zxvf elasticsearch-5.5.2.tar.gz

2). 配置

# cd elasticsearch-5.5.2/config/
# vim elasticsearch.yml

network.host: 0.0.0.0
# 跨域访问设置
http.cors.enabled: true
http.cors.allow-origin: "*"

3). 配置elasticsearch启动用户

在启动elasticsearch之前还要创建一个非root用户，elasticsearch不允许使用root用户启动。当使用非root用户时，要配置一下用户的文件打开数和用户最大处理数。
会出现如下错误：

ERROR: bootstrap checks failed
max file descriptors [4096] for elasticsearch process likely too low, increase to at least [65536]
max number of threads [1024] for user [lishang] likely too low, increase to at least [2048]

ERROR: bootstrap checks failed max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

解决centos系统执行一下如下脚本

#!/bin/bash
echo "* soft nofile 65536" >> /etc/security/limits.conf
echo "* hard nofile 65536" >> /etc/security/limits.conf
echo "* soft memlock unlimited" >> /etc/security/limits.conf
echo "* hard memlock unlimited" >> /etc/security/limits.conf
echo "vm.max_map_count = 262144" >> /etc/sysctl.conf
echo "* soft nproc 4096" >> /etc/security/limits.d/90-nproc.conf
echo "root soft nproc unlimited" >> /etc/security/limits.d/90-nproc.conf
sysctl -p
ulimit -l unlimited

解决ubuntu系统

(1). 在 /etc/security/limits.conf 中添加

* hard nofile 2037581
* soft nofile 2037581
root hard nofile 2037581
root soft nofile 2037581

(2). 在 /etc/pam.d/su 添加

session required pam_limits.so

(3)在 /etc/pam.d/common-session 添加

session required pam_limits.so

(4). 在 /etc/sysctl.conf 中添加

vm.max_map_count = 262144

4). 启动

• 前台启动

# bin/elasticsearch

• 后台启动

# bin/elasticsearch -d

• 方式 一查看端口是否启动

# lsof -i:9200
COMMAND   PID  USER   FD   TYPE   DEVICE SIZE/OFF NODE NAME
java    24738 kevin  117u  IPv4 32165101      0t0  TCP *:wap-wsp (LISTEN)

• 方式二用curl
  返回如下信息说明启动功能。

# curl localhost:9200
{
  "name" : "kevin-node-01",
  "cluster_name" : "kevin-dev",
  "cluster_uuid" : "Sq62mKiaQiGGYOQR-Dmq6Q",
  "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"
}

4. elasticsearch-head插件安装

elasticsearch依赖node环境，所以要想安装head插件就要先安装node环境。

1). node环境安装

* 解压

先把tar.xz解压出tar.gz，然后再解压tar.gz文件

# tar -xvf node-v9.11.1-linux-x64.tar.xz
# tar -zxvf node-v9.11.1-linux-x64.tar.gz

设置软连接

# ln -s /opt/node-v9.11.1/bin/npm /usr/local/bin/ 
# ln -s /opt/node-v9.11.1/bin/node /usr/local/bin/

检测是否安装成功，如果不成功重新开启一个session对话再试一下。

# node -v
# npm -v

2). head安装

* 解压

# unzip master.zip

配置

• vim Gruntfile.js
  添加 hostname: '0.0.0.0'

 90                 connect: {
 91                         server: {
 92                                 options: {
 93                                         port: 9100,
 94                                         base: '.',
 95                                         keepalive: true,
 96                                         hostname:'0.0.0.0'
 97                                 }       

安装

进入到node的根目录下

# cd /opt/elasticsearch-head-master/
npm install

我的报如下错误

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! phantomjs-prebuilt@2.1.16 install: `node install.js`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the phantomjs-prebuilt@2.1.16 install script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /root/.npm/_logs/2018-08-04T02_49_32_733Z-debug.log
root@lee-ubuntu:/opt/elasticsearch-head-master# 
root@lee-ubuntu:/opt/elasticsearch-head-master# 
root@lee-ubuntu:/opt/elasticsearch-head-master# 
root@lee-ubuntu:/opt/elasticsearch-head-master# npm install phantomjs-prebuilt@2.1.14--ignore-scripts

npm ERR! code ETARGET
npm ERR! notarget No matching version found for phantomjs-prebuilt@2.1.14--ignore-scripts
npm ERR! notarget In most cases you or one of your dependencies are requesting
npm ERR! notarget a package version that doesn't exist.

npm ERR! A complete log of this run can be found in:
npm ERR!     /root/.npm/_logs/2018-08-04T02_51_00_390Z-debug.log

解决：把不能安装的script路过去，要注意你报错信息中@后台的版本号

npm install phantomjs-prebuilt@2.1.16 --ignore-scripts

启动head

• 启动

npm run start

• 然后就可以访问head插件了，head插件的端口默认是9100。
  

• 如果head不能识别es的地址，就去head中配置一下es的地址信息。
  

vim _site/app.js 把4354行的localhost改ip地址即可。

4342 (function( app, i18n ) {
4343 
4344         var ui = app.ns("ui");
4345         var services = app.ns("services");
4346 
4347         app.App = ui.AbstractWidget.extend({
4348                 defaults: {
4349                         base_uri: null
4350                 },
4351                 init: function(parent) {
4352                         this._super();
4353                         this.prefs = services.Preferences.instance();
4354                         this.base_uri = this.config.base_uri || this.prefs.get("app-base_uri") || "http://192.168.161.103:9200";
4355                         if( this.base_uri.charAt( this.base_uri.length - 1 ) !== "/" ) {
4356                                 // XHR request fails if the URL is not ending with a "/"
4357                                 this.base_uri += "/";
4358                         }
4359                         if( this.config.auth_user ) {
4360                                 var credentials = window.btoa( this.config.auth_user + ":" + this.config.auth_password );
4361                                 $.ajaxSetup({
4362                                         headers: {
4363                                                 "Authorization": "Basic " + credentials
4364                                         }
4365                                 });
4366                         }
4367                         this.cluster = new services.Cluster({ base_uri: this.base_uri });