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安装Elasticsearch

安装包下载

  Elasticsearch官网: https://www.elastic.co/products/elasticsearch
  5.2.2的版本, jdk要1.8及以上
  提前准备node.js

Elasticsearch部署

1)解压elasticsearch-5.2.2.tar.gz到/opt/module目录下
[liucw@hadoop102]$ tar -zxvf elasticsearch-5.2.2.tar.gz -C /opt/module

2)在/opt/module/elasticsearch-5.2.2路径下创建data和logs文件夹
$ mkdir data
$ mkdir logs

3)修改配置文件/opt/module/elasticsearch-5.2.2/config/elasticsearch.yml

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# ---------------------------------- Cluster -----------------------------------
cluster.name: my-application # 如果是集群,名称一样就行
# ------------------------------------ Node ------------------------------------
node.name: node-102
# ----------------------------------- Paths ------------------------------------
path.data: /opt/module/elasticsearch-5.2.2/data
path.logs: /opt/module/elasticsearch-5.2.2/logs
# ----------------------------------- Memory -----------------------------------
bootstrap.memory_lock: false
bootstrap.system_call_filter: false
# ---------------------------------- Network -----------------------------------
network.host: 192.168.1.102
# --------------------------------- Discovery ----------------------------------
discovery.zen.ping.unicast.hosts: [“hadoop102"] # 如果是集群这里是多个

  1)cluster.name:如果要配置集群需要两个节点上的elasticsearch配置的cluster.name相同,都启动可以自动组成集群,这里如果不改cluster.name则默认是cluster.name=my-application,
  2)nodename随意取但是集群内的各节点不能相同
  3)修改后的每行前面不能有空格,修改后的“:”后面必须有一个空格

5)配置linux系统环境(参考:http://blog.csdn.net/satiling/article/details/59697916)
  1)切换到root用户,编辑limits.conf 添加类似如下内容
$ vi /etc/security/limits.conf

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添加如下内容:
* soft nofile 65536
* hard nofile 131072
* soft nproc 2048
* hard nproc 4096

  2)切换到root用户,进入limits.d目录下修改配置文件。有可以是20-nproc.conf
$ vi /etc/security/limits.d/90-nproc.conf

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修改如下内容:
* soft nproc 1024
#修改为
* soft nproc 2048

  3)切换到root用户修改配置sysctl.conf

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$ vi /etc/sysctl.conf 
添加下面配置:
vm.max_map_count=655360
并执行命令:
$ sysctl -p

然后,重新启动elasticsearch,即可启动成功。

6)启动集群
[liucw@hadoop102 elasticsearch-5.2.2]$ bin/elasticsearch -d

7)测试集群

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[liucw@hadoop102 hadoop]$ curl http://hadoop102:9200
{
"name" : "node-102",
"cluster_name" : "my-application",
"cluster_uuid" : "1S6WmYX2RRm9hl4MSZPo4g",
"version" : {
"number" : "5.2.2",
"build_hash" : "f9d9b74",
"build_date" : "2017-02-24T17:26:45.835Z",
"build_snapshot" : false,
"lucene_version" : "6.4.1"
},
"tagline" : "You Know, for Search"
}

8)停止集群
  kill -9 进程号

Elasticsearch head插件安装

elasticsearch-head将是一款专门针对于elasticsearch的客户端工具

1)下载插件
https://github.com/mobz/elasticsearch-head
elasticsearch-head-master.zip

2)nodejs官网下载安装包
https://nodejs.org/dist/
node-v6.9.2-linux-x64.tar.xz

3)将elasticsearch-head-master.zip和node-v6.9.2-linux-x64.tar.xz都导入到linux的/opt/software目录。

4)安装nodejs
[liucw@hadoop102 software]$ tar -zxvf node-v6.9.2-linux-x64.tar.gz -C /opt/module/

5)配置nodejs环境变量
[root@hadoop102 software]# vi /etc/profile
export NODE_HOME=/opt/module/node-v6.9.2-linux-x64
export PATH=$PATH:$NODE_HOME/bin
[root@hadoop102 software]# source /etc/profile

6)查看node和npm版本
[root@hadoop102 software]# node -v
v6.9.2
[root@hadoop102 software]# npm -v
3.10.9

7)解压head插件到/opt/module目录下
[liucw@hadoop102 software]$ unzip elasticsearch-head-master.zip -d /opt/module/

8)查看当前head插件目录下有无node_modules/grunt目录:
没有:执行命令创建:
[liucw@hadoop102 elasticsearch-head-master]$ npm install grunt –save

9)安装head插件:
[liucw@hadoop102 elasticsearch-head-master]$ npm install -g cnpm –registry=https://registry.npm.taobao.org

10)安装grunt:
[liucw@hadoop102 elasticsearch-head-master]$ npm install -g grunt-cli

11)编辑Gruntfile.js
[liucw@hadoop102 elasticsearch-head-master]$ vim Gruntfile.js

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文件93行(93 shift + g)添加hostname:’0.0.0.0’
options: {
hostname:'0.0.0.0',
port: 9100,
base: '.',
keepalive: true
}

12)检查head根目录下是否存在base文件夹
没有:将 _site下的base文件夹及其内容复制到head根目录下
[liucw@hadoop102 elasticsearch-head-master]$ mkdir base
[liucw@hadoop102 _site]$ cp base/* ../base/

13)启动grunt server:
// -d 后台启动,可以不用
[liucw@hadoop102 elasticsearch-head-master]$ grunt server -d
Running “connect:server” (connect) task
[D] Task source: /opt/module/elasticsearch-head-master/node_modules/grunt-contrib-connect/tasks/connect.js
Waiting forever…
Started connect web server on http://localhost:9100

如果提示grunt的模块没有安装:
Local Npm module “grunt-contrib-clean” not found. Is it installed?
Local Npm module “grunt-contrib-concat” not found. Is it installed?
Local Npm module “grunt-contrib-watch” not found. Is it installed?
Local Npm module “grunt-contrib-connect” not found. Is it installed?
Local Npm module “grunt-contrib-copy” not found. Is it installed?
Local Npm module “grunt-contrib-jasmine” not found. Is it installed?
Warning: Task “connect:server” not found. Use –force to continue.
执行以下命令:
npm install grunt-contrib-clean -registry=https://registry.npm.taobao.org
npm install grunt-contrib-concat -registry=https://registry.npm.taobao.org
npm install grunt-contrib-watch -registry=https://registry.npm.taobao.org
npm install grunt-contrib-connect -registry=https://registry.npm.taobao.org
npm install grunt-contrib-copy -registry=https://registry.npm.taobao.org
npm install grunt-contrib-jasmine -registry=https://registry.npm.taobao.org
最后一个模块可能安装不成功,但是不影响使用。

14)再启动一次,浏览器访问head插件:
[liucw@hadoop102 elasticsearch-head-master]$ grunt server
$ http://hadoop102:9100

15)启动集群插件后发现集群未连接

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在/opt/module/elasticsearch-5.2.2/config路径下修改配置文件elasticsearch.yml,在文件末尾增加
[liucw@hadoop102 config]$ pwd
/opt/module/elasticsearch-5.2.2/config
[liucw@hadoop102 config]$ vi elasticsearch.yml
# ---------------------------------- Various -----------------------------------
http.cors.enabled: true
http.cors.allow-origin: "*"
再重新启动
[liucw@hadoop102 elasticsearch-5.2.2]$ bin/elasticsearch。
[liucw@hadoop102 elasticsearch-head-master]$ grunt server

16)关闭插件服务
ctrl+c
[liucw@hadoop102 elasticsearch-head-master]$ netstat -lntp | grep 9100
tcp 0 0 192.168.1.102:9100 0.0.0.0:* LISTEN 6070/grunt

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