elasticsearch5.0 安装流程

#elasticsearch安装流程

# by coco

# 2016-11-09

1. 下载：官网地址：

wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.0.0.tar.gz

https://www.elastic.co/guide/en/elasticsearch/reference/5.0/mapping-all-field.html //官方wiki文档

1.去官网下载jdk:

http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

tar -xvf elasticsearch-5.0.0.tar.gz

cd elasticsearch-5.0.0

确保系统已经安装好jdk1.8.0_73以上，操作系统centos6以上。

一、elasticsearch安装配置

1.官网下载源码包

https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.0.0.tar.gz

2.解压安装

useradd elasticsearch

tar xf elasticsearch-5.0.0.tar.gz -C /usr/local

cd /usr/local

ln -sv elasticsearch-5.0.0 elasticsearch

mkdir -pv /data/elasticsearch/{data,logs}

chown -R elasticsearch.elasticsearch /data/elasticsearch
 
mkdir -p /usr/local/elasticsearch/plugins
mkdir -p /usr/local/elasticsearch/config/scripts
 
3.修改配置文件
 




cat /usr/local/elasticsearch/config/elasticsearch.yml


# 换个集群的名字，免得跟别人的集群混在一起
cluster.name: wlt-es5.0-application   
#
 换个节点名字
node.name: node-1
     

path.data: /data/elasticsearch/data

path.logs: /data/elasticsearch/logs
 


# 修改一下ES的监听地址，这样别的机器也可以访问
network.host: 0.0.0.0


# 默认的就好
http.port: 9200
# 增加新的参数，这样head插件可以访问es

#http.cors.enabled: true

#http.cors.allow-origin: “*"
 
4.修改系统参数
 




cat /etc/security/limits.conf
*               soft    nproc           65536
*               hard    nproc           65536
*               soft    nofile          65536
*               hard    nofile          65536

cat /etc/sysctl.conf
vm.max_map_count= 262144
sysctl -p



5.启动服务
su - elasticsearch -c "/usr/local/elasticsearch/bin/elasticsearch &”
su - elasticsearch -c "/usr/local/elasticsearch/bin/elasticsearch >/dev/null 2>&1 &”
 
浏览器访问：http://192.168.8.98:9200/
head插件的安装
在5.0版本中不支持直接安装head插件，需要启动一个服务
1.下载插件安装
Git
git 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
2.修改配置
 
由于head的代码还是2.6版本的，直接执行有很多限制，比如无法跨机器访问。因此需要用户修改两个地方： 
 
connect: {
    server: {
        options: {
            port: 9100,
            hostname: '*',
            base: '.',
            keepalive: true
        }
    }
} 修改连接地址：修改head的连接地址:

this.base_uri = this.config.base_uri || this.prefs.get("app-base_uri") || "http://localhost:9200";
 

this.base_uri = this.config.base_uri || this.prefs.get("app-base_uri") || "http://192.168.8.98:9200";
3.启动服务
/usr/local/elasticsearch-head/node_modules/grunt/bin/gruntserver
浏览器访问：http://192.168.8.98:9100
 
 
 
 
 
错误一：
ERROR: bootstrap checks failed
max file descriptors [65535] for elasticsearch process likely too low, increase to at least [65536]
解决办法：

cat /proc/sys/fs/file-max? If it's too low, execute sysctl -w fs.file-max=65536