Elasticsearch 5.x安装

node1	elasticsearch
node2	elasticsearch
node3	elasticsearch

前期准备

• JDK1.8
• 修改/etc/security/limits.conf

elasticsearch hard nofile
elasticsearch soft nofile 

1.下载并安装

wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.2.1.rpm
rpm -ivh elasticsearch-5.2.1.rpm

2.修改配置文件/etc/elasticsearch/elasticsearch.yml

cluster.name: test    #集群名称
node.name: es-node1    #（节点名称）每个节点不同
path.data:  /dfs/elasticsearch　　#可以指定多个
path.logs:  /dfs/elasticsearch/logs
network.host: 0.0.0.0
discovery.seed_hosts: ["IP1","IP2","IP3"]
http.cors.enabled: true
http.cors.allow-origin: "*"
bootstrap.memory_lock: false
bootstrap.system_call_filter: false
discovery.zen.ping.unicast.hosts: ["node1", "node2", "node3"]

如果调整内存，修改/etc/elasticsearch/jvm.options文件，两个值需要一致。

　　-Xms2g
　　-Xmx2g

3.创建数据和日志目录

mkdir -p  /dfs/elasticsearch/logs
chown elasticsearch.elasticsearch -R /dfs/elasticsearch

4.修改/etc/init.d/elasticsearch

定义JAVA_HOME
export JAVA_HOME=/path/java（按照实际路径修改）

启动，如果有错误查看日志排错

/etc/init.d/elasticsearch start

5.安装elasticsearch-head，5.x版本elasticsearch-head已经不能作为插件安装了

1.可以使用chrome安装elasticsearch-head插件
https://chrome.google.com/webstore/detail/elasticsearch-head/ffmkiejjmecolpfloofpjologoblkegm

2.使用python启动
git clone git://github.com/mobz/elasticsearch-head.git
cd elasticsearch-head
python -m SimpleHTTPServer
会监听在8000端口，然后访问IP: