1.安装JDK（1.8）

2.上传解压Elasticsearch-5.4.3

mkdir /bigdata
mkdir /data
tar -zxvf elasticsearch-5.4.3.tar.gz -C /bigdata

3.创建一个普通用户，然后将对于的目录修改为普通用户的所属用户和所属组

useradd wang
passwd wang 123456 123456
chown -R wang:123456 /bigdata
chown -R wang:123456 /data
登录wang的用户 whoami

4.修改配置文件config/elasticsearch.yml

network.host: 192.168.52.206
vi /bigdata/elasticsearch-5.4.3/config/elasticsearch.yml

5.启动ES，发现报错

bin/elasticsearch -d 后台启动

出现错误

[1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]
[2]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

用户最大可创建文件数太小

sudo vi /etc/security/limits.conf

• soft nofile 65536
• hard nofile 65536

查看可打开文件数量

ulimit -Hn

最大虚拟内存太小

sudo vi /etc/sysctl.conf
vm.max_map_count=262144

查看虚拟内存的大小

sudo sysctl -p

6.重启linux

shutdown -r now

7.通过浏览器访问ES

192.168.52.206:9200

8.集群安装

vi /bigdata/elasticsearch-5.4.3/config/elasticsearch.yml
cluster.name: my-es
node.name:hadoop7
path.data: /data/es/data
path/logs: /data/es/logs

discovery.zen.ping.unicast.hosts: ["hadoop6", "hadoop7","hadoop8"]

9.拷贝到其他集群机器

scp elasticsearch.yml hadoop7/8:$PWD