1、下載elasticsearch6.2.1

wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.2.1.tar.gz

2、解壓安裝

3、啟動

因為es為防止遠程執行一些腳本，所以啟動需要建立一個新的grouop 和user

直接進入bin目錄啟動

可能出現的問題，

[1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65536]

vim /etc/security/limits.conf，在文件最後加上

* soft nproc  6000

* hard nproc  6000

* soft nofile 65536

* hard nofile 65536

[2]: max number of threads [1024] for user [es] is too low, increase to at least [4096]

vim /etc/security/limits.d/90-nproc.conf

*   soft    nproc     6000

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

vim /etc/sysctl.conf ，在文件最後面加上

vm.max_map_count=655360

【ELK】之Centos6.9_x64安裝elasticsearch6.2.1