elasticsearch docker安裝

必看：

https://www.elastic.co/guide/en/elasticsearch/reference/current/docker.html

http://www.xiaozhugrape.com/2018/03/29/elasticsearch%E6%9C%AC%E5%9C%B0%E5%AE%89%E8%A3%85docker%E5%AE%89%E8%A3%85/

1. 在配置階段： 

- "ES_JAVA_OPTS=-Xms2g -Xmx2g"
           

2.在虛拟機内:  docker exec -it  {CONTAINER ID} bash

• vm.max_map_count 報錯

The 

vm.max_map_count

 setting should be set permanently in /etc/sysctl.conf:

$ grep vm.max_map_count /etc/sysctl.conf
vm.max_map_count=262144      

To apply the setting on a live system type: 

sysctl -w vm.max_map_count=262144

但留意可能報錯： setting key "vm.max_map_count": Read-only file system

原因解釋(中文):   https://blog.csdn.net/Gamer_gyt/article/details/52960941

https://github.com/spujadas/elk-docker/issues/99

參考：

https://github.com/elastic/elasticsearch/issues/25067