elasticsearch 6下载地址
https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.0.1-linux-x86_64.tar.gz
https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.1.1.tar.gz
https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.0.1-linux-x86_64.tar.gz
https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.1.1.tar.gz