一、下载
wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.5.4.tar.gz
二、解压
tar -zxvf elasticsearch-6.5.4.tar.gz
三、创建新用户并附文件权限(root用户无法启动)
useradd suxiaodong
chown -R suxiaodong /usr/local/elasticsearch
后续操作均切换suxiaodong用户进行，su suxiaodong
四、修改远程访问配置(默认只允许本机访问)
修改 Elasticsearch 安装目录中的config/elasticsearch.yml文件，去掉network.host的注释，将它的值改成0.0.0.0
五、启动
./bin/elasticsearch
后台方式启动： ./bin/elasticsearch -d
访问http://47.94.145.253:9200/即可验证
六、常见问题
1、调整jvm内存参数:
vi config/jvm.options
-Xms128m
-Xmx128m
2、max virtual memory areas vm.max_map_count [65530] likely too low, increase to at least [262144]
解决：执行下面的命令：
sudo sysctl -w vm.max_map_count=262144
3、
[1]: max file descriptors [65535] for elasticsearch process is too low, increase to at least [65536]
[2]: max number of threads [3882] for user [suxiaodong] is too low, increase to at least [4096]
解决：
sudo vim /etc/security/limits.conf
在limits.conf最下方加入下面4行
suxiaodong hard nofile 65536
suxiaodong soft nofile 65536
suxiaodong hard nproc 5000
suxiaodong soft nproc 5000
重启服务器
七、head工具安装：
github地址：https://github.com/mobz/elasticsearch-head
推荐chrome插件方式安装
