修改elasticsearch.yml配置文件，允许外网访问。

vim config/elasticsearch.yml

增加

network.host: 0.0.0.0

启动失败，检查没有通过，报错

[2018-05-18T17:44:59,658][INFO ][o.e.b.BootstrapChecks ] [gFOuNlS] bound or publishing to a non-loopback address, enforcing bootstrap checks ERROR: [2] bootstrap checks failed [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]

[1]: max file descriptors [65535] for elasticsearch process is too low, increase to at least [65536]

切换到root用户

编辑 /etc/security/limits.conf，追加以下内容；

soft nofile 65536hard nofile 65536 此文件修改后需要重新登录用户，才会生效 [2]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

编辑 /etc/sysctl.conf，追加以下内容： vm.max_map_count=655360 保存后，执行： sysctl -p

重新启动，成功。 bin/elasticsearch -d