Modify the elasticsearch.yml configuration file to allow extranet access.
vim config/elasticsearch.yml
# Add
network.host: 0.0.0.0
Failed to start, check did not pass, error reported
[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]
Edit /etc/security/limits.conf and append the following.
* soft nofile 65536
* hard nofile 65536
You need to re-login to the user after modifying this file for it to take effect
[2]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
Edit /etc/sysctl.conf and append the following.
vm.max_map_count=655360
After saving, execute.
sysctl -p
Restart and done!
bin/elasticsearch