"version" : {
"number" : "6.6.2",
...
"minimum_wire_compatibility_version" : "5.6.0",
"minimum_index_compatibility_version" : "5.0.0"
}
Need to set password for Elasticsearch. Try:
Goto /etc/elasticsearch/elasticsearch.yml and add
xpack.security.enabled: true
service elasticsearch restart
Goto /usr/share/elasticsearch and
bin/elasticsearch-setup-passwords interactive
Output:Unexpected response code [404] from calling GET http://127.0.0.1:9200/_xpack/security/_authenticate?pretty It doesn't look like the X-Pack security feature is available on this Elasticsearch node. Please check if you have installed a license that allows access to X-Pack Security feature. ERROR: X-Pack Security is not available.
I guess, x-pack basic feature was added in 6.8, need to confirm and if that's the case then it explains the error as you are using 6.6, will find a link and update the exact version when x-pack basic version was introduced.
Just checked and looks like it was available in 6.3 according to opening of x-pack