Kibana not starting on server1

Elastic Community and Ecosystem Elastic Training
2

To follow up:

I querried elastic via:

curl -X GET "http://localhost:9200"
curl -X GET "http://server1:9200"
curl -X GET "http://theExtraLongAmazonWebInstanceHostname:9200"

and opened the amazon instance in chrome on :9200.

Result: All of them return the elastic standard message ("You know, for search").

I also tried setting elasticsearch.hosts to the relevant hosts in kibana.yml.
Same result every time.