NoNodeAvailableException[None of the configured nodes are available: []]

Elastic Stack Elasticsearch
1

I am using es6.2.4 and appeared this problem when I try to connect es server by transportClient;

2

Hard to say without knowing what you are doing exactly.

Anyway, you should better use the Rest Client instead. Transport Client will be deprecated and removed at some point.

3

ok,I will try to use the rest client, thanks