Can't hit some endpoints in ES 5.6.2 externally

Elastic Stack Elasticsearch
1

I have bizarre problem after installing ES 5.6.2 on AWS EC2 instance for the first time.

Request: http://34.207.177.92:9200/_cluster
Response: {"error":{"root_cause":[{"type":"illegal_argument_exception","reason":"No endpoint or operation is available at [_cluster]"}],"type":"illegal_argument_exception","reason":"No endpoint or operation is available at [_cluster]"},"status":400}

When I'm calling ES from EC2 instance itself I'm getting valid JSON data

Interestingly some requests like http://34.207.177.92:9200/_count working externally with no problems

Spent couple hours searching in Google and still can't figure out what makes _cluster endpoint disappear for external clients.

2

Are you using elasticsearch by AWS service by any chance?

3

Reason being they have a modified Elasticsearch which removes access to a number of core APIs like this one.

4

I'm not using AWS ElasticSearch service

5

Is there any link describing those changes?
Thanks!

6

I don't know sorry.

Do you have an IAM role that is protecting this cluster?

7

I'm using standard ECS AMI and role.
Another observation:

I can get valid result for http://ip:9200/index_name/_count
{"count":1,"_shards":{"total":1,"successful":1,"skipped":0,"failed":0}}

But http://ip:9200/index_name/_search?q=whatever failes because ES doesn't return anything at all
Browser says The connection to the website was reset.
Error Code: INET_E_DOWNLOAD_FAILURE

I can successfully curl both requests from any ES node though
So it's only affecting access from outside of the cluster

8

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