Failed to connect to elasticsearch from logstash

Elastic Stack Logstash
1

I have ELB: elasticsearch-data.dev-ore, and there are 3 easlticsearch-nodes behind it.

20:58:33 dev-ore-logstash-i-bef580a6 root ~ > telnet elasticsearch-data.dev-ore  9200
Trying 10.0.19.78...
Connected to elasticsearch-data.dev-ore 
Escape character is '^]'.
^]
HTTP/1.0 404 Not Found
content-type: application/json; charset=UTF-8
content-length: 367

{"error":{"root_cause":[{"type":"index_not_found_exception","reason":"no such index","index_uuid":"_na_","resource.type":"index_or_alias","resource.id":"bad-request","index":"bad-request"}],"type":"index_not_found_exception","reason":"no such index","index_uuid":"_na_","resource.type":"index_or_alias","resource.id":"bad-request","index":"bad-request"},"status":404}Connection closed by foreign host.

It said it was connected to at the first and then closed it due to index_not_found_exception.

I am confused why?

2

Why are you using telnet instead of e.g. curl to talk to ES? Judging by what you've pasted above you're not placing a valid HTTP request at all so I'm not sure what you expect would happen.

3

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