# Logtstash updating fron 7.9 to 7.16.2

**URL:** https://discuss.elastic.co/t/logtstash-updating-fron-7-9-to-7-16-2/298453
**Category:** Logstash
**Created:** [February 28, 2022, 10:54pm UTC](https://discuss.elastic.co/t/logtstash-updating-fron-7-9-to-7-16-2/298453 "2022-02-28T22:54:19Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)
#### Post date: [February 28, 2022, 11:17pm UTC](https://discuss.elastic.co/t/logtstash-updating-fron-7-9-to-7-16-2/298453/2 "2022-02-28T23:17:45Z")

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What version of Elasticsearch are you trying to connect to?

I do not know of a written description of what is compatible with what. The code is [here](https://github.com/logstash-plugins/logstash-output-elasticsearch/blob/fe0a24135a6f18f64415a116f09bc5418b83f15e/lib/logstash/outputs/elasticsearch/http_client/pool.rb#L279) (that if/elsif/else block is returning false, which can happen in several ways). It hits the Elasticsearch root URL, parses the JSON it gets back, and checks some of the values.

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