# Upgrade OpenJDK

**URL:** <https://discuss.elastic.co/t/upgrade-openjdk/315659>\
**Category:** Elasticsearch\
**Created:** [October 3, 2022, 7:17am UTC](https://discuss.elastic.co/t/upgrade-openjdk/315659 "2022-10-03T07:17:59Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![hugo.barbosa](https://avatars.discourse-cdn.com/v4/letter/h/53a042/32.png) [@hugo.barbosa](https://discuss.elastic.co/u/hugo.barbosa)\
**Post date:** [October 3, 2022, 7:17am UTC](https://discuss.elastic.co/t/upgrade-openjdk/315659/1 "2022-10-03T07:17:59Z")

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Dear all

I would like to upgrade or check the current OpenJDK Java version on my three ubuntu nodes.  
Asking the dev tools about my version, it says 18  
 ![image](https://us1.discourse-cdn.com/elastic/original/3X/3/0/3009b3942054e21e8aa4bdacd6800b0e2a36a87b.png)

But asking on the ubuntu servers commandline, I got version 11. I found the JDK folder in the elasticsearch home directory. But it confuses me why I got two different answers here.  
And I would need to know how to upgrade it correctly. I tested it on the test server but did not succeed, as the Website became unusable (but I got the correct version with the command "java -version"). So if there is a quick guideline here, I would appreciate it.

BR

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [October 4, 2022, 5:18am UTC](https://discuss.elastic.co/t/upgrade-openjdk/315659/2 "2022-10-04T05:18:21Z")

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Please don't post pictures of text, logs or code. They are difficult to read, impossible to search and replicate (if it's code), and some people may not be even able to see them 🙂

What version of Elasticsearch do you have installed?

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**Author:** ![hugo.barbosa](https://avatars.discourse-cdn.com/v4/letter/h/53a042/32.png) [@hugo.barbosa](https://discuss.elastic.co/u/hugo.barbosa)\
**Post date:** [October 17, 2022, 6:23am UTC](https://discuss.elastic.co/t/upgrade-openjdk/315659/3 "2022-10-17T06:23:27Z")

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Hi Warkolm. It is 8.2.3. Java version OpenJDK is 18.0.1.1. I am also aware of the compability matrix regarding compatible versions  
.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [November 14, 2022, 6:24am UTC](https://discuss.elastic.co/t/upgrade-openjdk/315659/4 "2022-11-14T06:24:09Z")

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