This is incredibly user-hostile, and if you read this expecting this is an open-source release, consider yourself clickbaited.<p>Want to contribute to the open-source version of Elasticsearch? Want to ensure you're running an open-source database without running a custom EULA past your legal department?<p>Well, make sure that after 6.3 is released, you don't accidentally download the default distribution, or browse the official Github repository, or clone from Github, as all of those will have components subject to an as-yet-unreleased, non-OSI-approved EULA (see the final paragraph in <a href="https://www.elastic.co/products/x-pack/open" rel="nofollow">https://www.elastic.co/products/x-pack/open</a>), which may have clauses that trigger liability to Elastic if you accidentally flip a switch or look at the wrong thing. (I am not a lawyer, this is not legal advice, but I shouldn't have to be to know if I can use software freely, and I can only guess worst-case scenarios because the terms aren't released.)<p>If Elastic were truly committed to transparency, they would release the terms of their new EULA immediately, provide a way to access the head of the open-source portion of the repository without accepting the EULA, and make it clear what the pricing ramifications are if one opts into certain flags or reads certain files in a commercial capacity. (Pricing requires a custom quote, but a quick Google search suggests that the lowest tier in which REST and node-to-node communications are encrypted begins in the tens of thousands of dollars - not the kind of thing you want to take lightly.)<p>Now more than ever, it's important that projects like <a href="https://github.com/floragunncom/search-guard" rel="nofollow">https://github.com/floragunncom/search-guard</a> , a free and open-source (Apache 2.0) alternative to some of these X-Pack components, are supported, and that the word is spread around them. (EDIT: Yes, they have commercial components, but those are in a separate repository, so you avoid any entanglements. Why isn't Elastic doing the same?)<p>And hopefully, if Elastic doesn't maintain a fully-OSS repo, someone will create and maintain a friendly fully-OSS fork that can be combined with third-party software to carry on the legacy of this otherwise excellent database in the right way.