I am reading through https://www.elastic.co/what-is/open-x-pack but I don't see ILM specifically mentioned. Just wanted to confirm whether it is too new a feature and it came out after or if it is actually not available in the free X-Pack
Actually, what is the free X-Pack anyway in the context of "Docker" because when I was building https://github.com/trajano/elk-swarm I was under the impression that X-Pack was a paid feature so I tried to disable it.
I would recommend looking at the subscriptions page for a breakdown of features by license level. ILM was probably released after the page you linked to was written, but is part of the free Basic license.
I'm actually confused between the "open-source" vs "basic" (forever free) plan. Like how do we get the "forever free" or is it automatically included in the Docker images?
Whether you download a Elasticseach directly or use a docker image, there are two distributions. The OSS distribution contains only open-source code and does not include any other components. The default distribution comes bundled with X-Pack, and the license level you are using determines the feature set available. The default here is the free Basic license, but you can upgrade that to a commercial license without having to change distribution/software.
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