We currently use several additional plugins (e.g. mapper-murmur3, analysis-icu and others). Are there instructions on how to install these, preferably by pulling in a zip file?
I would start here: OpenSearch plugins - OpenSearch documentation
If you run into specific problems, post them here!
I had already been there and it didn’t provide the information I needed. From digging around elsewhere though I found that I could source the zip files to do what I needed, e.g.
I’ve submitted a PR to update that documentation page to make this clearer. Add new plugins to installation page by jcgraybill · Pull Request #238 · opensearch-project/documentation-website · GitHub