1. Installation
Follow the official installation instructions on opensearch.org. Example for Debian:
https://opensearch.org/docs/latest/install-and-configure/install-opensearch/debian/
2. Plugin installation
You also need the plugin ingest-attachment. Install it as described here:
https://opensearch.org/docs/latest/install-and-configure/plugins/
3. Next step
If you have completed all steps successfully, you can proceed to the next step "Python".