Looks like I have this to investigate now because a warning is appearing on my admin dashboard. Whatever the problem is seems to affect Elasticsearch 7.17.23 and Mastodon 4.4.2 , because this never appeared on Mastodon 4.3.x and the suggested command only returns this error:
[400] {"error":{"root_cause":[{"type":"illegal_argument_exception","reason":"unknown setting [index.analysis] please check that any required plugins are installed, or check the breaking changes documentation for removed settings"}],"type":"illegal_argument_exception","reason":"unknown setting [index.analysis] please check that any required plugins are installed, or check the breaking changes documentation for removed settings"},"status":400}
#MastoAdmin