How do I calculate the number of documents ingested per day?
Thread 157245 suggested it's possible to get the number of index requests per second, but the thread did not give any API call(s) for getting this number, and I'm not sure that an "index" request is the same thing as an "ingest" event.
I have read and re-read the API Reference on elastic.co, but the closest thing I can find to the number of documents ingested per day is "ingest.total.count", a number in the results for GET _nodes/stats: "The total number of document ingested during the lifetime of this node" (https://www.elastic.co/guide/en/elasticsearch/reference/6.8/cluster-nodes-stats.html). Should I just divide this by the number of days which constitute the node's lifetime and call the resulting dividend my "ingest rate"?