We fully support both Elasticsearch and OpenSearch, each with their own specifics. For OpenSearch we support Ultrawarm / searchable snapshots, kNN vector search, and so on.
It's absolutely complimentry. Pulse is an official Datadog partner and has an integration to Datadog. Pulse will send Datadog events and alerts it generates, enriching the Datadog experience.
Great question! we created Pulse with exactly this in mind - supporting Elasticsearch (and OpenSearch) running anywhere. You don't need the cluster to be exposed publicly. Integrating with Pulse is just about installing a lightweight and secure agent, which transmits metrics (only metrics, never data) to our service.
Hi! I'm the founder of Pulse. This is a great question! although it's a very old version, we do see it in the wild every so often and indeed, Pulse supports 2.x as well.
The reason why we didn't include it is because it's not free; it actually requires the high-end licensing (ECE). We do have an alternative solution coming up soon as a replacement.