Editing Data Collection Methods

(notes -- work in progress)

Getting data for OpenSearch/ElasticSearch is a matter of:

* Identifying the data to be gathered
* Finding a way to surface and collect that data
* Send the data to the ElasticSearch/OpenSearch cluster

=== Elastic Products ===
The elastic suite of applications includes tools that are usable for both the Elastic tools and the open source alternatives (such as OpenSearch):

*Logstash - aggregate and process data through pipelines before sending to OpenSearch
*Metricbeat - system data from Linux/Windows systems
*Filebeat - capturing text from logfiles
**capture OpenSearch logs into OpenSearch for better visibility and analysis
**capture syslogs from the log server (pro6) for all systems

=== Prometheus Exporters: ===
[https://prometheus.io/ Prometheus] implements a pull method vs the push method used by the Elastic products.  Metricbeat serves as an interface between the two methods -- one of its modules can read prometheus format metrics -- either produced natively by applications or by specific exporter applications.  A list of exporters from the prometheus website can be found at https://prometheus.io/docs/instrumenting/exporters/

* A general-purpose exporter is [https://github.com/prometheus/node_exporter node_exporter] -- it can export a large range of metrics across many areas of system operations.

=== Custom Tools ===

* NVIDIA - simple script to get GPU data