I have an Elastic Cloud instance running Elasticsearch/Kibana 6.5 and I'm trying to use the new Management > Logstash > Pipelines panel to define a pipeline that runs on a schedule to update a field on each document in one of my indexes.
Now, I'm struggling to understand how to write this pipeline to begin with as I can't find any useful examples to build off of, but right now I can't even tell if this pipeline is running or having errors, etc. I can see that it was created but that's it. I can't figure out how to test it or run it or see what might be wrong.
Simply put, I don't really know where to start with using logstash pipelines. Could anyone possibly point me to a good resource for learning to write pipelines and ideally how to interact with them via Kibana?
Sorry if this isn't the best place to ask this -- I was on the fence about whether to ask here or in the logstash forum.