You can get some really detailed stats about Logstash pipelines via the HTTP API. See the docs for more!
$ curl -XGET 'localhost:9600/_node/stats/pipelines?pretty'
{
"host" : "logstash-msk-679b6b8dd9-4pd2h",
"version" : "7.4.0",
"http_address" : "0.0.0.0:9600",
"id" : "ba41dded-1a12-41e9-988f-03bd4eae9d4a",
"name" : "logstash-msk-679b6b8dd9-4pd2h",