Prometheus exporter for the metrics available in Logstash since version 5.0.
Usage
go get -u github.com/BonnierNews/logstash_exporter
cd $GOPATH/src/github.com/BonnierNews/logstash_exporter
make
./logstash_exporter -exporter.bind_address :1234 -logstash.endpoint http://localhost:1235