專案地址：
https://github.com/BonnierNews/logstash_exporter
build外掛：

[[email protected] ~]$ yum install -y go
[[email protected] ~]$ cd go/src/github.com/BonnierNews/logstash_exporter
[[email protected] ~]$ make
[[email protected] ~]$ ls -al logstash_exporter
[[email protected] ~]$ cp
 
 logstash_exporter /usr/local/bin/logstash_exporter
[[email protected] ~]$ /usr/local/bin/logstash_exporter  --help
usage: logstash_exporter [<flags>]

Flags:
  -h, --help              Show context-sensitive help (also try --help-long and --help-man).
      --logstash.endpoint="http://localhost:9600"  
                          The protocol, host and port on which
 
 logstash metrics API listens
      --web.listen-address=":9198"  
                          Address on which to expose metrics and web interface.
      --log.level="info"  Only log messages with the given severity or above. Valid levels: [debug, info, warn, error, fatal]
      --log.format="logger:stderr"
 
  
                          Set the log target and format. Example: "logger:syslog?appname=bob&local=7" or "logger:stdout?json=true"
      --version           Show application version.

啟動logstash_exporter

/usr/local/bin/logstash_exporter

訪問metrics: curl http://localhost:9198/metrics
Grafana畫圖：
https://grafana.com/dashboards/2525