我想弄清楚如何向普羅米修斯收集器添加標簽。任何想法我在這里缺少什么？我有兩個文件：main.go 和 collector.go我使用以下鏈接作為指南。https://rsmitty.github.io/Prometheus-Exporters/我模擬了這個例子，所以我可以把它貼在這里。我最終不會為命令提取“date +%s”。只是不知道在哪里添加標簽。對于我正在嘗試添加主機名的標簽，結果如下：# HELP cmd_result Shows the cmd result# TYPE cmd_result gaugecmd_result{host="my_device_hostname"} 1.919256141363144e-76我對 golang 也很陌生，所以我很有可能把這一切都弄錯了！我最終試圖讓普羅米修斯在每次刮擦時拉出 cmd 結果。主程序package mainimport (    "net/http"    log "github.com/Sirupsen/logrus"    "github.com/prometheus/client_golang/prometheus"    "github.com/prometheus/client_golang/prometheus/promhttp")func main() {    //Create a new instance of the collector and    //register it with the prometheus client.    cmd := newCollector()    prometheus.MustRegister(cmd)    //This section will start the HTTP server and expose    //any metrics on the /metrics endpoint.    http.Handle("/metrics", promhttp.Handler())    log.Info("Beginning to serve on port :8080")    log.Fatal(http.ListenAndServe(":8080", nil))}收集器.gopackage mainimport (    "encoding/binary"    "fmt"    "math"    "os/exec"    "strings"    "github.com/prometheus/client_golang/prometheus")type cmdCollector struct {    cmdMetric *prometheus.Desc}func newCollector() *cmdCollector {    return &cmdCollector{        cmdMetric: prometheus.NewDesc("cmd_result",            "Shows the cmd result",            nil, nil,        ),    }}func (collector *cmdCollector) Describe(ch chan<- *prometheus.Desc) {    ch <- collector.cmdMetric}func (collector *cmdCollector) Collect(ch chan<- prometheus.Metric) {    var metricValue float64    command := string("date +%s")    cmdResult := exeCmd(command)    metricValue = cmdResult    ch <- prometheus.MustNewConstMetric(collector.cmdMetric, prometheus.GaugeValue, metricValue)}