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nsxt_exporter.go
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package main
import (
"net/http"
"nsxt_exporter/collector"
"os"
"github.com/go-kit/kit/log/level"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/prometheus/common/promlog"
"github.com/prometheus/common/promlog/flag"
"github.com/prometheus/common/version"
nsxt "github.com/vmware/go-vmware-nsxt"
kingpin "gopkg.in/alecthomas/kingpin.v2"
)
type nsxtOpts struct {
host string
username string
password string
insecure bool
}
func newNSXTClient(opts nsxtOpts) (*nsxt.APIClient, error) {
cfg := nsxt.Configuration{
BasePath: "/api/v1",
Host: opts.host,
Scheme: "https",
UserAgent: "nsxt_exporter/1.0",
ClientAuthCertFile: "",
RemoteAuth: false,
UserName: opts.username,
Password: opts.password,
Insecure: opts.insecure,
}
return nsxt.NewAPIClient(&cfg)
}
func main() {
var (
listenAddress = kingpin.Flag("web.listen-address", "Address to listen on for web interface and telemetry.").Default(":9744").String()
metricsPath = kingpin.Flag("web.telemetry-path", "Path under which to expose metrics.").Default("/metrics").String()
opts = nsxtOpts{}
)
kingpin.Flag("nsxt.host", "URI of NSX-T manager.").Default("localhost").StringVar(&opts.host)
kingpin.Flag("nsxt.username", "The username to connect to the NSX-T manager as.").StringVar(&opts.username)
kingpin.Flag("nsxt.password", "The password for the NSX-T manager user.").StringVar(&opts.password)
kingpin.Flag("nsxt.insecure", "Disable TLS host verification.").Default("true").BoolVar(&opts.insecure)
promlogConfig := &promlog.Config{}
flag.AddFlags(kingpin.CommandLine, promlogConfig)
kingpin.HelpFlag.Short('h')
kingpin.Parse()
logger := promlog.New(promlogConfig)
level.Info(logger).Log("msg", "Starting nsxt_exporter", "version", version.Info())
level.Info(logger).Log("msg", "Build context", "context", version.BuildContext())
nsxtClient, err := newNSXTClient(opts)
if err != nil {
level.Error(logger).Log("msg", "Error creating nsx-t client", "err", err)
os.Exit(1)
}
collector := collector.NewNSXTCollector(nsxtClient, logger)
prometheus.MustRegister(collector)
prometheus.MustRegister(version.NewCollector("nsxt_exporter"))
level.Info(logger).Log("msg", "Listening on address", "address", *listenAddress)
http.Handle(*metricsPath, promhttp.Handler())
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte(`<html>
<head><title>NSX-T Exporter</title></head>
<body>
<h1>NSX-T Exporter</h1>
<p><a href="` + *metricsPath + `"></p>
</body>
</html>`))
})
if err := http.ListenAndServe(*listenAddress, nil); err != nil {
level.Error(logger).Log("msg", "Error starting HTTP server", "err", err)
os.Exit(1)
}
}