prometheus/nginx_exporter
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add tls support

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Author:    mpenate <mpsanchez.desarrollo@gmail.com>
Date:      Fri Nov 6 17:23:10 2020 +0100
This commit is contained in:
mpenate
2020-11-06 17:23:10 +01:00
committed by Michael Pleshakov
parent 7c45b2334b
commit d7cb1797d6
2 changed files with 35 additions and 3 deletions
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8
README.md
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@@ -92,7 +92,13 @@ Usage of ./nginx-prometheus-exporter:
-web.listen-address string
An address or unix domain socket path to listen on for web interface and telemetry. The default value can be overwritten by LISTEN_ADDRESS environment variable. (default ":9113")
-web.telemetry-path string
A path under which to expose metrics. The default value can be overwritten by TELEMETRY_PATH environment variable. (default "/metrics")
A path under which to expose metrics. The default value can be overwritten by TELEMETRY_PATH environment variable. (default "/metrics")
-web.secured-metrics
Expose metrics using https. The default value can be overwritten by SECURED_METRICS variable. (default false)
-web.ssl-server-cert string
Path to the PEM encoded certificate for the nginx-exporter metrics server(when web.secured-metrics=true). The default value can be overwritten by SSL_SERVER_CERT variable.
-web.ssl-server-key string
Path to the PEM encoded key for the nginx-exporter metrics server (when web.secured-metrics=true). The default value can be overwritten by SSL_SERVER_KEY variable.
-version
Display the NGINX exporter version. (default false)
```

30
exporter.go
View File

@@ -223,6 +223,9 @@ var (
// Defaults values
defaultListenAddress = getEnv("LISTEN_ADDRESS", ":9113")
defaultSecuredMetrics = getEnvBool("SECURED_METRICS", false)
defaultSslServerCert = getEnv("SSL_SERVER_CERT", "")
defaultSslServerKey = getEnv("SSL_SERVER_KEY", "")
defaultMetricsPath = getEnv("TELEMETRY_PATH", "/metrics")
defaultNginxPlus = getEnvBool("NGINX_PLUS", false)
defaultScrapeURI = getEnv("SCRAPE_URI", "http://127.0.0.1:8080/stub_status")
@@ -239,6 +242,15 @@ var (
listenAddr = flag.String("web.listen-address",
defaultListenAddress,
"An address or unix domain socket path to listen on for web interface and telemetry. The default value can be overwritten by LISTEN_ADDRESS environment variable.")
securedMetrics = flag.Bool("web.secured-metrics",
defaultSecuredMetrics,
"Expose metrics using https. The default value can be overwritten by SECURED_METRICS variable.")
sslServerCert = flag.String("web.ssl-server-cert",
defaultSslServerCert,
"Path to the PEM encoded certificate for the nginx-exporter metrics server(when web.secured-metrics=true). The default value can be overwritten by SSL_SERVER_CERT variable.")
sslServerKey = flag.String("web.ssl-server-key",
defaultSslServerKey,
"Path to the PEM encoded key for the nginx-exporter metrics server (when web.secured-metrics=true). The default value can be overwritten by SSL_SERVER_KEY variable.")
metricsPath = flag.String("web.telemetry-path",
defaultMetricsPath,
"A path under which to expose metrics. The default value can be overwritten by TELEMETRY_PATH environment variable.")
@@ -409,8 +421,22 @@ func main() {
log.Fatalf("Could not create listener: %v", err)
}
log.Printf("NGINX Prometheus Exporter has successfully started")
log.Fatal(srv.Serve(listener))
if *securedMetrics {
_, err = os.Stat(*sslServerCert)
if err != nil {
log.Fatalf("Cert file is not set, not readable or non-existent. Make sure you set -web.ssl-server-cert when starting your exporter with -web.secured-metrics=true: %v", err)
}
_, err = os.Stat(*sslServerKey)
if err != nil {
log.Fatalf("Key file is not set, not readable or non-existent. Make sure you set -web.ssl-server-key when starting your exporter with -web.secured-metrics=true: %v", err)
}
log.Printf("NGINX Prometheus Exporter has successfully started using https")
log.Fatal(srv.ServeTLS(listener, *sslServerCert, *sslServerKey))
} else {
log.Printf("NGINX Prometheus Exporter has successfully started")
log.Fatal(srv.Serve(listener))
}
}
type userAgentRoundTripper struct {