feat: allow setting service.name for OTLP metrics

docs/content/reference/static-configuration/cli-ref.md

@@ -429,6 +429,9 @@ TLS key
 `--metrics.otlp.pushinterval`:  
 Period between calls to collect a checkpoint. (Default: ```10```)
 
+`--metrics.otlp.servicename`:  
+OTEL service name to use. (Default: ```traefik```)
+
 `--metrics.prometheus`:  
 Prometheus metrics exporter type. (Default: ```false```)
 

docs/content/reference/static-configuration/env-ref.md

@@ -429,6 +429,9 @@ TLS key
 `TRAEFIK_METRICS_OTLP_PUSHINTERVAL`:  
 Period between calls to collect a checkpoint. (Default: ```10```)
 
+`TRAEFIK_METRICS_OTLP_SERVICENAME`:  
+OTEL service name to use. (Default: ```traefik```)
+
 `TRAEFIK_METRICS_PROMETHEUS`:  
 Prometheus metrics exporter type. (Default: ```false```)
 

docs/content/reference/static-configuration/file.toml

@@ -342,6 +342,7 @@
     addServicesLabels = true
     explicitBoundaries = [42.0, 42.0]
     pushInterval = "42s"
+    serviceName = "foobar"
     [metrics.otlp.grpc]
       endpoint = "foobar"
       insecure = true

docs/content/reference/static-configuration/file.yaml

@@ -402,6 +402,7 @@ metrics:
       - 42
       - 42
     pushInterval: 42s
+    serviceName: foobar
 ping:
   entryPoint: foobar
   manualRouting: true