Add OpenTelemetry tracing and metrics support

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

@@ -357,6 +357,51 @@ InfluxDB v2 push interval. (Default: ```10```)
 `--metrics.influxdb2.token`:  
 InfluxDB v2 access token.
 
+`--metrics.opentelemetry`:  
+OpenTelemetry metrics exporter type. (Default: ```false```)
+
+`--metrics.opentelemetry.addentrypointslabels`:  
+Enable metrics on entry points. (Default: ```true```)
+
+`--metrics.opentelemetry.address`:  
+Address (host:port) of the collector endpoint. (Default: ```localhost:4318```)
+
+`--metrics.opentelemetry.addrouterslabels`:  
+Enable metrics on routers. (Default: ```false```)
+
+`--metrics.opentelemetry.addserviceslabels`:  
+Enable metrics on services. (Default: ```true```)
+
+`--metrics.opentelemetry.explicitboundaries`:  
+Boundaries for latency metrics. (Default: ```0.005000, 0.010000, 0.025000, 0.050000, 0.100000, 0.250000, 0.500000, 1.000000, 2.500000, 5.000000, 10.000000```)
+
+`--metrics.opentelemetry.grpc`:  
+gRPC specific configuration for the OpenTelemetry collector. (Default: ```true```)
+
+`--metrics.opentelemetry.headers.<name>`:  
+Headers sent with payload.
+
+`--metrics.opentelemetry.insecure`:  
+Disables client transport security for the exporter. (Default: ```false```)
+
+`--metrics.opentelemetry.path`:  
+Set the URL path of the collector endpoint.
+
+`--metrics.opentelemetry.pushinterval`:  
+Period between calls to collect a checkpoint. (Default: ```10```)
+
+`--metrics.opentelemetry.tls.ca`:  
+TLS CA
+
+`--metrics.opentelemetry.tls.cert`:  
+TLS cert
+
+`--metrics.opentelemetry.tls.insecureskipverify`:  
+TLS insecure skip verify (Default: ```false```)
+
+`--metrics.opentelemetry.tls.key`:  
+TLS key
+
 `--metrics.prometheus`:  
 Prometheus metrics exporter type. (Default: ```false```)
 
@@ -1095,6 +1140,36 @@ Sets the sampling type. (Default: ```const```)
 `--tracing.jaeger.tracecontextheadername`:  
 Sets the header name used to store the trace ID. (Default: ```uber-trace-id```)
 
+`--tracing.opentelemetry`:  
+Settings for OpenTelemetry. (Default: ```false```)
+
+`--tracing.opentelemetry.address`:  
+Sets the address (host:port) of the collector endpoint. (Default: ```localhost:4318```)
+
+`--tracing.opentelemetry.grpc`:  
+gRPC specific configuration for the OpenTelemetry collector. (Default: ```true```)
+
+`--tracing.opentelemetry.headers.<name>`:  
+Defines additional headers to be sent with the payloads.
+
+`--tracing.opentelemetry.insecure`:  
+Disables client transport security for the exporter. (Default: ```false```)
+
+`--tracing.opentelemetry.path`:  
+Sets the URL path of the collector endpoint.
+
+`--tracing.opentelemetry.tls.ca`:  
+TLS CA
+
+`--tracing.opentelemetry.tls.cert`:  
+TLS cert
+
+`--tracing.opentelemetry.tls.insecureskipverify`:  
+TLS insecure skip verify (Default: ```false```)
+
+`--tracing.opentelemetry.tls.key`:  
+TLS key
+
 `--tracing.servicename`:  
 Set the name for this service. (Default: ```traefik```)
 

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

@@ -357,6 +357,51 @@ InfluxDB retention policy used when protocol is http.
 `TRAEFIK_METRICS_INFLUXDB_USERNAME`:  
 InfluxDB username (only with http).
 
+`TRAEFIK_METRICS_OPENTELEMETRY`:  
+OpenTelemetry metrics exporter type. (Default: ```false```)
+
+`TRAEFIK_METRICS_OPENTELEMETRY_ADDENTRYPOINTSLABELS`:  
+Enable metrics on entry points. (Default: ```true```)
+
+`TRAEFIK_METRICS_OPENTELEMETRY_ADDRESS`:  
+Address (host:port) of the collector endpoint. (Default: ```localhost:4318```)
+
+`TRAEFIK_METRICS_OPENTELEMETRY_ADDROUTERSLABELS`:  
+Enable metrics on routers. (Default: ```false```)
+
+`TRAEFIK_METRICS_OPENTELEMETRY_ADDSERVICESLABELS`:  
+Enable metrics on services. (Default: ```true```)
+
+`TRAEFIK_METRICS_OPENTELEMETRY_EXPLICITBOUNDARIES`:  
+Boundaries for latency metrics. (Default: ```0.005000, 0.010000, 0.025000, 0.050000, 0.100000, 0.250000, 0.500000, 1.000000, 2.500000, 5.000000, 10.000000```)
+
+`TRAEFIK_METRICS_OPENTELEMETRY_GRPC`:  
+gRPC specific configuration for the OpenTelemetry collector. (Default: ```true```)
+
+`TRAEFIK_METRICS_OPENTELEMETRY_HEADERS_<NAME>`:  
+Headers sent with payload.
+
+`TRAEFIK_METRICS_OPENTELEMETRY_INSECURE`:  
+Disables client transport security for the exporter. (Default: ```false```)
+
+`TRAEFIK_METRICS_OPENTELEMETRY_PATH`:  
+Set the URL path of the collector endpoint.
+
+`TRAEFIK_METRICS_OPENTELEMETRY_PUSHINTERVAL`:  
+Period between calls to collect a checkpoint. (Default: ```10```)
+
+`TRAEFIK_METRICS_OPENTELEMETRY_TLS_CA`:  
+TLS CA
+
+`TRAEFIK_METRICS_OPENTELEMETRY_TLS_CERT`:  
+TLS cert
+
+`TRAEFIK_METRICS_OPENTELEMETRY_TLS_INSECURESKIPVERIFY`:  
+TLS insecure skip verify (Default: ```false```)
+
+`TRAEFIK_METRICS_OPENTELEMETRY_TLS_KEY`:  
+TLS key
+
 `TRAEFIK_METRICS_PROMETHEUS`:  
 Prometheus metrics exporter type. (Default: ```false```)
 
@@ -1095,6 +1140,36 @@ Sets the sampling type. (Default: ```const```)
 `TRAEFIK_TRACING_JAEGER_TRACECONTEXTHEADERNAME`:  
 Sets the header name used to store the trace ID. (Default: ```uber-trace-id```)
 
+`TRAEFIK_TRACING_OPENTELEMETRY`:  
+Settings for OpenTelemetry. (Default: ```false```)
+
+`TRAEFIK_TRACING_OPENTELEMETRY_ADDRESS`:  
+Sets the address (host:port) of the collector endpoint. (Default: ```localhost:4318```)
+
+`TRAEFIK_TRACING_OPENTELEMETRY_GRPC`:  
+gRPC specific configuration for the OpenTelemetry collector. (Default: ```true```)
+
+`TRAEFIK_TRACING_OPENTELEMETRY_HEADERS_<NAME>`:  
+Defines additional headers to be sent with the payloads.
+
+`TRAEFIK_TRACING_OPENTELEMETRY_INSECURE`:  
+Disables client transport security for the exporter. (Default: ```false```)
+
+`TRAEFIK_TRACING_OPENTELEMETRY_PATH`:  
+Sets the URL path of the collector endpoint.
+
+`TRAEFIK_TRACING_OPENTELEMETRY_TLS_CA`:  
+TLS CA
+
+`TRAEFIK_TRACING_OPENTELEMETRY_TLS_CERT`:  
+TLS cert
+
+`TRAEFIK_TRACING_OPENTELEMETRY_TLS_INSECURESKIPVERIFY`:  
+TLS insecure skip verify (Default: ```false```)
+
+`TRAEFIK_TRACING_OPENTELEMETRY_TLS_KEY`:  
+TLS key
+
 `TRAEFIK_TRACING_SERVICENAME`:  
 Set the name for this service. (Default: ```traefik```)
 

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

@@ -307,6 +307,25 @@
     [metrics.influxDB2.additionalLabels]
       name0 = "foobar"
       name1 = "foobar"
+  [metrics.openTelemetry]
+    address = "foobar"
+    addEntryPointsLabels = true
+    addRoutersLabels = true
+    addServicesLabels = true
+    pushInterval = "42s"
+    path = "foobar"
+    explicitBoundaries =  [42.0, 42.0]
+    insecure = true
+    [metrics.openTelemetry.headers]
+      name0 = "foobar"
+      name1 = "foobar"
+    [metrics.openTelemetry.tls]
+      ca = "foobar"
+      caOptional = true
+      cert = "foobar"
+      insecureSkipVerify = true
+      key = "foobar"
+    [metrics.openTelemetry.grpc]
 
 [ping]
   entryPoint = "foobar"
@@ -391,6 +410,20 @@
     serverURL = "foobar"
     secretToken = "foobar"
     serviceEnvironment = "foobar"
+  [tracing.openTelemetry]
+    address = "foobar"
+    insecure = true
+    path = "foobar"
+    [tracing.openTelemetry.headers]
+      name0 = "foobar"
+      name1 = "foobar"
+    [tracing.openTelemetry.tls]
+      ca = "foobar"
+      caOptional = true
+      cert = "foobar"
+      key = "foobar"
+      insecureSkipVerify = true
+    [tracing.openTelemetry.grpc]
 
 [hostResolver]
   cnameFlattening = true

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

@@ -335,6 +335,28 @@ metrics:
     additionalLabels:
       name0: foobar
       name1: foobar
+  openTelemetry:
+    address: foobar
+    addEntryPointsLabels: true
+    addRoutersLabels: true
+    addServicesLabels: true
+    explicitBoundaries:
+      - 42
+      - 42
+    headers:
+      name0: foobar
+      name1: foobar
+    insecure: true
+    path: foobar
+    pushInterval: 42s
+    tls:
+      ca: foobar
+      caOptional: true
+      cert: foobar
+      insecureSkipVerify: true
+      key: foobar
+    grpc: {}
+
 ping:
   entryPoint: foobar
   manualRouting: true
@@ -417,6 +439,20 @@ tracing:
     serverURL: foobar
     secretToken: foobar
     serviceEnvironment: foobar
+  openTelemetry:
+    address: foobar
+    headers:
+      name0: foobar
+      name1: foobar
+    insecure: true
+    path: foobar
+    tls:
+      ca: foobar
+      caOptional: true
+      cert: foobar
+      key: foobar
+      insecureSkipVerify: true
+    grpc: {}
 hostResolver:
   cnameFlattening: true
   resolvConfig: foobar