Metrics
Traefik Hub API Gateway provides metrics in the OpenTelemetry format as well as the following vendor specific backends:
Traefik Proxy hosts an official Grafana dashboard for both on-premises and Kubernetes deployments that are can be used to monitor Hub API Gateway metrics too.
Helm Chart Configuration Options
Traefik Hub API Gateway can be configured to provide metrics to the OpenTelemetry format using the Helm Chart values.
To know more about the Helm Chart options, refer to Helm Chart reference page (Options metrics.otlp
).
By default, the Traefik Hub API Gateway enables the Prometheus metrics. Disbale them adding the following option:
metrics:
prometheus:
enabled: false
Configuration Options
The section below describe how to configure Traefik Hub API Gateway to provide metrics using the static configuration.
Open Telemetry
Field | Description | Default | Required |
---|---|---|---|
metrics.addInternals | Enables metrics for internal resources (e.g.: ping@internals ). | false | No |
metrics.otlp.addEntryPointsLabels | Enable metrics on entry points. | true | No |
metrics.otlp.addRoutersLabels | Enable metrics on routers. | false | No |
metrics.otlp.addServicesLabels | Enable metrics on services. | true | No |
metrics.otlp.explicitBoundaries | Explicit boundaries for Histogram data points. | ".005, .01, .025, .05, .1, .25, .5, 1, 2.5, 5, 10" | No |
metrics.otlp.pushInterval | Interval at which metrics are sent to the OpenTelemetry Collector. | 10s | No |
metrics.otlp.serviceName | Defines the OTEL service name to use. | traefik | No |
metrics.otlp.http | This instructs the exporter to send the metrics to the OpenTelemetry Collector using HTTP. Setting the sub-options with their default values. | null/false | No |
metrics.otlp.http.endpoint | URL of the OpenTelemetry Collector to send metrics to. Format=" <scheme>://<host>:<port><path> " | "http://localhost:4318/v1/metrics" | Yes |
metrics.otlp.http.headers | Additional headers sent with metrics by the exporter to the OpenTelemetry Collector. | No | |
metrics.otlp.http.tls.ca | Path to the certificate authority used for the secure connection to the OpenTelemetry Collector, it defaults to the system bundle. | "" | No |
metrics.otlp.http.tls.cert | Path to the public certificate used for the secure connection to the OpenTelemetry Collector. When using this option, setting the key option is required. | "" | No |
metrics.otlp.http.tls.key | This instructs the exporter to send the metrics to the OpenTelemetry Collector using HTTP. Setting the sub-options with their default values. | ""null/false "" | No |
metrics.otlp.http.tls.insecureskipverify | Allow the TLS connection to the OpenTelemetry Collector accepts any certificate presented by the server regardless of the hostnames it covers. | false | Yes |
metrics.otlp.grpc | This instructs the exporter to send metrics to the OpenTelemetry Collector using gRPC. | null/false | No |
metrics.otlp.grpc.endpoint | Address of the OpenTelemetry Collector to send metrics to. Format=" <host>:<port> " | "localhost:4317" | Yes |
metrics.otlp.grpc.headers | Additional headers sent with metrics by the exporter to the OpenTelemetry Collector. | No | |
metrics.otlp.http.grpc.insecure | Allows exporter to send metrics to the OpenTelemetry Collector without using a secured protocol. | false | Yes |
metrics.otlp.grpc.tls.ca | Path to the certificate authority used for the secure connection to the OpenTelemetry Collector, it defaults to the system bundle. | "" | No |
metrics.otlp.grpc.tls.cert | Path to the public certificate used for the secure connection to the OpenTelemetry Collector. When using this option, setting the key option is required. | "" | No |
metrics.otlp.grpc.tls.key | This instructs the exporter to send the metrics to the OpenTelemetry Collector using HTTP. Setting the sub-options with their default values. | ""null/false "" | No |
metrics.otlp.grpc.tls.insecureskipverify | Allow the TLS connection to the OpenTelemetry Collector accepts any certificate presented by the server regardless of the hostnames it covers. | false | Yes |
Datadog
Field | Description | Default | Required |
---|---|---|---|
metrics.addInternals | Enables metrics for internal resources (e.g.: ping@internals ). | false | No |
metrics.datadog.addEntryPointsLabels | Enable metrics on entry points. | true | No |
metrics.datadog.addRoutersLabels | Enable metrics on routers. | false | No |
metrics.datadog.addServicesLabels | Enable metrics on services. | true | No |
metrics.datadog.pushInterval | The interval used by the exporter to push metrics to DataDog server. | 10s | No |
metrics.datadog.address | Address instructs exporter to send metrics to datadog-agent at this address. This address can be a Unix Domain Socket (UDS) address with the following form: unix:///path/to/datadog.socket . | "127.0.0.1:8125" | Yes |
metrics.datadog.prefix | The prefix to use for metrics collection. | "traefik" | No |
InfluxDB v2
Field | Description | Default | Required |
---|---|---|---|
metrics.addInternals | Enables metrics for internal resources (e.g.: ping@internals ). | false | No |
metrics.influxDB2.addEntryPointsLabels | Enable metrics on entry points. | true | No |
metrics.influxDB2.addRoutersLabels | Enable metrics on routers. | false | No |
metrics.influxDB2.addServicesLabels | Enable metrics on services. | true | No |
metrics.influxDB2.additionalLabels | Additional labels (InfluxDB tags) on all metrics. | {}] | No |
metrics.influxDB2.pushInterval | The interval used by the exporter to push metrics to InfluxDB server. | 10s | No |
metrics.influxDB2.address | Address of the InfluxDB v2 instance. | "http://localhost:8086" | Yes |
metrics.influxDB2.token | Token with which to connect to InfluxDB v2. | "" | Yes |
metrics.influxDB2.org | Organisation where metrics will be stored. | "" | Yes |
metrics.influxDB2.bucket | Bucket where metrics will be stored. | "" | Yes |
Prometheus
Field | Description | Default | Required |
---|---|---|---|
metrics.prometheus.addInternals | Enables metrics for internal resources (e.g.: ping@internals ). | false | No |
metrics.prometheus.addEntryPointsLabels | Enable metrics on entry points. | true | No |
metrics.prometheus.addRoutersLabels | Enable metrics on routers. | false | No |
metrics.prometheus.addServicesLabels | Enable metrics on services. | true | No |
metrics.prometheus.buckets | Buckets for latency metrics. | "0.100000, 0.300000, 1.200000, 5.000000" | No |
metrics.prometheus.manualRouting | Set to true, it disables the default internal router in order to allow creating a custom router for the prometheus@internal service. | false | No |
metrics.prometheus.entryPoint | Traefik Entrypoint name used to expose metrics. | "traefik" | No |
metrics.prometheus.headerLabels | Defines the extra labels for the requests_total metrics.More information here. | Yes |
headerLabels
Defines the extra labels for the requests_total
metrics, and for each of them, the request header containing the value for this label.
If the header is not present in the request it will be added nonetheless with an empty value.
The label must be a valid label name for Prometheus metrics, otherwise, the Prometheus metrics provider will fail to serve any Traefik-related metric.
How to provide the `Host` header value
The Host
header is never present in the Header map of a request, as per go documentation says:
// For incoming requests, the Host header is promoted to the
// Request.Host field and removed from the Header map.
As a workaround, to obtain the Host of a request as a label, use instead the X-Forwarded-Host
header.
Configuration Example
Here is an example of the entryPoint requests_total
metric with an additional "useragent" label.
When configuring the label in Static Configuration:
- Configuration
- Request
- Metric
# static_configuration.yaml
metrics:
prometheus:
headerLabels:
useragent: User-Agent
curl -H "User-Agent: foobar" http://localhost
traefik_entrypoint_requests_total\{code="200",entrypoint="web",method="GET",protocol="http",useragent="foobar"\} 1
StatsD
Field | Description | Default | Required |
---|---|---|---|
metrics.addInternals | Enables metrics for internal resources (e.g.: ping@internals ). | false | No |
metrics.statsD.addEntryPointsLabels | Enable metrics on entry points. | true | No |
metrics.statsD.addRoutersLabels | Enable metrics on routers. | false | No |
metrics.statsD.addServicesLabels | Enable metrics on services. | true | No |
metrics.statsD.pushInterval | The interval used by the exporter to push metrics to DataDog server. | 10s | No |
metrics.statsD.address | Address instructs exporter to send metrics to statsd at this address. | "127.0.0.1:8125" | Yes |
metrics.statsD.prefix | The prefix to use for metrics collection. | "traefik" | No |
Metrics Provided
Global Metrics
- OpenTelemetry
- Prometheus
- DataDog
- InfuxDB2
- StatsD
Metric | Type | Labels | Description |
---|---|---|---|
traefik_config_reloads_total | Count | The total count of configuration reloads. | |
traefik_config_last_reload_success | Gauge | The timestamp of the last configuration reload success. | |
traefik_open_connections | Gauge | entrypoint , protocol | The current count of open connections, by entrypoint and protocol. |
traefik_tls_certs_not_after | Gauge | The expiration date of certificates. |
Metric | Type | Labels | Description |
---|---|---|---|
traefik_config_reloads_total | Count | The total count of configuration reloads. | |
traefik_config_last_reload_success | Gauge | The timestamp of the last configuration reload success. | |
traefik_open_connections | Gauge | entrypoint , protocol | The current count of open connections, by entrypoint and protocol. |
traefik_tls_certs_not_after | Gauge | The expiration date of certificates. |
Metric | Type | Labels | Description |
---|---|---|---|
config.reload.total | Count | The total count of configuration reloads. | |
config.reload.lastSuccessTimestamp | Gauge | The timestamp of the last configuration reload success. | |
open.connections | Gauge | entrypoint , protocol | The current count of open connections, by entrypoint and protocol. |
tls.certs.notAfterTimestamp | Gauge | The expiration date of certificates. |
Metric | Type | Labels | Description |
---|---|---|---|
traefik.config.reload.total | Count | The total count of configuration reloads. | |
traefik.config.reload.lastSuccessTimestamp | Gauge | The timestamp of the last configuration reload success. | |
traefik.open.connections | Gauge | entrypoint , protocol | The current count of open connections, by entrypoint and protocol. |
traefik.tls.certs.notAfterTimestamp | Gauge | The expiration date of certificates. |
Metric | Type | Labels | Description |
---|---|---|---|
{prefix}.config.reload.total | Count | The total count of configuration reloads. | |
{prefix}.config.reload.lastSuccessTimestamp | Gauge | The timestamp of the last configuration reload success. | |
{prefix}.open.connections | Gauge | entrypoint , protocol | The current count of open connections, by entrypoint and protocol. |
{prefix}.tls.certs.notAfterTimestamp | Gauge | The expiration date of certificates. |
By default, {prefix} value is traefik
.
Labels
Here is a comprehensive list of labels that are provided by the global metrics:
Label | Description | Example |
---|---|---|
entrypoint | Entrypoint that handled the connection | "example_entrypoint" |
protocol | Connection protocol | "TCP" |
OpenTelemetry Semantic Conventions
Traefik Proxy follows official OpenTelemetry semantic conventions v1.23.1.
HTTP Server
Metric | Type | Labels | Description |
---|---|---|---|
http.server.request.duration | Histogram | error.type , http.request.method , http.response.status_code , network.protocol.name , server.address , server.port , url.scheme | Duration of HTTP server requests |
Labels
Here is a comprehensive list of labels that are provided by the metrics:
Label | Description | example |
---|---|---|
error.type | Describes a class of error the operation ended with | "500" |
http.request.method | HTTP request method | "GET" |
http.response.status_code | HTTP response status code | "200" |
network.protocol.name | OSI application layer or non-OSI equivalent | "http/1.1" |
network.protocol.version | Version of the protocol specified in network.protocol.name | "1.1" |
server.address | Name of the local HTTP server that received the request | "example.com" |
server.port | Port of the local HTTP server that received the request | "80" |
url.scheme | The URI scheme component identifying the used protocol | "http" |
HTTP Client
Metric | Type | Labels | Description |
---|---|---|---|
http.client.request.duration | Histogram | error.type , http.request.method , http.response.status_code , network.protocol.name , server.address , server.port , url.scheme | Duration of HTTP client requests |
Labels
Here is a comprehensive list of labels that are provided by the metrics:
Label | Description | example |
---|---|---|
error.type | Describes a class of error the operation ended with | "500" |
http.request.method | HTTP request method | "GET" |
http.response.status_code | HTTP response status code | "200" |
network.protocol.name | OSI application layer or non-OSI equivalent | "http/1.1" |
network.protocol.version | Version of the protocol specified in network.protocol.name | "1.1" |
server.address | Name of the local HTTP server that received the request | "example.com" |
server.port | Port of the local HTTP server that received the request | "80" |
url.scheme | The URI scheme component identifying the used protocol | "http" |
HTTP Metrics
On top of the official OpenTelemetry semantic conventions, Traefik provides its own metrics to monitor the incoming traffic.
EntryPoint Metrics
- OpenTelemetry
- Prometheus
- DataDog
- InfuxDB2
- StatsD
Metric | Type | Labels | Description |
---|---|---|---|
traefik_entrypoint_requests_total | Count | code , method , protocol , entrypoint | The total count of HTTP requests received by an entrypoint. |
traefik_entrypoint_requests_tls_total | Count | tls_version , tls_cipher , entrypoint | The total count of HTTPS requests received by an entrypoint. |
traefik_entrypoint_request_duration_seconds | Histogram | code , method , protocol , entrypoint | Request processing duration histogram on an entrypoint. |
traefik_entrypoint_requests_bytes_total | Count | code , method , protocol , entrypoint | The total size of HTTP requests in bytes handled by an entrypoint. |
traefik_entrypoint_responses_bytes_total | Count | code , method , protocol , entrypoint | The total size of HTTP responses in bytes handled by an entrypoint. |
Metric | Type | Labels | Description |
---|---|---|---|
traefik_entrypoint_requests_total | Count | code , method , protocol , entrypoint | The total count of HTTP requests received by an entrypoint. |
traefik_entrypoint_requests_tls_total | Count | tls_version , tls_cipher , entrypoint | The total count of HTTPS requests received by an entrypoint. |
traefik_entrypoint_request_duration_seconds | Histogram | code , method , protocol , entrypoint | Request processing duration histogram on an entrypoint. |
traefik_entrypoint_requests_bytes_total | Count | code , method , protocol , entrypoint | The total size of HTTP requests in bytes handled by an entrypoint. |
traefik_entrypoint_responses_bytes_total | Count | code , method , protocol , entrypoint | The total size of HTTP responses in bytes handled by an entrypoint. |
Metric | Type | Labels | Description |
---|---|---|---|
entrypoint.requests.total | Count | code , method , protocol , entrypoint | The total count of HTTP requests received by an entrypoint. |
entrypoint.requests.tls.total | Count | tls_version , tls_cipher , entrypoint | The total count of HTTPS requests received by an entrypoint. |
entrypoint.request.duration.seconds | Histogram | code , method , protocol , entrypoint | Request processing duration histogram on an entrypoint. |
entrypoint.requests.bytes.total | Count | code , method , protocol , entrypoint | The total size of HTTP requests in bytes handled by an entrypoint. |
entrypoint.responses.bytes.total | Count | code , method , protocol , entrypoint | The total size of HTTP responses in bytes handled by an entrypoint. |
Metric | Type | Labels | Description |
---|---|---|---|
traefik.entrypoint.requests.total | Count | code , method , protocol , entrypoint | The total count of HTTP requests received by an entrypoint. |
traefik.entrypoint.requests.tls.total | Count | tls_version , tls_cipher , entrypoint | The total count of HTTPS requests received by an entrypoint. |
traefik.entrypoint.request.duration.seconds | Histogram | code , method , protocol , entrypoint | Request processing duration histogram on an entrypoint. |
traefik.entrypoint.requests.bytes.total | Count | code , method , protocol , entrypoint | The total size of HTTP requests in bytes handled by an entrypoint. |
traefik.entrypoint.responses.bytes.total | Count | code , method , protocol , entrypoint | The total size of HTTP responses in bytes handled by an entrypoint. |
Metric | Type | Labels | Description |
---|---|---|---|
{prefix}.entrypoint.requests.total | Count | code , method , protocol , entrypoint | The total count of HTTP requests received by an entrypoint. |
{prefix}.entrypoint.requests.tls.total | Count | tls_version , tls_cipher , entrypoint | The total count of HTTPS requests received by an entrypoint. |
{prefix}.entrypoint.request.duration.seconds | Histogram | code , method , protocol , entrypoint | Request processing duration histogram on an entrypoint. |
{prefix}.entrypoint.requests.bytes.total | Count | code , method , protocol , entrypoint | The total size of HTTP requests in bytes handled by an entrypoint. |
{prefix}.entrypoint.responses.bytes.total | Count | code , method , protocol , entrypoint | The total size of HTTP responses in bytes handled by an entrypoint. |
By default, {prefix} value is traefik
.
Router Metrics
- OpenTelemetry
- Prometheus
- DataDog
- InfuxDB2
- StatsD
Metric | Type | Labels | Description |
---|---|---|---|
traefik_router_requests_total | Count | code , method , protocol , router , service | The total count of HTTP requests handled by a router. |
traefik_router_requests_tls_total | Count | tls_version , tls_cipher , router , service | The total count of HTTPS requests handled by a router. |
traefik_router_request_duration_seconds | Histogram | code , method , protocol , router , service | Request processing duration histogram on a router. |
traefik_router_requests_bytes_total | Count | code , method , protocol , router , service | The total size of HTTP requests in bytes handled by a router. |
traefik_router_responses_bytes_total | Count | code , method , protocol , router , service | The total size of HTTP responses in bytes handled by a router. |
Metric | Type | Labels | Description |
---|---|---|---|
traefik_router_requests_total | Count | code , method , protocol , router , service | The total count of HTTP requests handled by a router. |
traefik_router_requests_tls_total | Count | tls_version , tls_cipher , router , service | The total count of HTTPS requests handled by a router. |
traefik_router_request_duration_seconds | Histogram | code , method , protocol , router , service | Request processing duration histogram on a router. |
traefik_router_requests_bytes_total | Count | code , method , protocol , router , service | The total size of HTTP requests in bytes handled by a router. |
traefik_router_responses_bytes_total | Count | code , method , protocol , router , service | The total size of HTTP responses in bytes handled by a router. |
Metric | Type | Labels | Description |
---|---|---|---|
router.requests.total | Count | code , method , protocol , router , service | The total count of HTTP requests handled by a router. |
router.requests.tls.total | Count | tls_version , tls_cipher , router , service | The total count of HTTPS requests handled by a router. |
router.request.duration.seconds | Histogram | code , method , protocol , router , service | Request processing duration histogram on a router. |
router.requests.bytes.total | Count | code , method , protocol , router , service | The total size of HTTP requests in bytes handled by a router. |
router.responses.bytes.total | Count | code , method , protocol , router , service | The total size of HTTP responses in bytes handled by a router. |
Metric | Type | Labels | Description |
---|---|---|---|
traefik.router.requests.total | Count | code , method , protocol , router , service | The total count of HTTP requests handled by a router. |
traefik.router.requests.tls.total | Count | tls_version , tls_cipher , router , service | The total count of HTTPS requests handled by a router. |
traefik.router.request.duration.seconds | Histogram | code , method , protocol , router , service | Request processing duration histogram on a router. |
traefik.router.requests.bytes.total | Count | code , method , protocol , router , service | The total size of HTTP requests in bytes handled by a router. |
traefik.router.responses.bytes.total | Count | code , method , protocol , router , service | The total size of HTTP responses in bytes handled by a router. |
Metric | Type | Labels | Description |
---|---|---|---|
{prefix}.router.requests.total | Count | code , method , protocol , router , service | The total count of HTTP requests handled by a router. |
{prefix}.router.requests.tls.total | Count | tls_version , tls_cipher , router , service | The total count of HTTPS requests handled by a router. |
{prefix}.router.request.duration.seconds | Histogram | code , method , protocol , router , service | Request processing duration histogram on a router. |
{prefix}.router.requests.bytes.total | Count | code , method , protocol , router , service | The total size of HTTP requests in bytes handled by a router. |
{prefix}.router.responses.bytes.total | Count | code , method , protocol , router , service | The total size of HTTP responses in bytes handled by a router. |
By default, {prefix} value is traefik
.
Service Metrics
- OpenTelemetry
- Prometheus
- DataDog
- InfuxDB2
- StatsD
Metric | Type | Labels | Description |
---|---|---|---|
traefik_service_requests_total | Count | code , method , protocol , service | The total count of HTTP requests processed on a service. |
traefik_service_requests_tls_total | Count | tls_version , tls_cipher , service | The total count of HTTPS requests processed on a service. |
traefik_service_request_duration_seconds | Histogram | code , method , protocol , service | Request processing duration histogram on a service. |
traefik_service_retries_total | Count | service | The count of requests retries on a service. |
traefik_service_server_up | Gauge | service , url | Current service's server status, 0 for a down or 1 for up. |
traefik_service_requests_bytes_total | Count | code , method , protocol , service | The total size of requests in bytes received by a service. |
traefik_service_responses_bytes_total | Count | code , method , protocol , service | The total size of responses in bytes returned by a service. |
Metric | Type | Labels | Description |
---|---|---|---|
traefik_service_requests_total | Count | code , method , protocol , service | The total count of HTTP requests processed on a service. |
traefik_service_requests_tls_total | Count | tls_version , tls_cipher , service | The total count of HTTPS requests processed on a service. |
traefik_service_request_duration_seconds | Histogram | code , method , protocol , service | Request processing duration histogram on a service. |
traefik_service_retries_total | Count | service | The count of requests retries on a service. |
traefik_service_server_up | Gauge | service , url | Current service's server status, 0 for a down or 1 for up. |
traefik_service_requests_bytes_total | Count | code , method , protocol , service | The total size of requests in bytes received by a service. |
traefik_service_responses_bytes_total | Count | code , method , protocol , service | The total size of responses in bytes returned by a service. |
Metric | Type | Labels | Description |
---|---|---|---|
service.requests.total | Count | code , method , protocol , service | The total count of HTTP requests processed on a service. |
router.service.tls.total | Count | tls_version , tls_cipher , service | The total count of HTTPS requests processed on a service. |
service.request.duration.seconds | Histogram | code , method , protocol , service | Request processing duration histogram on a service. |
service.retries.total | Count | service | The count of requests retries on a service. |
service.server.up | Gauge | service , url | Current service's server status, 0 for a down or 1 for up. |
service.requests.bytes.total | Count | code , method , protocol , service | The total size of requests in bytes received by a service. |
service.responses.bytes.total | Count | code , method , protocol , service | The total size of responses in bytes returned by a service. |
Metric | Type | Labels | Description |
---|---|---|---|
traefik.service.requests.total | Count | code , method , protocol , service | The total count of HTTP requests processed on a service. |
traefik.service.requests.tls.total | Count | tls_version , tls_cipher , service | The total count of HTTPS requests processed on a service. |
traefik.service.request.duration.seconds | Histogram | code , method , protocol , service | Request processing duration histogram on a service. |
traefik.service.retries.total | Count | service | The count of requests retries on a service. |
traefik.service.server.up | Gauge | service , url | Current service's server status, 0 for a down or 1 for up. |
traefik.service.requests.bytes.total | Count | code , method , protocol , service | The total size of requests in bytes received by a service. |
traefik.service.responses.bytes.total | Count | code , method , protocol , service | The total size of responses in bytes returned by a service. |
Metric | Type | Labels | Description |
---|---|---|---|
{prefix}.service.requests.total | Count | code , method , protocol , service | The total count of HTTP requests processed on a service. |
{prefix}.service.requests.tls.total | Count | tls_version , tls_cipher , service | The total count of HTTPS requests processed on a service. |
{prefix}.service.request.duration.seconds | Histogram | code , method , protocol , service | Request processing duration histogram on a service. |
{prefix}.service.retries.total | Count | service | The count of requests retries on a service. |
{prefix}.service.server.up | Gauge | service , url | Current service's server status, 0 for a down or 1 for up. |
{prefix}.service.requests.bytes.total | Count | code , method , protocol , service | The total size of requests in bytes received by a service. |
{prefix}.service.responses.bytes.total | Count | code , method , protocol , service | The total size of responses in bytes returned by a service. |
By default, {prefix} value is traefik
.
Labels
Here is a comprehensive list of labels that are provided by the metrics:
Label | Description | example |
---|---|---|
cn | Certificate Common Name | "example.com" |
code | Request code | "200" |
entrypoint | Entrypoint that handled the request | "example_entrypoint" |
method | Request Method | "GET" |
protocol | Request protocol | "http" |
router | Router that handled the request | "example_router" |
sans | Certificate Subject Alternative NameS | "example.com" |
serial | Certificate Serial Number | "123..." |
service | Service that handled the request | "example_service@provider" |
tls_cipher | TLS cipher used for the request | "TLS_FALLBACK_SCSV" |
tls_version | TLS version used for the request | "1.0" |
url | Service server url | "http://example.com" |