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Marathon Provider

Traefik can be configured to use Marathon as a provider.

See also Marathon user guide.

Configuration

################################################################
# Mesos/Marathon Provider
################################################################

# Enable Marathon Provider.
[marathon]

# Marathon server endpoint.
# You can also specify multiple endpoint for Marathon:
# endpoint = "http://10.241.1.71:8080,10.241.1.72:8080,10.241.1.73:8080"
#
# Required
# Default: "http://127.0.0.1:8080"
#
endpoint = "http://127.0.0.1:8080"

# Enable watch Marathon changes.
#
# Optional
# Default: true
#
watch = true

# Default base domain used for the frontend rules.
# Can be overridden by setting the "traefik.domain" label on an application.
#
# Required
#
domain = "marathon.localhost"

# Override default configuration template.
# For advanced users :)
#
# Optional
#
# filename = "marathon.tmpl"

# Override template version
# For advanced users :)
#
# Optional
# - "1": previous template version (must be used only with older custom templates, see "filename")
# - "2": current template version (must be used to force template version when "filename" is used)
#
# templateVersion = 2

# Expose Marathon apps by default in Traefik.
#
# Optional
# Default: true
#
# exposedByDefault = false

# Convert Marathon groups to subdomains.
# Default behavior: /foo/bar/myapp => foo-bar-myapp.{defaultDomain}
# with groupsAsSubDomains enabled: /foo/bar/myapp => myapp.bar.foo.{defaultDomain}
#
# Optional
# Default: false
#
# groupsAsSubDomains = true

# Enable compatibility with marathon-lb labels.
#
# Optional
# Default: false
#
# marathonLBCompatibility = true

# Enable filtering using Marathon constraints..
# If enabled, Traefik will read Marathon constraints, as defined in https://mesosphere.github.io/marathon/docs/constraints.html
# Each individual constraint will be treated as a verbatim compounded tag.
# i.e. "rack_id:CLUSTER:rack-1", with all constraint groups concatenated together using ":"
#
# Optional
# Default: false
#
# filterMarathonConstraints = true

# Enable Marathon basic authentication.
#
# Optional
#
#    [marathon.basic]
#    httpBasicAuthUser = "foo"
#    httpBasicPassword = "bar"

# TLS client configuration. https://golang.org/pkg/crypto/tls/#Config
#
# Optional
#
#    [marathon.TLS]
#    CA = "/etc/ssl/ca.crt"
#    Cert = "/etc/ssl/marathon.cert"
#    Key = "/etc/ssl/marathon.key"
#    insecureSkipVerify = true

# DCOSToken for DCOS environment.
# This will override the Authorization header.
#
# Optional
#
# dcosToken = "xxxxxx"

# Override DialerTimeout.
# Amount of time to allow the Marathon provider to wait to open a TCP connection
# to a Marathon master.
# Can be provided in a format supported by [time.ParseDuration](https://golang.org/pkg/time/#ParseDuration) or as raw
# values (digits).
# If no units are provided, the value is parsed assuming seconds.
#
# Optional
# Default: "5s"
#
# dialerTimeout = "5s"

# Override ResponseHeaderTimeout.
# Amount of time to allow the Marathon provider to wait until the first response
# header from the Marathon master is received.
# Can be provided in a format supported by [time.ParseDuration](https://golang.org/pkg/time/#ParseDuration) or as raw
# values (digits).
# If no units are provided, the value is parsed assuming seconds.
#
# Optional
# Default: "60s"
#
# responseHeaderTimeout = "60s"

# Override TLSHandshakeTimeout.
# Amount of time to allow the Marathon provider to wait until the TLS
# handshake completes.
# Can be provided in a format supported by [time.ParseDuration](https://golang.org/pkg/time/#ParseDuration) or as raw
# values (digits).
# If no units are provided, the value is parsed assuming seconds.
#
# Optional
# Default: "5s"
#
# TLSHandshakeTimeout = "5s"

# Set the TCP Keep Alive interval for the Marathon HTTP Client.
# Can be provided in a format supported by [time.ParseDuration](https://golang.org/pkg/time/#ParseDuration) or as raw
# values (digits).
# If no units are provided, the value is parsed assuming seconds.
#
# Optional
# Default: "10s"
#
# keepAlive = "10s"

# By default, a task's IP address (as returned by the Marathon API) is used as
# backend server if an IP-per-task configuration can be found; otherwise, the
# name of the host running the task is used.
# The latter behavior can be enforced by enabling this switch.
#
# Optional
# Default: false
#
# forceTaskHostname = true

# Applications may define readiness checks which are probed by Marathon during
# deployments periodically and the results exposed via the API.
# Enabling the following parameter causes Traefik to filter out tasks
# whose readiness checks have not succeeded.
# Note that the checks are only valid at deployment times.
# See the Marathon guide for details.
#
# Optional
# Default: false
#
# respectReadinessChecks = true

To enable constraints see provider-specific constraints section.

Labels: overriding default behavior

Marathon labels may be used to dynamically change the routing and forwarding behavior.

They may be specified on one of two levels: Application or service.

Application Level

The following labels can be defined on Marathon applications. They adjust the behavior for the entire application.

Label Description
traefik.domain Sets the default base domain used for the frontend rules.
traefik.enable=false Disables this container in Traefik.
traefik.port=80 Registers this port. Useful when the container exposes multiples ports.
traefik.portIndex=1 Registers port by index in the application's ports array. Useful when the application exposes multiple ports.
traefik.protocol=https Overrides the default http protocol.
traefik.weight=10 Assigns this weight to the container.
traefik.backend=foo Gives the name foo to the generated backend for this container.
traefik.backend.buffering.maxRequestBodyBytes=0 See buffering section.
traefik.backend.buffering.maxResponseBodyBytes=0 See buffering section.
traefik.backend.buffering.memRequestBodyBytes=0 See buffering section.
traefik.backend.buffering.memResponseBodyBytes=0 See buffering section.
traefik.backend.buffering.retryExpression=EXPR See buffering section.
traefik.backend.circuitbreaker.expression=EXPR Creates a circuit breaker to be used against the backend
traefik.backend.responseForwarding.flushInterval=10ms Defines the interval between two flushes when forwarding response from backend to client.
traefik.backend.healthcheck.path=/health Enables health check for the backend, hitting the container at path.
traefik.backend.healthcheck.interval=1s Defines the health check interval. (Default: 30s)
traefik.backend.healthcheck.port=8080 Sets a different port for the health check.
traefik.backend.healthcheck.scheme=http Overrides the server URL scheme.
traefik.backend.healthcheck.hostname=foobar.com Defines the health check hostname.
traefik.backend.healthcheck.headers=EXPR Defines the health check request headers
Format: HEADER:value||HEADER2:value2
traefik.backend.loadbalancer.method=drr Overrides the default wrr load balancer algorithm
traefik.backend.loadbalancer.stickiness=true Enables backend sticky sessions
traefik.backend.loadbalancer.stickiness.cookieName=NAME Sets the cookie name manually for sticky sessions
traefik.backend.loadbalancer.sticky=true Enables backend sticky sessions (DEPRECATED)
traefik.backend.maxconn.amount=10 Sets a maximum number of connections to the backend.
Must be used in conjunction with the below label to take effect.
traefik.backend.maxconn.extractorfunc=client.ip Sets the function to be used against the request to determine what to limit maximum connections to the backend by.
Must be used in conjunction with the above label to take effect.
traefik.frontend.auth.basic=EXPR Sets basic authentication to this frontend in CSV format: User:Hash,User:Hash (DEPRECATED).
traefik.frontend.auth.basic.removeHeader=true If set to true, removes the Authorization header.
traefik.frontend.auth.basic.users=EXPR Sets basic authentication to this frontend in CSV format: User:Hash,User:Hash.
traefik.frontend.auth.basic.usersFile=/path/.htpasswd Sets basic authentication with an external file; if users and usersFile are provided, both are merged, with external file contents having precedence.
traefik.frontend.auth.digest.removeHeader=true If set to true, removes the Authorization header.
traefik.frontend.auth.digest.users=EXPR Sets digest authentication to this frontend in CSV format: User:Realm:Hash,User:Realm:Hash.
traefik.frontend.auth.digest.usersFile=/path/.htdigest Sets digest authentication with an external file; if users and usersFile are provided, both are merged, with external file contents having precedence.
traefik.frontend.auth.forward.address=https://example.com Sets the URL of the authentication server.
traefik.frontend.auth.forward.authResponseHeaders=EXPR Sets the forward authentication authResponseHeaders in CSV format: X-Auth-User,X-Auth-Header
traefik.frontend.auth.forward.tls.ca=/path/ca.pem Sets the Certificate Authority (CA) for the TLS connection with the authentication server.
traefik.frontend.auth.forward.tls.caOptional=true Checks the certificates if present but do not force to be signed by a specified Certificate Authority (CA).
traefik.frontend.auth.forward.tls.cert=/path/server.pem Sets the Certificate for the TLS connection with the authentication server.
traefik.frontend.auth.forward.tls.insecureSkipVerify=true If set to true invalid SSL certificates are accepted.
traefik.frontend.auth.forward.tls.key=/path/server.key Sets the Certificate for the TLS connection with the authentication server.
traefik.frontend.auth.forward.trustForwardHeader=true Trusts X-Forwarded-* headers.
traefik.frontend.auth.headerField=X-WebAuth-User Sets the header used to pass the authenticated user to the application.
traefik.frontend.auth.removeHeader=true If set to true, removes the Authorization header.
traefik.frontend.entryPoints=http,https Assigns this frontend to entry points http and https.
Overrides defaultEntryPoints
traefik.frontend.errors.<name>.backend=NAME See custom error pages section.
traefik.frontend.errors.<name>.query=PATH See custom error pages section.
traefik.frontend.errors.<name>.status=RANGE See custom error pages section.
traefik.frontend.passHostHeader=true Forwards client Host header to the backend.
traefik.frontend.passTLSClientCert.infos.notAfter=true Add the noAfter field in a escaped client infos in the X-Forwarded-Ssl-Client-Cert-Infos header.
traefik.frontend.passTLSClientCert.infos.notBefore=true Add the noBefore field in a escaped client infos in the X-Forwarded-Ssl-Client-Cert-Infos header.
traefik.frontend.passTLSClientCert.infos.sans=true Add the sans field in a escaped client infos in the X-Forwarded-Ssl-Client-Cert-Infos header.
traefik.frontend.passTLSClientCert.infos.subject.commonName=true Add the subject.commonName field in a escaped client infos in the X-Forwarded-Ssl-Client-Cert-Infos header.
traefik.frontend.passTLSClientCert.infos.subject.country=true Add the subject.country field in a escaped client infos in the X-Forwarded-Ssl-Client-Cert-Infos header.
traefik.frontend.passTLSClientCert.infos.subject.locality=true Add the subject.locality field in a escaped client infos in the X-Forwarded-Ssl-Client-Cert-Infos header.
traefik.frontend.passTLSClientCert.infos.subject.organization=true Add the subject.organization field in a escaped client infos in the X-Forwarded-Ssl-Client-Cert-Infos header.
traefik.frontend.passTLSClientCert.infos.subject.province=true Add the subject.province field in a escaped client infos in the X-Forwarded-Ssl-Client-Cert-Infos header.
traefik.frontend.passTLSClientCert.infos.subject.serialNumber=true Add the subject.serialNumber field in a escaped client infos in the X-Forwarded-Ssl-Client-Cert-Infos header.
traefik.frontend.passTLSClientCert.pem=true Pass the escaped pem in the X-Forwarded-Ssl-Client-Cert header.
traefik.frontend.passTLSCert=true Forwards TLS Client certificates to the backend.
traefik.frontend.priority=10 Overrides default frontend priority
traefik.frontend.rateLimit.extractorFunc=EXP See rate limiting section.
traefik.frontend.rateLimit.rateSet.<name>.period=6 See rate limiting section.
traefik.frontend.rateLimit.rateSet.<name>.average=6 See rate limiting section.
traefik.frontend.rateLimit.rateSet.<name>.burst=6 See rate limiting section.
traefik.frontend.redirect.entryPoint=https Enables Redirect to another entryPoint to this frontend (e.g. HTTPS)
traefik.frontend.redirect.regex=^http://localhost/(.*) Redirects to another URL to this frontend.
Must be set with traefik.frontend.redirect.replacement.
traefik.frontend.redirect.replacement=http://mydomain/$1 Redirects to another URL to this frontend.
Must be set with traefik.frontend.redirect.regex.
traefik.frontend.redirect.permanent=true Returns 301 instead of 302.
traefik.frontend.rule=EXPR Overrides the default frontend rule. Default: Host:{sub_domain}.{domain}.
traefik.frontend.whiteList.sourceRange=RANGE Sets a list of IP-Ranges which are allowed to access.
An unset or empty list allows all Source-IPs to access. If one of the Net-Specifications are invalid, the whole list is invalid and allows all Source-IPs to access.
traefik.frontend.whiteList.useXForwardedFor=true Uses X-Forwarded-For header as valid source of IP for the white list.

Custom Headers

Label Description
traefik.frontend.headers.customRequestHeaders=EXPR Provides the container with custom request headers that will be appended to each request forwarded to the container.
Format: HEADER:value||HEADER2:value2
traefik.frontend.headers.customResponseHeaders=EXPR Appends the headers to each response returned by the container, before forwarding the response to the client.
Format: HEADER:value||HEADER2:value2

Security Headers

Label Description
traefik.frontend.headers.allowedHosts=EXPR Provides a list of allowed hosts that requests will be processed.
Format: Host1,Host2
traefik.frontend.headers.browserXSSFilter=true Adds the X-XSS-Protection header with the value 1; mode=block.
traefik.frontend.headers.contentSecurityPolicy=VALUE Adds CSP Header with the custom value.
traefik.frontend.headers.contentTypeNosniff=true Adds the X-Content-Type-Options header with the value nosniff.
traefik.frontend.headers.customBrowserXSSValue=VALUE Set custom value for X-XSS-Protection header. This overrides the BrowserXssFilter option.
traefik.frontend.headers.customFrameOptionsValue=VALUE Overrides the X-Frame-Options header with the custom value.
traefik.frontend.headers.forceSTSHeader=false Adds the STS header to non-SSL requests.
traefik.frontend.headers.frameDeny=false Adds the X-Frame-Options header with the value of DENY.
traefik.frontend.headers.hostsProxyHeaders=EXPR Provides a list of headers that the proxied hostname may be stored.
Format: HEADER1,HEADER2
traefik.frontend.headers.isDevelopment=false This will cause the AllowedHosts, SSLRedirect, and STSSeconds/STSIncludeSubdomains options to be ignored during development.
When deploying to production, be sure to set this to false.
traefik.frontend.headers.publicKey=VALUE Adds HPKP header.
traefik.frontend.headers.referrerPolicy=VALUE Adds referrer policy header.
traefik.frontend.headers.SSLRedirect=true Forces the frontend to redirect to SSL if a non-SSL request is sent.
traefik.frontend.headers.SSLTemporaryRedirect=true Forces the frontend to redirect to SSL if a non-SSL request is sent, but by sending a 302 instead of a 301.
traefik.frontend.headers.SSLHost=HOST This setting configures the hostname that redirects will be based on. Default is "", which is the same host as the request.
traefik.frontend.headers.SSLForceHost=true If SSLForceHost is true and SSLHost is set, requests will be forced to use SSLHost even the ones that are already using SSL. Default is false.
traefik.frontend.headers.SSLProxyHeaders=EXPR Header combinations that would signify a proper SSL Request (Such as X-Forwarded-For:https).
Format: HEADER:value||HEADER2:value2
traefik.frontend.headers.STSSeconds=315360000 Sets the max-age of the STS header.
traefik.frontend.headers.STSIncludeSubdomains=true Adds the IncludeSubdomains section of the STS header.
traefik.frontend.headers.STSPreload=true Adds the preload flag to the STS header.

Applications with Multiple Ports (segment labels)

Segment labels are used to define routes to an application exposing multiple ports. A segment is a group of labels that apply to a port exposed by an application. You can define as many segments as ports exposed in an application.

Segment labels override the default behavior.

Label Description
traefik.<segment_name>.backend=BACKEND Same as traefik.backend
traefik.<segment_name>.domain=DOMAIN Same as traefik.domain
traefik.<segment_name>.portIndex=1 Same as traefik.portIndex
traefik.<segment_name>.port=PORT Same as traefik.port
traefik.<segment_name>.protocol=http Same as traefik.protocol
traefik.<segment_name>.weight=10 Same as traefik.weight
traefik.<segment_name>.frontend.auth.basic=EXPR Same as traefik.frontend.auth.basic
traefik.<segment_name>.frontend.auth.basic.removeHeader=true Same as traefik.frontend.auth.basic.removeHeader
traefik.<segment_name>.frontend.auth.basic.users=EXPR Same as traefik.frontend.auth.basic.users
traefik.<segment_name>.frontend.auth.basic.usersFile=/path/.htpasswd Same as traefik.frontend.auth.basic.usersFile
traefik.<segment_name>.frontend.auth.digest.removeHeader=true Same as traefik.frontend.auth.digest.removeHeader
traefik.<segment_name>.frontend.auth.digest.users=EXPR Same as traefik.frontend.auth.digest.users
traefik.<segment_name>.frontend.auth.digest.usersFile=/path/.htdigest Same as traefik.frontend.auth.digest.usersFile
traefik.<segment_name>.frontend.auth.forward.address=https://example.com Same as traefik.frontend.auth.forward.address
traefik.<segment_name>.frontend.auth.forward.authResponseHeaders=EXPR Same as traefik.frontend.auth.forward.authResponseHeaders
traefik.<segment_name>.frontend.auth.forward.tls.ca=/path/ca.pem Same as traefik.frontend.auth.forward.tls.ca
traefik.<segment_name>.frontend.auth.forward.tls.caOptional=true Same as traefik.frontend.auth.forward.tls.caOptional
traefik.<segment_name>.frontend.auth.forward.tls.cert=/path/server.pem Same as traefik.frontend.auth.forward.tls.cert
traefik.<segment_name>.frontend.auth.forward.tls.insecureSkipVerify=true Same as traefik.frontend.auth.forward.tls.insecureSkipVerify
traefik.<segment_name>.frontend.auth.forward.tls.key=/path/server.key Same as traefik.frontend.auth.forward.tls.key
traefik.<segment_name>.frontend.auth.forward.trustForwardHeader=true Same as traefik.frontend.auth.forward.trustForwardHeader
traefik.<segment_name>.frontend.auth.headerField=X-WebAuth-User Same as traefik.frontend.auth.headerField
traefik.<segment_name>.frontend.auth.removeHeader=true Same as traefik.frontend.auth.removeHeader
traefik.<segment_name>.frontend.entryPoints=https Same as traefik.frontend.entryPoints
traefik.<segment_name>.frontend.errors.<name>.backend=NAME Same as traefik.frontend.errors.<name>.backend
traefik.<segment_name>.frontend.errors.<name>.query=PATH Same as traefik.frontend.errors.<name>.query
traefik.<segment_name>.frontend.errors.<name>.status=RANGE Same as traefik.frontend.errors.<name>.status
traefik.<segment_name>.frontend.passHostHeader=true Same as traefik.frontend.passHostHeader
traefik.<segment_name>.frontend.passTLSClientCert.infos.notAfter=true Same as traefik.frontend.passTLSClientCert.infos.notAfter
traefik.<segment_name>.frontend.passTLSClientCert.infos.notBefore=true Same as traefik.frontend.passTLSClientCert.infos.notBefore
traefik.<segment_name>.frontend.passTLSClientCert.infos.sans=true Same as traefik.frontend.passTLSClientCert.infos.sans
traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.commonName=true Same as traefik.frontend.passTLSClientCert.infos.subject.commonName
traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.country=true Same as traefik.frontend.passTLSClientCert.infos.subject.country
traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.locality=true Same as traefik.frontend.passTLSClientCert.infos.subject.locality
traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.organization=true Same as traefik.frontend.passTLSClientCert.infos.subject.organization
traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.province=true Same as traefik.frontend.passTLSClientCert.infos.subject.province
traefik.<segment_name>.frontend.passTLSClientCert.infos.subject.serialNumber=true Same as traefik.frontend.passTLSClientCert.infos.subject.serialNumber
traefik.<segment_name>.frontend.passTLSClientCert.pem=true Same as traefik.frontend.passTLSClientCert.infos.pem
traefik.<segment_name>.frontend.passTLSCert=true Same as traefik.frontend.passTLSCert
traefik.<segment_name>.frontend.priority=10 Same as traefik.frontend.priority
traefik.<segment_name>.frontend.rateLimit.extractorFunc=EXP Same as traefik.frontend.rateLimit.extractorFunc
traefik.<segment_name>.frontend.rateLimit.rateSet.<name>.period=6 Same as traefik.frontend.rateLimit.rateSet.<name>.period
traefik.<segment_name>.frontend.rateLimit.rateSet.<name>.average=6 Same as traefik.frontend.rateLimit.rateSet.<name>.average
traefik.<segment_name>.frontend.rateLimit.rateSet.<name>.burst=6 Same as traefik.frontend.rateLimit.rateSet.<name>.burst
traefik.<segment_name>.frontend.redirect.entryPoint=https Same as traefik.frontend.redirect.entryPoint
traefik.<segment_name>.frontend.redirect.regex=^http://localhost/(.*) Same as traefik.frontend.redirect.regex
traefik.<segment_name>.frontend.redirect.replacement=http://mydomain/$1 Same as traefik.frontend.redirect.replacement
traefik.<segment_name>.frontend.redirect.permanent=true Same as traefik.frontend.redirect.permanent
traefik.<segment_name>.frontend.rule=EXP Same as traefik.frontend.rule
traefik.<segment_name>.frontend.whiteList.sourceRange=RANGE Same as traefik.frontend.whiteList.sourceRange
traefik.<segment_name>.frontend.whiteList.useXForwardedFor=true Same as traefik.frontend.whiteList.useXForwardedFor

Custom Headers

Label Description
traefik.<segment_name>.frontend.headers.customRequestHeaders=EXPR Same as traefik.frontend.headers.customRequestHeaders
traefik.<segment_name>.frontend.headers.customResponseHeaders=EXPR Same as traefik.frontend.headers.customResponseHeaders

Security Headers

Label Description
traefik.<segment_name>.frontend.headers.allowedHosts=EXPR Same as traefik.frontend.headers.allowedHosts
traefik.<segment_name>.frontend.headers.browserXSSFilter=true Same as traefik.frontend.headers.browserXSSFilter
traefik.<segment_name>.frontend.headers.contentSecurityPolicy=VALUE Same as traefik.frontend.headers.contentSecurityPolicy
traefik.<segment_name>.frontend.headers.contentTypeNosniff=true Same as traefik.frontend.headers.contentTypeNosniff
traefik.<segment_name>.frontend.headers.customBrowserXSSValue=VALUE Same as traefik.frontend.headers.customBrowserXSSValue
traefik.<segment_name>.frontend.headers.customFrameOptionsValue=VALUE Same as traefik.frontend.headers.customFrameOptionsValue
traefik.<segment_name>.frontend.headers.forceSTSHeader=false Same as traefik.frontend.headers.forceSTSHeader
traefik.<segment_name>.frontend.headers.frameDeny=false Same as traefik.frontend.headers.frameDeny
traefik.<segment_name>.frontend.headers.hostsProxyHeaders=EXPR Same as traefik.frontend.headers.hostsProxyHeaders
traefik.<segment_name>.frontend.headers.isDevelopment=false Same as traefik.frontend.headers.isDevelopment
traefik.<segment_name>.frontend.headers.publicKey=VALUE Same as traefik.frontend.headers.publicKey
traefik.<segment_name>.frontend.headers.referrerPolicy=VALUE Same as traefik.frontend.headers.referrerPolicy
traefik.<segment_name>.frontend.headers.SSLRedirect=true Same as traefik.frontend.headers.SSLRedirect
traefik.<segment_name>.frontend.headers.SSLTemporaryRedirect=true Same as traefik.frontend.headers.SSLTemporaryRedirect
traefik.<segment_name>.frontend.headers.SSLHost=HOST Same as traefik.frontend.headers.SSLHost
traefik.<segment_name>.frontend.headers.SSLForceHost=true Same as traefik.frontend.headers.SSLForceHost
traefik.<segment_name>.frontend.headers.SSLProxyHeaders=EXPR Same as traefik.frontend.headers.SSLProxyHeaders=EXPR
traefik.<segment_name>.frontend.headers.STSSeconds=315360000 Same as traefik.frontend.headers.STSSeconds=315360000
traefik.<segment_name>.frontend.headers.STSIncludeSubdomains=true Same as traefik.frontend.headers.STSIncludeSubdomains=true
traefik.<segment_name>.frontend.headers.STSPreload=true Same as traefik.frontend.headers.STSPreload=true