traefik/docs/configuration/backends/marathon.md

Marathon Backend

Træfik can be configured to use Marathon as a backend configuration.

See also Marathon user guide.

Configuration

################################################################
# Mesos/Marathon configuration backend
################################################################

# Enable Marathon configuration backend.
[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 domain used.
# 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"

# 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: "60s"
#
# dialerTimeout = "60s"

# 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 backend-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.enable=false	Disable this container in Træfik
traefik.port=80	Register this port. Useful when the container exposes multiples ports.
traefik.portIndex=1	Register port by index in the application's ports array. Useful when the application exposes multiple ports.
traefik.protocol=https	Override the default http protocol
traefik.weight=10	Assign this weight to the container
traefik.backend=foo	Give 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	Create a circuit breaker to be used against the backend
traefik.backend.healthcheck.path=/health	Enable health check for the backend, hitting the container at path.
traefik.backend.healthcheck.port=8080	Allow to use a different port for the health check.
traefik.backend.healthcheck.interval=1s	Define the health check interval. (Default: 30s)
traefik.backend.loadbalancer.method=drr	Override the default wrr load balancer algorithm
traefik.backend.loadbalancer.stickiness=true	Enable backend sticky sessions
traefik.backend.loadbalancer.stickiness.cookieName=NAME	Manually set the cookie name for sticky sessions
traefik.backend.loadbalancer.sticky=true	Enable backend sticky sessions (DEPRECATED)
traefik.backend.maxconn.amount=10	Set 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	Set 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 for that frontend in CSV format: User:Hash,User:Hash
traefik.frontend.entryPoints=http,https	Assign 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	Forward client Host header to the backend.
traefik.frontend.passTLSCert=true	Forward TLS Client certificates to the backend.
traefik.frontend.priority=10	Override 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 for that frontend (e.g. HTTPS)
traefik.frontend.redirect.regex=^http://localhost/(.*)	Redirect to another URL for that frontend. Must be set with traefik.frontend.redirect.replacement.
traefik.frontend.redirect.replacement=http://mydomain/$1	Redirect to another URL for that frontend. Must be set with traefik.frontend.redirect.regex.
traefik.frontend.redirect.permanent=true	Return 301 instead of 302.
traefik.frontend.rule=EXPR	Override the default frontend rule. Default: Host:{sub_domain}.{domain}.
traefik.frontend.whiteList.sourceRange=RANGE	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	Use 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.hostsProxyHeaders=EXPR	Provides a list of headers that the proxied hostname may be stored. Format: HEADER1,HEADER2
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.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.
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.customFrameOptionsValue=VALUE	Overrides the X-Frame-Options header with the custom value.
traefik.frontend.headers.contentTypeNosniff=true	Adds the X-Content-Type-Options header with the value nosniff.
traefik.frontend.headers.browserXSSFilter=true	Adds the X-XSS-Protection header with the value 1; mode=block.
traefik.frontend.headers.customBrowserXSSValue=VALUE	Set custom value for X-XSS-Protection header. This overrides the BrowserXssFilter option.
traefik.frontend.headers.contentSecurityPolicy=VALUE	Adds CSP Header with the custom value.
traefik.frontend.headers.publicKey=VALUE	Adds pinned HTST public key header.
traefik.frontend.headers.referrerPolicy=VALUE	Adds referrer policy header.
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.

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.

Label	Description
traefik.<segment_name>.portIndex=1	Create a service binding with frontend/backend using this port index. Overrides traefik.portIndex.
traefik.<segment_name>.port=PORT	Overrides traefik.port. If several ports need to be exposed, the service labels could be used.
traefik.<segment_name>.protocol=http	Overrides traefik.protocol.
traefik.<segment_name>.weight=10	Assign this service weight. Overrides traefik.weight.
traefik.<segment_name>.frontend.auth.basic=EXPR	Sets a Basic Auth for that frontend
traefik.<segment_name>.frontend.backend=BACKEND	Assign this service frontend to BACKEND. Default is to assign to the service backend.
traefik.<segment_name>.frontend.entryPoints=https	Overrides traefik.frontend.entrypoints
traefik.<segment_name>.frontend.errors.<name>.backend=NAME	See custom error pages section.
traefik.<segment_name>.frontend.errors.<name>.query=PATH	See custom error pages section.
traefik.<segment_name>.frontend.errors.<name>.status=RANGE	See custom error pages section.
traefik.<segment_name>.frontend.passHostHeader=true	Overrides traefik.frontend.passHostHeader.
traefik.<segment_name>.frontend.passTLSCert=true	Overrides traefik.frontend.passTLSCert.
traefik.<segment_name>.frontend.priority=10	Overrides traefik.frontend.priority.
traefik.<segment_name>.frontend.rateLimit.extractorFunc=EXP	See rate limiting section.
traefik.<segment_name>.frontend.rateLimit.rateSet.<name>.period=6	See rate limiting section.
traefik.<segment_name>.frontend.rateLimit.rateSet.<name>.average=6	See rate limiting section.
traefik.<segment_name>.frontend.rateLimit.rateSet.<name>.burst=6	See rate limiting section.
traefik.<segment_name>.frontend.redirect.entryPoint=https	Overrides traefik.frontend.redirect.entryPoint.
traefik.<segment_name>.frontend.redirect.regex=^http://localhost/(.*)	Overrides traefik.frontend.redirect.regex.
traefik.<segment_name>.frontend.redirect.replacement=http://mydomain/$1	Overrides traefik.frontend.redirect.replacement.
traefik.<segment_name>.frontend.redirect.permanent=true	Return 301 instead of 302.
traefik.<segment_name>.frontend.rule=EXP	Overrides traefik.frontend.rule. Default: {service_name}.{sub_domain}.{domain}
traefik.<segment_name>.frontend.whitelistSourceRange=RANGE	Overrides traefik.frontend.whitelistSourceRange.
traefik.<segment_name>.frontend.whiteList.sourceRange=RANGE	Overrides traefik.frontend.whiteList.sourceRange.
traefik.<segment_name>.frontend.whiteList.useXForwardedFor=true	Use X-Forwarded-For header as valid source of IP for the white list.

Custom Headers

Label	Description
traefik.<segment_name>.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.<segment_name>.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.<segment_name>.frontend.headers.allowedHosts=EXPR	Provides a list of allowed hosts that requests will be processed. Format: Host1,Host2
traefik.<segment_name>.frontend.headers.hostsProxyHeaders=EXPR	Provides a list of headers that the proxied hostname may be stored. Format: HEADER1,HEADER2
traefik.<segment_name>.frontend.headers.SSLRedirect=true	Forces the frontend to redirect to SSL if a non-SSL request is sent.
traefik.<segment_name>.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.<segment_name>.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.<segment_name>.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.<segment_name>.frontend.headers.STSSeconds=315360000	Sets the max-age of the STS header.
traefik.<segment_name>.frontend.headers.STSIncludeSubdomains=true	Adds the IncludeSubdomains section of the STS header.
traefik.<segment_name>.frontend.headers.STSPreload=true	Adds the preload flag to the STS header.
traefik.<segment_name>.frontend.headers.forceSTSHeader=false	Adds the STS header to non-SSL requests.
traefik.<segment_name>.frontend.headers.frameDeny=false	Adds the X-Frame-Options header with the value of DENY.
traefik.<segment_name>.frontend.headers.customFrameOptionsValue=VALUE	Overrides the X-Frame-Options header with the custom value.
traefik.<segment_name>.frontend.headers.contentTypeNosniff=true	Adds the X-Content-Type-Options header with the value nosniff.
traefik.<segment_name>.frontend.headers.browserXSSFilter=true	Adds the X-XSS-Protection header with the value 1; mode=block.
traefik.<segment_name>.frontend.headers.customBrowserXSSValue=VALUE	Set custom value for X-XSS-Protection header. This overrides the BrowserXssFilter option.
traefik.<segment_name>.frontend.headers.contentSecurityPolicy=VALUE	Adds CSP Header with the custom value.
traefik.<segment_name>.frontend.headers.publicKey=VALUE	Adds pinned HTST public key header.
traefik.<segment_name>.frontend.headers.referrerPolicy=VALUE	Adds referrer policy header.
traefik.<segment_name>.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.