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traefik/docs/configuration/backends/rancher.md
Daniel Tomcej 190ebbed27 Update docs to reflect Provider wording
2018-05-16 19:48:03 +02:00

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Rancher Provider

Træfik can be configured to use Rancher as a provider.

Global Configuration

################################################################
# Rancher Provider
################################################################

# Enable Rancher Provider.
[rancher]

# Default domain used.
# Can be overridden by setting the "traefik.domain" label on an service.
#
# Required
#
domain = "rancher.localhost"

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

# Polling interval (in seconds).
#
# Optional
# Default: 15
#
refreshSeconds = 15

# Expose Rancher services by default in Traefik.
#
# Optional
# Default: true
#
exposedByDefault = false

# Filter services with unhealthy states and inactive states.
#
# Optional
# Default: false
#
enableServiceHealthFilter = true

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

To enable constraints see provider-specific constraints section.

Rancher Metadata Service

# Enable Rancher metadata service provider instead of the API
# provider.
#
# Optional
# Default: false
#
[rancher.metadata]

# Poll the Rancher metadata service for changes every `rancher.refreshSeconds`.
# NOTE: this is less accurate than the default long polling technique which
# will provide near instantaneous updates to Traefik
#
# Optional
# Default: false
#
intervalPoll = true

# Prefix used for accessing the Rancher metadata service.
#
# Optional
# Default: "/latest"
#
prefix = "/2016-07-29"

Rancher API

# Enable Rancher API provider.
#
# Optional
# Default: true
#
[rancher.api]

# Endpoint to use when connecting to the Rancher API.
#
# Required
endpoint = "http://rancherserver.example.com/v1"

# AccessKey to use when connecting to the Rancher API.
#
# Required
accessKey = "XXXXXXXXXXXXXXXXXXXX"

# SecretKey to use when connecting to the Rancher API.
#
# Required
secretKey = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"

!!! note If Traefik needs access to the Rancher API, you need to set the endpoint, accesskey and secretkey parameters.

To enable Traefik to fetch information about the Environment it's deployed in only, you need to create an `Environment API Key`.
This can be found within the API Key advanced options.

Add these labels to traefik docker deployment to autogenerated these values:
```
io.rancher.container.agent.role: environment
io.rancher.container.create_agent: true
```

Labels: overriding default behavior

On Containers

Labels can be used on task containers to override default behavior:

Label Description
traefik.domain Default domain used for frontend rules.
traefik.enable=false Disable this container in Træfik
traefik.port=80 Register this port. Useful when the container exposes multiples 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.
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:{service_name}.{stack_name}.{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.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 pinned HTST public key 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.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.

On containers with Multiple Ports (segment labels)

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

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>.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.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.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 overrides traefik.frontend.headers.customRequestHeaders
traefik.<segment_name>.frontend.headers.customResponseHeaders=EXPR overrides traefik.frontend.headers.customResponseHeaders

Security Headers

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