311 lines
35 KiB
Markdown
311 lines
35 KiB
Markdown
# Rancher Provider
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Træfik can be configured to use Rancher as a provider.
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## Global Configuration
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```toml
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################################################################
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# Rancher Provider
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################################################################
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# Enable Rancher Provider.
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[rancher]
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# Default domain used.
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# Can be overridden by setting the "traefik.domain" label on an service.
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#
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# Required
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#
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domain = "rancher.localhost"
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# Enable watch Rancher changes.
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#
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# Optional
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# Default: true
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#
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watch = true
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# Polling interval (in seconds).
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#
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# Optional
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# Default: 15
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#
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refreshSeconds = 15
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# Expose Rancher services by default in Traefik.
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#
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# Optional
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# Default: true
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#
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exposedByDefault = false
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# Filter services with unhealthy states and inactive states.
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#
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# Optional
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# Default: false
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#
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enableServiceHealthFilter = true
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# Override default configuration template.
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# For advanced users :)
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#
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# Optional
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#
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# filename = "rancher.tmpl"
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# Override template version
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# For advanced users :)
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#
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# Optional
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# - "1": previous template version (must be used only with older custom templates, see "filename")
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# - "2": current template version (must be used to force template version when "filename" is used)
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#
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# templateVersion = 2
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```
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To enable constraints see [provider-specific constraints section](/configuration/commons/#provider-specific).
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## Rancher Metadata Service
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```toml
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# Enable Rancher metadata service provider instead of the API
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# provider.
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#
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# Optional
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# Default: false
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#
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[rancher.metadata]
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# Poll the Rancher metadata service for changes every `rancher.refreshSeconds`.
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# NOTE: this is less accurate than the default long polling technique which
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# will provide near instantaneous updates to Traefik
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#
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# Optional
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# Default: false
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#
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intervalPoll = true
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# Prefix used for accessing the Rancher metadata service.
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#
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# Optional
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# Default: "/latest"
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#
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prefix = "/2016-07-29"
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```
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## Rancher API
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```toml
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# Enable Rancher API provider.
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#
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# Optional
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# Default: true
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#
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[rancher.api]
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# Endpoint to use when connecting to the Rancher API.
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#
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# Required
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endpoint = "http://rancherserver.example.com/v1"
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# AccessKey to use when connecting to the Rancher API.
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#
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# Required
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accessKey = "XXXXXXXXXXXXXXXXXXXX"
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# SecretKey to use when connecting to the Rancher API.
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#
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# Required
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secretKey = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
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```
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!!! note
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If Traefik needs access to the Rancher API, you need to set the `endpoint`, `accesskey` and `secretkey` parameters.
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To enable Traefik to fetch information about the Environment it's deployed in only, you need to create an `Environment API Key`.
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This can be found within the API Key advanced options.
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Add these labels to traefik docker deployment to autogenerated these values:
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```
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io.rancher.container.agent.role: environment
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io.rancher.container.create_agent: true
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```
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## Labels: overriding default behavior
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### On Containers
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Labels can be used on task containers to override default behavior:
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| Label | Description |
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|------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| `traefik.domain` | Sets the default domain for the frontend rules. |
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| `traefik.enable=false` | Disables this container in Træfik. |
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| `traefik.port=80` | Registers this port. Useful when the container exposes multiple ports. |
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| `traefik.protocol=https` | Overrides the default `http` protocol. |
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| `traefik.weight=10` | Assigns this weight to the container. |
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| `traefik.backend=foo` | Gives the name `foo` to the generated backend for this container. |
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| `traefik.backend.buffering.maxRequestBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
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| `traefik.backend.buffering.maxResponseBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
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| `traefik.backend.buffering.memRequestBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
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| `traefik.backend.buffering.memResponseBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
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| `traefik.backend.buffering.retryExpression=EXPR` | See [buffering](/configuration/commons/#buffering) section. |
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| `traefik.backend.circuitbreaker.expression=EXPR` | Creates a [circuit breaker](/basics/#backends) to be used against the backend |
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| `traefik.backend.healthcheck.path=/health` | Enables health check for the backend, hitting the container at `path`. |
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| `traefik.backend.healthcheck.interval=1s` | Defines the health check interval. |
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| `traefik.backend.healthcheck.port=8080` | Sets a different port for the health check. |
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| `traefik.backend.healthcheck.scheme=http` | Overrides the server URL scheme. |
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| `traefik.backend.healthcheck.hostname=foobar.com` | Defines the health check hostname. |
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| `traefik.backend.healthcheck.headers=EXPR` | Defines the health check request headers <br>Format: <code>HEADER:value||HEADER2:value2</code> |
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| `traefik.backend.loadbalancer.method=drr` | Overrides the default `wrr` load balancer algorithm |
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| `traefik.backend.loadbalancer.stickiness=true` | Enables backend sticky sessions |
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| `traefik.backend.loadbalancer.stickiness.cookieName=NAME` | Sets the cookie name manually for sticky sessions |
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| `traefik.backend.maxconn.amount=10` | Sets a maximum number of connections to the backend.<br>Must be used in conjunction with the below label to take effect. |
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| `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.<br>Must be used in conjunction with the above label to take effect. |
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| `traefik.frontend.auth.basic=EXPR` | Sets the basic authentication to this frontend in CSV format: `User:Hash,User:Hash` (DEPRECATED). |
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| `traefik.frontend.auth.basic.removeHeader=true` | If set to `true`, removes the `Authorization` header. |
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| `traefik.frontend.auth.basic.users=EXPR` | Sets the basic authentication to this frontend in CSV format: `User:Hash,User:Hash` . |
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| `traefik.frontend.auth.basic.usersfile=/path/.htpasswd` | Sets the basic authentication with an external file; if users and usersFile are provided, both are merged, with external file contents having precedence. |
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| `traefik.frontend.auth.digest.removeHeader=true` | If set to `true`, removes the `Authorization` header. |
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| `traefik.frontend.auth.digest.users=EXPR` | Sets the digest authentication to this frontend in CSV format: `User:Realm:Hash,User:Realm:Hash`. |
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| `traefik.frontend.auth.digest.usersfile=/path/.htdigest` | Sets the digest authentication with an external file; if users and usersFile are provided, both are merged, with external file contents having precedence. |
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| `traefik.frontend.auth.forward.address=https://example.com`| Sets the URL of the authentication server. |
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| `traefik.frontend.auth.forward.tls.ca=/path/ca.pem` | Sets the Certificate Authority (CA) for the TLS connection with the authentication server. |
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| `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). |
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| `traefik.frontend.auth.forward.tls.cert=/path/server.pem` | Sets the Certificate for the TLS connection with the authentication server. |
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| `traefik.frontend.auth.forward.tls.insecureSkipVerify=true`| If set to true invalid SSL certificates are accepted. |
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| `traefik.frontend.auth.forward.tls.key=/path/server.key` | Sets the Certificate for the TLS connection with the authentication server. |
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| `traefik.frontend.auth.forward.trustForwardHeader=true` | Trusts X-Forwarded-* headers. |
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| `traefik.frontend.auth.headerField=X-WebAuth-User` | Sets the header used to pass the authenticated user to the application. |
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| `traefik.frontend.entryPoints=http,https` | Assigns this frontend to entry points `http` and `https`.<br>Overrides `defaultEntryPoints` |
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| `traefik.frontend.errors.<name>.backend=NAME` | See [custom error pages](/configuration/commons/#custom-error-pages) section. |
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| `traefik.frontend.errors.<name>.query=PATH` | See [custom error pages](/configuration/commons/#custom-error-pages) section. |
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| `traefik.frontend.errors.<name>.status=RANGE` | See [custom error pages](/configuration/commons/#custom-error-pages) section. |
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| `traefik.frontend.passHostHeader=true` | Forwards client `Host` header to the backend. |
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| `traefik.frontend.passTLSCert=true` | Forwards TLS Client certificates to the backend. |
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| `traefik.frontend.priority=10` | Overrides default frontend priority |
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| `traefik.frontend.rateLimit.extractorFunc=EXP` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
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| `traefik.frontend.rateLimit.rateSet.<name>.period=6` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
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| `traefik.frontend.rateLimit.rateSet.<name>.average=6` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
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| `traefik.frontend.rateLimit.rateSet.<name>.burst=6` | See [rate limiting](/configuration/commons/#rate-limiting) section. |
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| `traefik.frontend.redirect.entryPoint=https` | Enables Redirect to another entryPoint to this frontend (e.g. HTTPS) |
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| `traefik.frontend.redirect.regex=^http://localhost/(.*)` | Redirects to another URL to this frontend.<br>Must be set with `traefik.frontend.redirect.replacement`. |
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| `traefik.frontend.redirect.replacement=http://mydomain/$1` | Redirects to another URL to this frontend.<br>Must be set with `traefik.frontend.redirect.regex`. |
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| `traefik.frontend.redirect.permanent=true` | Returns 301 instead of 302. |
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| `traefik.frontend.rule=EXPR` | Overrides the default frontend rule. Default: `Host:{containerName}.{domain}` or `Host:{service}.{project_name}.{domain}` if you are using `docker-compose`. |
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| `traefik.frontend.whiteList.sourceRange=RANGE` | Sets a list of IP-Ranges which are allowed to access.<br>An unset or empty list allows all Source-IPs to access.<br>If one of the Net-Specifications are invalid, the whole list is invalid and allows all Source-IPs to access. |
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| `traefik.frontend.whiteList.useXForwardedFor=true` | Uses `X-Forwarded-For` header as valid source of IP for the white list. |
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#### Custom Headers
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| Label | Description |
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|-------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| `traefik.frontend.headers.customRequestHeaders=EXPR ` | Provides the container with custom request headers that will be appended to each request forwarded to the container.<br>Format: <code>HEADER:value||HEADER2:value2</code> |
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| `traefik.frontend.headers.customResponseHeaders=EXPR` | Appends the headers to each response returned by the container, before forwarding the response to the client.<br>Format: <code>HEADER:value||HEADER2:value2</code> |
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#### Security Headers
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| Label | Description |
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|----------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| `traefik.frontend.headers.allowedHosts=EXPR` | Provides a list of allowed hosts that requests will be processed.<br>Format: `Host1,Host2` |
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| `traefik.frontend.headers.browserXSSFilter=true` | Adds the X-XSS-Protection header with the value `1; mode=block`. |
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| `traefik.frontend.headers.contentSecurityPolicy=VALUE` | Adds CSP Header with the custom value. |
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| `traefik.frontend.headers.contentTypeNosniff=true` | Adds the `X-Content-Type-Options` header with the value `nosniff`. |
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| `traefik.frontend.headers.customBrowserXSSValue=VALUE` | Set custom value for X-XSS-Protection header. This overrides the BrowserXssFilter option. |
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| `traefik.frontend.headers.customFrameOptionsValue=VALUE` | Overrides the `X-Frame-Options` header with the custom value. |
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| `traefik.frontend.headers.forceSTSHeader=false` | Adds the STS header to non-SSL requests. |
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| `traefik.frontend.headers.frameDeny=false` | Adds the `X-Frame-Options` header with the value of `DENY`. |
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| `traefik.frontend.headers.hostsProxyHeaders=EXPR ` | Provides a list of headers that the proxied hostname may be stored.<br>Format: `HEADER1,HEADER2` |
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| `traefik.frontend.headers.isDevelopment=false` | This will cause the `AllowedHosts`, `SSLRedirect`, and `STSSeconds`/`STSIncludeSubdomains` options to be ignored during development.<br>When deploying to production, be sure to set this to false. |
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| `traefik.frontend.headers.publicKey=VALUE` | Adds pinned HTST public key header. |
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| `traefik.frontend.headers.referrerPolicy=VALUE` | Adds referrer policy header. |
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| `traefik.frontend.headers.SSLRedirect=true` | Forces the frontend to redirect to SSL if a non-SSL request is sent. |
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| `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. |
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| `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. |
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| `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. |
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| `traefik.frontend.headers.SSLProxyHeaders=EXPR` | Header combinations that would signify a proper SSL Request (Such as `X-Forwarded-For:https`).<br>Format: <code>HEADER:value||HEADER2:value2</code> |
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| `traefik.frontend.headers.STSSeconds=315360000` | Sets the max-age of the STS header. |
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| `traefik.frontend.headers.STSIncludeSubdomains=true` | Adds the `IncludeSubdomains` section of the STS header. |
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| `traefik.frontend.headers.STSPreload=true` | Adds the preload flag to the STS header. |
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### On containers with Multiple Ports (segment labels)
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Segment labels are used to define routes to a container exposing multiple ports.
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A segment is a group of labels that apply to a port exposed by a container.
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You can define as many segments as ports exposed in a container.
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Segment labels override the default behavior.
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| Label | Description |
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|---------------------------------------------------------------------------|---------------------------------------------------------------|
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| `traefik.<segment_name>.backend=BACKEND` | Same as `traefik.backend` |
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| `traefik.<segment_name>.domain=DOMAIN` | Same as `traefik.domain` |
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| `traefik.<segment_name>.port=PORT` | Same as `traefik.port` |
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| `traefik.<segment_name>.protocol=http` | Same as `traefik.protocol` |
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| `traefik.<segment_name>.weight=10` | Same as `traefik.weight` |
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| `traefik.<segment_name>.frontend.auth.basic=EXPR` | Same as `traefik.frontend.auth.basic` |
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| `traefik.<segment_name>.frontend.auth.basic.removeHeader=true` | Same as `traefik.frontend.auth.basic.removeHeader` |
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| `traefik.<segment_name>.frontend.auth.basic.users=EXPR` | Same as `traefik.frontend.auth.basic.users` |
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| `traefik.<segment_name>.frontend.auth.basic.usersfile=/path/.htpasswd` | Same as `traefik.frontend.auth.basic.usersfile` |
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| `traefik.<segment_name>.frontend.auth.digest.removeHeader=true` | Same as `traefik.frontend.auth.digest.removeHeader` |
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| `traefik.<segment_name>.frontend.auth.digest.users=EXPR` | Same as `traefik.frontend.auth.digest.users` |
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| `traefik.<segment_name>.frontend.auth.digest.usersfile=/path/.htdigest` | Same as `traefik.frontend.auth.digest.usersfile` |
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| `traefik.<segment_name>.frontend.auth.forward.address=https://example.com`| Same as `traefik.frontend.auth.forward.address` |
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| `traefik.<segment_name>.frontend.auth.forward.tls.ca=/path/ca.pem` | Same as `traefik.frontend.auth.forward.tls.ca` |
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| `traefik.<segment_name>.frontend.auth.forward.tls.caOptional=true` | Same as `traefik.frontend.auth.forward.tls.caOptional` |
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| `traefik.<segment_name>.frontend.auth.forward.tls.cert=/path/server.pem` | Same as `traefik.frontend.auth.forward.tls.cert` |
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| `traefik.<segment_name>.frontend.auth.forward.tls.insecureSkipVerify=true`| Same as `traefik.frontend.auth.forward.tls.insecureSkipVerify`|
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| `traefik.<segment_name>.frontend.auth.forward.tls.key=/path/server.key` | Same as `traefik.frontend.auth.forward.tls.key` |
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| `traefik.<segment_name>.frontend.auth.forward.trustForwardHeader=true` | Same as `traefik.frontend.auth.forward.trustForwardHeader` |
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| `traefik.<segment_name>.frontend.auth.headerField=X-WebAuth-User` | Same as `traefik.frontend.auth.headerField` |
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| `traefik.<segment_name>.frontend.entryPoints=https` | Same as `traefik.frontend.entryPoints` |
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| `traefik.<segment_name>.frontend.errors.<name>.backend=NAME` | Same as `traefik.frontend.errors.<name>.backend` |
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| `traefik.<segment_name>.frontend.errors.<name>.query=PATH` | Same as `traefik.frontend.errors.<name>.query` |
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| `traefik.<segment_name>.frontend.errors.<name>.status=RANGE` | Same as `traefik.frontend.errors.<name>.status` |
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| `traefik.<segment_name>.frontend.passHostHeader=true` | Same as `traefik.frontend.passHostHeader` |
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| `traefik.<segment_name>.frontend.passTLSCert=true` | Same as `traefik.frontend.passTLSCert` |
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| `traefik.<segment_name>.frontend.priority=10` | Same as `traefik.frontend.priority` |
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| `traefik.<segment_name>.frontend.rateLimit.extractorFunc=EXP` | Same as `traefik.frontend.rateLimit.extractorFunc` |
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| `traefik.<segment_name>.frontend.rateLimit.rateSet.<name>.period=6` | Same as `traefik.frontend.rateLimit.rateSet.<name>.period` |
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| `traefik.<segment_name>.frontend.rateLimit.rateSet.<name>.average=6` | Same as `traefik.frontend.rateLimit.rateSet.<name>.average` |
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| `traefik.<segment_name>.frontend.rateLimit.rateSet.<name>.burst=6` | Same as `traefik.frontend.rateLimit.rateSet.<name>.burst` |
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| `traefik.<segment_name>.frontend.redirect.entryPoint=https` | Same as `traefik.frontend.redirect.entryPoint` |
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| `traefik.<segment_name>.frontend.redirect.regex=^http://localhost/(.*)` | Same as `traefik.frontend.redirect.regex` |
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| `traefik.<segment_name>.frontend.redirect.replacement=http://mydomain/$1` | Same as `traefik.frontend.redirect.replacement` |
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| `traefik.<segment_name>.frontend.redirect.permanent=true` | Same as `traefik.frontend.redirect.permanent` |
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| `traefik.<segment_name>.frontend.rule=EXP` | Same as `traefik.frontend.rule` |
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| `traefik.<segment_name>.frontend.whiteList.sourceRange=RANGE` | Same as `traefik.frontend.whiteList.sourceRange` |
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| `traefik.<segment_name>.frontend.whiteList.useXForwardedFor=true` | Same as `traefik.frontend.whiteList.useXForwardedFor` |
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#### Custom Headers
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| Label | Description |
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|----------------------------------------------------------------------|------------------------------------------------------------|
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| `traefik.<segment_name>.frontend.headers.customRequestHeaders=EXPR ` | overrides `traefik.frontend.headers.customRequestHeaders` |
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| `traefik.<segment_name>.frontend.headers.customResponseHeaders=EXPR` | overrides `traefik.frontend.headers.customResponseHeaders` |
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#### Security Headers
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| Label | Description |
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|-------------------------------------------------------------------------|--------------------------------------------------------------|
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| `traefik.<segment_name>.frontend.headers.allowedHosts=EXPR` | overrides `traefik.frontend.headers.allowedHosts` |
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| `traefik.<segment_name>.frontend.headers.browserXSSFilter=true` | overrides `traefik.frontend.headers.browserXSSFilter` |
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| `traefik.<segment_name>.frontend.headers.contentSecurityPolicy=VALUE` | overrides `traefik.frontend.headers.contentSecurityPolicy` |
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| `traefik.<segment_name>.frontend.headers.contentTypeNosniff=true` | overrides `traefik.frontend.headers.contentTypeNosniff` |
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| `traefik.<segment_name>.frontend.headers.customBrowserXSSValue=VALUE` | overrides `traefik.frontend.headers.customBrowserXSSValue` |
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| `traefik.<segment_name>.frontend.headers.customFrameOptionsValue=VALUE` | overrides `traefik.frontend.headers.customFrameOptionsValue` |
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| `traefik.<segment_name>.frontend.headers.forceSTSHeader=false` | overrides `traefik.frontend.headers.forceSTSHeader` |
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| `traefik.<segment_name>.frontend.headers.frameDeny=false` | overrides `traefik.frontend.headers.frameDeny` |
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| `traefik.<segment_name>.frontend.headers.hostsProxyHeaders=EXPR` | overrides `traefik.frontend.headers.hostsProxyHeaders` |
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| `traefik.<segment_name>.frontend.headers.isDevelopment=false` | overrides `traefik.frontend.headers.isDevelopment` |
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| `traefik.<segment_name>.frontend.headers.publicKey=VALUE` | overrides `traefik.frontend.headers.publicKey` |
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| `traefik.<segment_name>.frontend.headers.referrerPolicy=VALUE` | overrides `traefik.frontend.headers.referrerPolicy` |
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| `traefik.<segment_name>.frontend.headers.SSLRedirect=true` | overrides `traefik.frontend.headers.SSLRedirect` |
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| `traefik.<segment_name>.frontend.headers.SSLTemporaryRedirect=true` | overrides `traefik.frontend.headers.SSLTemporaryRedirect` |
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| `traefik.<segment_name>.frontend.headers.SSLHost=HOST` | overrides `traefik.frontend.headers.SSLHost` |
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| `traefik.<segment_name>.frontend.headers.SSLForceHost=true` | overrides `traefik.frontend.headers.SSLForceHost` |
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| `traefik.<segment_name>.frontend.headers.SSLProxyHeaders=EXPR` | overrides `traefik.frontend.headers.SSLProxyHeaders` |
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| `traefik.<segment_name>.frontend.headers.STSSeconds=315360000` | overrides `traefik.frontend.headers.STSSeconds` |
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| `traefik.<segment_name>.frontend.headers.STSIncludeSubdomains=true` | overrides `traefik.frontend.headers.STSIncludeSubdomains` |
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| `traefik.<segment_name>.frontend.headers.STSPreload=true` | overrides `traefik.frontend.headers.STSPreload` |
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