doc(consulcatalog): add tags documentation
- add a dedicate page for Consul Catalog.
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Fernandez Ludovic
Traefiker
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3 changed files with 145 additions and 97 deletions
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# Consul Backend
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## Consul Key-Value backend
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# Consul Key-Value Backend
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Træfik can be configured to use Consul as a backend configuration.
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@ -61,97 +59,3 @@ prefix = "traefik"
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To enable constraints see [backend-specific constraints section](/configuration/commons/#backend-specific).
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Please refer to the [Key Value storage structure](/user-guide/kv-config/#key-value-storage-structure) section to get documentation on Traefik KV structure.
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## Consul Catalog backend
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Træfik can be configured to use service discovery catalog of Consul as a backend configuration.
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```toml
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################################################################
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# Consul Catalog configuration backend
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################################################################
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# Enable Consul Catalog configuration backend.
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[consulCatalog]
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# Consul server endpoint.
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#
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# Required
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# Default: "127.0.0.1:8500"
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#
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endpoint = "127.0.0.1:8500"
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# Expose Consul catalog 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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# Default domain used.
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#
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# Optional
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#
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domain = "consul.localhost"
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# Prefix for Consul catalog tags.
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#
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# Optional
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# Default: "traefik"
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#
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prefix = "traefik"
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# Default frontEnd Rule for Consul services.
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#
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# The format is a Go Template with:
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# - ".ServiceName", ".Domain" and ".Attributes" available
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# - "getTag(name, tags, defaultValue)", "hasTag(name, tags)" and "getAttribute(name, tags, defaultValue)" functions are available
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# - "getAttribute(...)" function uses prefixed tag names based on "prefix" value
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#
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# Optional
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# Default: "Host:{{.ServiceName}}.{{.Domain}}"
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#
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#frontEndRule = "Host:{{.ServiceName}}.{{Domain}}"
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```
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This backend will create routes matching on hostname based on the service name used in Consul.
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To enable constraints see [backend-specific constraints section](/configuration/commons/#backend-specific).
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### Tags
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Additional settings can be defined using Consul Catalog tags.
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| Tag | Description |
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|-----------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| `traefik.enable=false` | Disable this container in Træfik |
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| `traefik.protocol=https` | Override the default `http` protocol |
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| `traefik.backend.weight=10` | Assign this weight to the container |
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| `traefik.backend.circuitbreaker=EXPR` | Create a [circuit breaker](/basics/#backends) to be used against the backend, ex: `NetworkErrorRatio() > 0.` |
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| `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. |
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| `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. |
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| `traefik.frontend.rule=Host:test.traefik.io` | Override the default frontend rule (Default: `Host:{{.ServiceName}}.{{.Domain}}`). |
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| `traefik.frontend.passHostHeader=true` | Forward client `Host` header to the backend. |
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| `traefik.frontend.priority=10` | Override default frontend priority |
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| `traefik.frontend.entryPoints=http,https` | Assign this frontend to entry points `http` and `https`. Overrides `defaultEntryPoints`. |
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| `traefik.frontend.auth.basic=EXPR` | Sets basic authentication for that frontend in CSV format: `User:Hash,User:Hash` |
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| `traefik.backend.loadbalancer=drr` | override the default `wrr` load balancer algorithm |
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| `traefik.backend.loadbalancer.stickiness=true` | enable backend sticky sessions |
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| `traefik.backend.loadbalancer.stickiness.cookieName=NAME` | Manually set the cookie name for sticky sessions |
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| `traefik.backend.loadbalancer.sticky=true` | enable backend sticky sessions (DEPRECATED) |
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### Examples
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If you want that Træfik uses Consul tags correctly you need to defined them like that:
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```json
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traefik.enable=true
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traefik.tags=api
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traefik.tags=external
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```
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If the prefix defined in Træfik configuration is `bla`, tags need to be defined like that:
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```json
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bla.enable=true
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bla.tags=api
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bla.tags=external
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```
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143
docs/configuration/backends/consulcatalog.md
Normal file
143
docs/configuration/backends/consulcatalog.md
Normal file
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@ -0,0 +1,143 @@
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# Consul Catalog backend
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Træfik can be configured to use service discovery catalog of Consul as a backend configuration.
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```toml
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################################################################
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# Consul Catalog configuration backend
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################################################################
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# Enable Consul Catalog configuration backend.
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[consulCatalog]
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# Consul server endpoint.
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#
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# Required
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# Default: "127.0.0.1:8500"
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#
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endpoint = "127.0.0.1:8500"
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# Expose Consul catalog 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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# Default domain used.
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#
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# Optional
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#
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domain = "consul.localhost"
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# Prefix for Consul catalog tags.
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#
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# Optional
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# Default: "traefik"
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#
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prefix = "traefik"
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# Default frontEnd Rule for Consul services.
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#
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# The format is a Go Template with:
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# - ".ServiceName", ".Domain" and ".Attributes" available
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# - "getTag(name, tags, defaultValue)", "hasTag(name, tags)" and "getAttribute(name, tags, defaultValue)" functions are available
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# - "getAttribute(...)" function uses prefixed tag names based on "prefix" value
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#
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# Optional
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# Default: "Host:{{.ServiceName}}.{{.Domain}}"
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#
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#frontEndRule = "Host:{{.ServiceName}}.{{.Domain}}"
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```
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This backend will create routes matching on hostname based on the service name used in Consul.
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To enable constraints see [backend-specific constraints section](/configuration/commons/#backend-specific).
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## Tags
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Additional settings can be defined using Consul Catalog tags.
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!!! note
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The default prefix is `traefik`.
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| Label | Description |
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|-------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| `<prefix>.enable=false` | Disable this container in Træfik. |
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| `<prefix>.port=80` | Register this port. Useful when the container exposes multiples ports. |
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| `<prefix>.protocol=https` | Override the default `http` protocol. |
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| `<prefix>.weight=10` | Assign this weight to the container. |
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| `<prefix>.backend.circuitbreaker.expression=EXPR` | Create a [circuit breaker](/basics/#backends) to be used against the backend. ex: `NetworkErrorRatio() > 0.` |
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| `<prefix>.backend.healthcheck.path=/health` | Enable health check for the backend, hitting the container at `path`. |
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| `<prefix>.backend.healthcheck.port=8080` | Allow to use a different port for the health check. |
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| `<prefix>.backend.healthcheck.interval=1s` | Define the health check interval. |
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| `<prefix>.backend.loadbalancer.method=drr` | Override the default `wrr` load balancer algorithm. |
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| `<prefix>.backend.loadbalancer.stickiness=true` | Enable backend sticky sessions. |
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| `<prefix>.backend.loadbalancer.stickiness.cookieName=NAME` | Manually set the cookie name for sticky sessions. |
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| `<prefix>.backend.loadbalancer.sticky=true` | Enable backend sticky sessions. (DEPRECATED) |
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| `<prefix>.backend.loadbalancer.swarm=true` | Use Swarm's inbuilt load balancer (only relevant under Swarm Mode). |
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| `<prefix>.backend.maxconn.amount=10` | Set 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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| `<prefix>.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.<br>Must be used in conjunction with the above label to take effect. |
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| `<prefix>.frontend.auth.basic=EXPR` | Sets basic authentication for that frontend in CSV format: `User:Hash,User:Hash` |
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| `<prefix>.frontend.entryPoints=http,https` | Assign this frontend to entry points `http` and `https`.<br>Overrides `defaultEntryPoints` |
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| `<prefix>.frontend.errors.<name>.backend=NAME` | See [custom error pages](/configuration/commons/#custom-error-pages) section. |
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| `<prefix>.frontend.errors.<name>.query=PATH` | See [custom error pages](/configuration/commons/#custom-error-pages) section. |
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| `<prefix>.frontend.errors.<name>.status=RANGE` | See [custom error pages](/configuration/commons/#custom-error-pages) section. |
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| `<prefix>.frontend.passHostHeader=true` | Forward client `Host` header to the backend. |
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| `<prefix>.frontend.passTLSCert=true` | Forward TLS Client certificates to the backend. |
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| `<prefix>.frontend.priority=10` | Override default frontend priority. |
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| `<prefix>.frontend.rateLimit.extractorFunc=EXP` | See [custom error pages](/configuration/commons/#rate-limiting) section. |
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| `<prefix>.frontend.rateLimit.rateSet.<name>.period=6` | See [custom error pages](/configuration/commons/#rate-limiting) section. |
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| `<prefix>.frontend.rateLimit.rateSet.<name>.average=6` | See [custom error pages](/configuration/commons/#rate-limiting) section. |
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| `<prefix>.frontend.rateLimit.rateSet.<name>.burst=6` | See [custom error pages](/configuration/commons/#rate-limiting) section. |
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| `<prefix>.frontend.redirect.entryPoint=https` | Enables Redirect to another entryPoint for that frontend (e.g. HTTPS) . |
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| `<prefix>.frontend.redirect.regex=^http://localhost/(.*)` | Redirect to another URL for that frontend.<br>Must be set with `traefik.frontend.redirect.replacement`. |
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| `<prefix>.frontend.redirect.replacement=http://mydomain/$1` | Redirect to another URL for that frontend.<br>Must be set with `traefik.frontend.redirect.regex`. |
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| `<prefix>.frontend.rule=EXPR` | Override the default frontend rule. Default: `Host:{{.ServiceName}}.{{.Domain}}`. |
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| `<prefix>.frontend.whitelistSourceRange=RANGE` | List of IP-Ranges which are allowed to access.<br>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. |
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### Security Headers
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!!! note
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The default prefix is `traefik`.
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| Label | Description |
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|-----------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| `<prefix>.frontend.headers.allowedHosts=EXPR` | Provides a list of allowed hosts that requests will be processed.<br>Format: `Host1,Host2` |
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| `<prefix>.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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| `<prefix>.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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| `<prefix>.frontend.headers.hostsProxyHeaders=EXPR ` | Provides a list of headers that the proxied hostname may be stored.<br>Format: `HEADER1,HEADER2` |
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| `<prefix>.frontend.headers.SSLRedirect=true` | Forces the frontend to redirect to SSL if a non-SSL request is sent. |
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| `<prefix>.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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| `<prefix>.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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| `<prefix>.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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| `<prefix>.frontend.headers.STSSeconds=315360000` | Sets the max-age of the STS header. |
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| `<prefix>.frontend.headers.STSIncludeSubdomains=true` | Adds the `IncludeSubdomains` section of the STS header. |
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| `<prefix>.frontend.headers.STSPreload=true` | Adds the preload flag to the STS header. |
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| `<prefix>.frontend.headers.forceSTSHeader=false` | Adds the STS header to non-SSL requests. |
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| `<prefix>.frontend.headers.frameDeny=false` | Adds the `X-Frame-Options` header with the value of `DENY`. |
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| `<prefix>.frontend.headers.customFrameOptionsValue=VALUE` | Overrides the `X-Frame-Options` header with the custom value. |
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| `<prefix>.frontend.headers.contentTypeNosniff=true` | Adds the `X-Content-Type-Options` header with the value `nosniff`. |
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| `<prefix>.frontend.headers.browserXSSFilter=true` | Adds the X-XSS-Protection header with the value `1; mode=block`. |
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| `<prefix>.frontend.headers.contentSecurityPolicy=VALUE` | Adds CSP Header with the custom value. |
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| `<prefix>.frontend.headers.publicKey=VALUE` | Adds pinned HTST public key header. |
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| `<prefix>.frontend.headers.referrerPolicy=VALUE` | Adds referrer policy header. |
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| `<prefix>.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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### Examples
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If you want that Træfik uses Consul tags correctly you need to defined them like that:
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```json
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traefik.enable=true
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traefik.tags=api
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traefik.tags=external
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```
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If the prefix defined in Træfik configuration is `bla`, tags need to be defined like that:
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```json
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bla.enable=true
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bla.tags=api
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bla.tags=external
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```
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@ -71,6 +71,7 @@ pages:
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- 'Backend: Web': 'configuration/backends/web.md'
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- 'Backend: BoltDB': 'configuration/backends/boltdb.md'
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- 'Backend: Consul': 'configuration/backends/consul.md'
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- 'Backend: Consul Catalog': 'configuration/backends/consulcatalog.md'
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- 'Backend: Docker': 'configuration/backends/docker.md'
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- 'Backend: DynamoDB': 'configuration/backends/dynamodb.md'
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- 'Backend: ECS': 'configuration/backends/ecs.md'
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