ECS Backend

Træfik can be configured to use Amazon ECS as a backend configuration.

Configuration

################################################################
# ECS configuration backend
################################################################

# Enable ECS configuration backend.
[ecs]

# ECS Cluster Name.
#
# DEPRECATED - Please use `clusters`.
#
cluster = "default"

# ECS Clusters Name.
#
# Optional
# Default: ["default"]
#
clusters = ["default"]

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

# Default domain used.
#
# Optional
# Default: ""
#
domain = "ecs.localhost"

# Enable auto discover ECS clusters.
#
# Optional
# Default: false
#
autoDiscoverClusters = false

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

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

# Region to use when connecting to AWS.
#
# Optional
#
region = "us-east-1"

# AccessKeyID to use when connecting to AWS.
#
# Optional
#
accessKeyID = "abc"

# SecretAccessKey to use when connecting to AWS.
#
# Optional
#
secretAccessKey = "123"

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

If AccessKeyID/SecretAccessKey is not given credentials will be resolved in the following order:

From environment variables; AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, and AWS_SESSION_TOKEN.
Shared credentials, determined by AWS_PROFILE and AWS_SHARED_CREDENTIALS_FILE, defaults to default and ~/.aws/credentials.
EC2 instance role or ECS task role

Policy

Træfik needs the following policy to read ECS information:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "TraefikECSReadAccess",
            "Effect": "Allow",
            "Action": [
                "ecs:ListClusters",
                "ecs:DescribeClusters",
                "ecs:ListTasks",
                "ecs:DescribeTasks",
                "ecs:DescribeContainerInstances",
                "ecs:DescribeTaskDefinition",
                "ec2:DescribeInstances"
            ],
            "Resource": [
                "*"
            ]
        }
    ]
}

Labels: overriding default behaviour

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

Label	Description
`traefik.enable=false`	Disable this container in Træfik
`traefik.port=80`	Override the default `port` value. Overrides `NetworkBindings` from Docker Container
`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:{instance_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.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.

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