Improve doc on sensitive data stored into labels/tags

2024-07-11 14:40:07 +02:00

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title	description
Traefik ECS Documentation	AWS ECS is a provider for routing and load balancing in Traefik Proxy. Read the technical documentation to get started.

Traefik & ECS

A Story of Labels & Elastic Containers {: .subtitle }

Attach labels to your containers and let Traefik do the rest!

One of the best feature of Traefik is to delegate the routing configuration to the application level. With ECS, Traefik can leverage labels attached to a container to generate routing rules.

!!! warning "Labels & sensitive data"

We recommend to *not* use labels to store sensitive data (certificates, credentials, etc).
Instead, we recommend to store sensitive data in a safer storage (secrets, file, etc).

Routing Configuration

!!! info "labels"

- labels are case insensitive.
- The complete list of labels can be found in [the reference page](../../reference/dynamic-configuration/ecs.md).

General

Traefik creates, for each elastic service, a corresponding service and router.

The Service automatically gets a server per elastic container, and the router gets a default rule attached to it, based on the service name.

Routers

To update the configuration of the Router automatically attached to the service, add labels starting with traefik.routers.{name-of-your-choice}. and followed by the option you want to change.

For example, to change the rule, you could add the label traefik.http.routers.my-service.rule=Host(`example.com`).

!!! warning "The character @ is not authorized in the router name <router_name>."

??? info "traefik.http.routers.<router_name>.rule"

See [rule](../routers/index.md#rule) for more information.

```yaml
traefik.http.routers.myrouter.rule=Host(`example.com`)
```

??? info "traefik.http.routers.<router_name>.entrypoints"

See [entry points](../routers/index.md#entrypoints) for more information.

```yaml
traefik.http.routers.myrouter.entrypoints=web,websecure
```

??? info "traefik.http.routers.<router_name>.middlewares"

See [middlewares](../routers/index.md#middlewares) and [middlewares overview](../../middlewares/overview.md) for more information.

```yaml
traefik.http.routers.myrouter.middlewares=auth,prefix,cb
```

??? info "traefik.http.routers.<router_name>.service"

See [rule](../routers/index.md#service) for more information.

```yaml
traefik.http.routers.myrouter.service=myservice
```

??? info "traefik.http.routers.<router_name>.tls"

See [tls](../routers/index.md#tls) for more information.

```yaml
traefik.http.routers.myrouter>.tls=true
```

??? info "traefik.http.routers.<router_name>.tls.certresolver"

See [certResolver](../routers/index.md#certresolver) for more information.

```yaml
traefik.http.routers.myrouter.tls.certresolver=myresolver
```

??? info "traefik.http.routers.<router_name>.tls.domains[n].main"

See [domains](../routers/index.md#domains) for more information.

```yaml
traefik.http.routers.myrouter.tls.domains[0].main=example.org
```

??? info "traefik.http.routers.<router_name>.tls.domains[n].sans"

See [domains](../routers/index.md#domains) for more information.

```yaml
traefik.http.routers.myrouter.tls.domains[0].sans=test.example.org,dev.example.org
```

??? info "traefik.http.routers.<router_name>.tls.options"

See [options](../routers/index.md#options) for more information.

```yaml
traefik.http.routers.myrouter.tls.options=foobar
```

??? info "traefik.http.routers.<router_name>.priority"

See [priority](../routers/index.md#priority) for more information.

```yaml
traefik.http.routers.myrouter.priority=42
```

Services

To update the configuration of the Service automatically attached to the service, add labels starting with traefik.http.services.{name-of-your-choice}., followed by the option you want to change.

For example, to change the passHostHeader behavior, you'd add the label traefik.http.services.{name-of-your-choice}.loadbalancer.passhostheader=false.

!!! warning "The character @ is not authorized in the service name <service_name>."

??? info "traefik.http.services.<service_name>.loadbalancer.server.port"

Registers a port.
Useful when the service exposes multiples ports.

```yaml
traefik.http.services.myservice.loadbalancer.server.port=8080
```

??? info "traefik.http.services.<service_name>.loadbalancer.server.scheme"

Overrides the default scheme.

```yaml
traefik.http.services.myservice.loadbalancer.server.scheme=http
```

??? info "traefik.http.services.<service_name>.loadbalancer.serverstransport"

Allows to reference a ServersTransport resource that is defined either with the File provider or the Kubernetes CRD one.
See [serverstransport](../services/index.md#serverstransport) for more information.

```yaml
traefik.http.services.<service_name>.loadbalancer.serverstransport=foobar@file
```

??? info "traefik.http.services.<service_name>.loadbalancer.passhostheader"

See [pass Host header](../services/index.md#pass-host-header) for more information.

```yaml
traefik.http.services.myservice.loadbalancer.passhostheader=true
```

??? info "traefik.http.services.<service_name>.loadbalancer.healthcheck.headers.<header_name>"

See [health check](../services/index.md#health-check) for more information.

```yaml
traefik.http.services.myservice.loadbalancer.healthcheck.headers.X-Foo=foobar
```

??? info "traefik.http.services.<service_name>.loadbalancer.healthcheck.hostname"

See [health check](../services/index.md#health-check) for more information.

```yaml
traefik.http.services.myservice.loadbalancer.healthcheck.hostname=example.org
```

??? info "traefik.http.services.<service_name>.loadbalancer.healthcheck.interval"

See [health check](../services/index.md#health-check) for more information.

```yaml
traefik.http.services.myservice.loadbalancer.healthcheck.interval=10
```

??? info "traefik.http.services.<service_name>.loadbalancer.healthcheck.path"

See [health check](../services/index.md#health-check) for more information.

```yaml
traefik.http.services.myservice.loadbalancer.healthcheck.path=/foo
```

??? info "traefik.http.services.<service_name>.loadbalancer.healthcheck.method"

See [health check](../services/index.md#health-check) for more information.

```yaml
traefik.http.services.myservice.loadbalancer.healthcheck.method=foobar
```

??? info "traefik.http.services.<service_name>.loadbalancer.healthcheck.port"

See [health check](../services/index.md#health-check) for more information.

```yaml
traefik.http.services.myservice.loadbalancer.healthcheck.port=42
```

??? info "traefik.http.services.<service_name>.loadbalancer.healthcheck.scheme"

See [health check](../services/index.md#health-check) for more information.

```yaml
traefik.http.services.myservice.loadbalancer.healthcheck.scheme=http
```

??? info "traefik.http.services.<service_name>.loadbalancer.healthcheck.timeout"

See [health check](../services/index.md#health-check) for more information.

```yaml
traefik.http.services.myservice.loadbalancer.healthcheck.timeout=10
```

??? info "traefik.http.services.<service_name>.loadbalancer.healthcheck.followredirects"

See [health check](../services/index.md#health-check) for more information.

```yaml
traefik.http.services.myservice.loadbalancer.healthcheck.followredirects=true
```

??? info "traefik.http.services.<service_name>.loadbalancer.sticky.cookie"

See [sticky sessions](../services/index.md#sticky-sessions) for more information.

```yaml
traefik.http.services.myservice.loadbalancer.sticky.cookie=true
```

??? info "traefik.http.services.<service_name>.loadbalancer.sticky.cookie.httponly"

See [sticky sessions](../services/index.md#sticky-sessions) for more information.

```yaml
traefik.http.services.myservice.loadbalancer.sticky.cookie.httponly=true
```

??? info "traefik.http.services.<service_name>.loadbalancer.sticky.cookie.name"

See [sticky sessions](../services/index.md#sticky-sessions) for more information.

```yaml
traefik.http.services.myservice.loadbalancer.sticky.cookie.name=foobar
```

??? info "traefik.http.services.<service_name>.loadbalancer.sticky.cookie.secure"

See [sticky sessions](../services/index.md#sticky-sessions) for more information.

```yaml
traefik.http.services.myservice.loadbalancer.sticky.cookie.secure=true
```

??? info "traefik.http.services.<service_name>.loadbalancer.sticky.cookie.samesite"

See [sticky sessions](../services/index.md#sticky-sessions) for more information.

```yaml
traefik.http.services.myservice.loadbalancer.sticky.cookie.samesite=none
```

??? info "traefik.http.services.<service_name>.loadbalancer.responseforwarding.flushinterval"

See [response forwarding](../services/index.md#response-forwarding) for more information.
    
FlushInterval specifies the flush interval to flush to the client while copying the response body.

```yaml
traefik.http.services.myservice.loadbalancer.responseforwarding.flushinterval=10
```

Middleware

You can declare pieces of middleware using labels starting with traefik.http.middlewares.{name-of-your-choice}., followed by the middleware type/options.

For example, to declare a middleware redirectscheme named my-redirect, you'd write traefik.http.middlewares.my-redirect.redirectscheme.scheme: https.

More information about available middlewares in the dedicated middlewares section.

!!! warning "The character @ is not authorized in the middleware name."

??? example "Declaring and Referencing a Middleware"

```yaml
# ...
# Declaring a middleware
traefik.http.middlewares.my-redirect.redirectscheme.scheme=https
# Referencing a middleware
traefik.http.routers.my-service.middlewares=my-redirect
```

!!! warning "Conflicts in Declaration"

If you declare multiple middleware with the same name but with different parameters, the middleware fails to be declared.

TCP

You can declare TCP Routers and/or Services using labels.

??? example "Declaring TCP Routers and Services"

```yaml
traefik.tcp.routers.my-router.rule=HostSNI(`example.com`)
traefik.tcp.routers.my-router.tls=true
traefik.tcp.services.my-service.loadbalancer.server.port=4123
```

!!! warning "TCP and HTTP"

If you declare a TCP Router/Service, it will prevent Traefik from automatically creating an HTTP Router/Service (like it does by default if no TCP Router/Service is defined).
You can declare both a TCP Router/Service and an HTTP Router/Service for the same elastic service (but you have to do so manually).

TCP Routers

??? info "traefik.tcp.routers.<router_name>.entrypoints"

See [entry points](../routers/index.md#entrypoints_1) for more information.

```yaml
traefik.tcp.routers.mytcprouter.entrypoints=ep1,ep2
```

??? info "traefik.tcp.routers.<router_name>.rule"

See [rule](../routers/index.md#rule_1) for more information.

```yaml
traefik.tcp.routers.mytcprouter.rule=HostSNI(`example.com`)
```

??? info "traefik.tcp.routers.<router_name>.service"

See [service](../routers/index.md#services) for more information.

```yaml
traefik.tcp.routers.mytcprouter.service=myservice
```

??? info "traefik.tcp.routers.<router_name>.tls"

See [TLS](../routers/index.md#tls_1) for more information.

```yaml
traefik.tcp.routers.mytcprouter.tls=true
```

??? info "traefik.tcp.routers.<router_name>.tls.certresolver"

See [certResolver](../routers/index.md#certresolver_1) for more information.

```yaml
traefik.tcp.routers.mytcprouter.tls.certresolver=myresolver
```

??? info "traefik.tcp.routers.<router_name>.tls.domains[n].main"

See [domains](../routers/index.md#domains_1) for more information.

```yaml
traefik.tcp.routers.mytcprouter.tls.domains[0].main=example.org
```

??? info "traefik.tcp.routers.<router_name>.tls.domains[n].sans"

See [domains](../routers/index.md#domains_1) for more information.

```yaml
traefik.tcp.routers.mytcprouter.tls.domains[0].sans=test.example.org,dev.example.org
```

??? info "traefik.tcp.routers.<router_name>.tls.options"

See [options](../routers/index.md#options_1) for more information.

```yaml
traefik.tcp.routers.mytcprouter.tls.options=mysoptions
```

??? info "traefik.tcp.routers.<router_name>.tls.passthrough"

See [TLS](../routers/index.md#tls_1) for more information.

```yaml
traefik.tcp.routers.mytcprouter.tls.passthrough=true
```

??? info "traefik.tcp.routers.<router_name>.priority"

See [priority](../routers/index.md#priority_1) for more information.

```yaml
traefik.tcp.routers.myrouter.priority=42
```

TCP Services

??? info "traefik.tcp.services.<service_name>.loadbalancer.server.port"

Registers a port of the application.

```yaml
traefik.tcp.services.mytcpservice.loadbalancer.server.port=423
```

??? info "traefik.tcp.services.<service_name>.loadbalancer.terminationdelay"

See [termination delay](../services/index.md#termination-delay) for more information.

```yaml
traefik.tcp.services.mytcpservice.loadbalancer.terminationdelay=100
```

??? info "traefik.tcp.services.<service_name>.loadbalancer.proxyprotocol.version"

See [PROXY protocol](../services/index.md#proxy-protocol) for more information.

```yaml
traefik.tcp.services.mytcpservice.loadbalancer.proxyprotocol.version=1
```

UDP

You can declare UDP Routers and/or Services using tags.

??? example "Declaring UDP Routers and Services"

```yaml
traefik.udp.routers.my-router.entrypoints=udp
traefik.udp.services.my-service.loadbalancer.server.port=4123
```

!!! warning "UDP and HTTP"

If you declare a UDP Router/Service, it will prevent Traefik from automatically creating an HTTP Router/Service (like it does by default if no UDP Router/Service is defined).
You can declare both a UDP Router/Service and an HTTP Router/Service for the same elastic service (but you have to do so manually).

UDP Routers

??? info "traefik.udp.routers.<router_name>.entrypoints"

See [entry points](../routers/index.md#entrypoints_2) for more information.

```yaml
traefik.udp.routers.myudprouter.entrypoints=ep1,ep2
```

??? info "traefik.udp.routers.<router_name>.service"

See [service](../routers/index.md#services_1) for more information.

```yaml
traefik.udp.routers.myudprouter.service=myservice
```

UDP Services

??? info "traefik.udp.services.<service_name>.loadbalancer.server.port"

Registers a port of the application.

```yaml
traefik.udp.services.myudpservice.loadbalancer.server.port=423
```

Specific Provider Options

`traefik.enable`

traefik.enable=true

You can tell Traefik to consider (or not) the ECS service by setting traefik.enable to true or false.

This option overrides the value of exposedByDefault.

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