536 lines
17 KiB
Markdown
536 lines
17 KiB
Markdown
---
|
|
title: "Routing & Load Balancing Providers: Rancher"
|
|
description: "Traefik Proxy creates a corresponding service and router for each Rancher Service. Read the full documentation to learn more."
|
|
---
|
|
|
|
# Traefik & Rancher
|
|
|
|
A Story of Labels, Services & Containers
|
|
{: .subtitle }
|
|
|
|
|
|
|
|
Attach labels to your services and let Traefik do the rest!
|
|
|
|
One of the best feature of Traefik is to delegate the routing configuration to the application level.
|
|
With Rancher, Traefik can leverage labels attached to a service 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).
|
|
|
|
!!! important "This provider is specific to Rancher 1.x."
|
|
|
|
Rancher 2.x requires Kubernetes and does not have a metadata endpoint of its own for Traefik to query.
|
|
As such, Rancher 2.x users should utilize the [Kubernetes provider](./kubernetes-crd.md) directly.
|
|
|
|
## Routing Configuration
|
|
|
|
!!! info "Labels"
|
|
|
|
- Labels are case insensitive.
|
|
- The complete list of labels can be found in [the reference page](../../reference/dynamic-configuration/rancher.md).
|
|
|
|
### General
|
|
|
|
Traefik creates, for each rancher service, a corresponding [service](../services/index.md) and [router](../routers/index.md).
|
|
|
|
The Service automatically gets a server per container in this rancher service, and the router gets a default rule attached to it, based on the service name.
|
|
|
|
#### Service definition
|
|
|
|
--8<-- "content/routing/providers/service-by-label.md"
|
|
|
|
??? example "Automatic service assignment with labels"
|
|
|
|
With labels in a compose file
|
|
|
|
```yaml
|
|
labels:
|
|
- "traefik.http.routers.myproxy.rule=Host(`example.net`)"
|
|
# service myservice gets automatically assigned to router myproxy
|
|
- "traefik.http.services.myservice.loadbalancer.server.port=80"
|
|
```
|
|
|
|
??? example "Automatic service creation and assignment with labels"
|
|
|
|
With labels in a compose file
|
|
|
|
```yaml
|
|
labels:
|
|
# no service specified or defined and yet one gets automatically created
|
|
# and assigned to router myproxy.
|
|
- "traefik.http.routers.myproxy.rule=Host(`example.net`)"
|
|
```
|
|
|
|
### Routers
|
|
|
|
To update the configuration of the Router automatically attached to the container, 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-container.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=ep1,ep2"
|
|
```
|
|
|
|
??? 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 container,
|
|
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 container 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=10s"
|
|
```
|
|
|
|
??? 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.
|
|
|
|
```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`](../../middlewares/http/redirectscheme.md) named `my-redirect`, you'd write `traefik.http.middlewares.my-redirect.redirectscheme.scheme: https`.
|
|
|
|
More information about available middlewares in the dedicated [middlewares section](../../middlewares/overview.md).
|
|
|
|
!!! warning "The character `@` is not authorized in the middleware name."
|
|
|
|
??? example "Declaring and Referencing a Middleware"
|
|
|
|
```yaml
|
|
# ...
|
|
labels:
|
|
# Declaring a middleware
|
|
- traefik.http.middlewares.my-redirect.redirectscheme.scheme=https
|
|
# Referencing a middleware
|
|
- traefik.http.routers.my-container.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
|
|
services:
|
|
my-container:
|
|
# ...
|
|
labels:
|
|
- "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 container (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 labels.
|
|
|
|
??? example "Declaring UDP Routers and Services"
|
|
|
|
```yaml
|
|
services:
|
|
my-container:
|
|
# ...
|
|
labels:
|
|
- "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 container (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`
|
|
|
|
```yaml
|
|
- "traefik.enable=true"
|
|
```
|
|
|
|
You can tell Traefik to consider (or not) the container by setting `traefik.enable` to true or false.
|
|
|
|
This option overrides the value of `exposedByDefault`.
|
|
|
|
#### Port Lookup
|
|
|
|
Traefik is capable of detecting the port to use, by following the default rancher flow.
|
|
That means, if you just expose lets say port `:1337` on the rancher ui, traefik will pick up this port and use it.
|