traefik/docs/content/migration/v1-to-v2.md
Jean-Baptiste Doumenjou 0d9cf697fa Base of the migration guide
Co-authored-by: Mathieu Lonjaret <mathieu.lonjaret@gmail.com>
2019-08-31 00:28:04 -07:00

9.5 KiB

Migration Guide: From v1 to v2

How to Migrate from Traefik v1 to Traefik v2. {: .subtitle }

The version 2 of Traefik introduces a number of breaking changes, which require one to update their configuration when they migrate from v1 to v2. The goal of this page is to recapitulate all of these changes, and in particular to give examples, feature by feature, of how the configuration looked like in v1, and how it now looks like in v2.

Frontends and Backends Are Dead...
... Long Live Routers, Middlewares, and Services

During the transition from v1 to v2, a number of internal pieces and components of Traefik were rewritten and reorganized. As such, the combination of core notions such as frontends and backends has been replaced with the combination of routers, services, and middlewares.

Typically, a router replaces a frontend, and a service assumes the role of a backend, with each router referring to a service. However, even though a backend was in charge of applying any desired modification on the fly to the incoming request, the router defers that responsibility to another component. Instead, a dedicated middleware is now defined for each kind of such modification. Then any router can refer to an instance of the wanted middleware.

!!! example "One frontend with basic auth and one backend, become one router, one service, and one basic auth middleware."

### v1

```yaml tab="Docker"
labels:
  - "traefik.frontend.rule=Host:test.localhost;PathPrefix:/test"
  - "traefik.frontend.auth.basic.users=test:$apr1$H6uskkkW$IgXLP6ewTrSuBkTrqE8wj/,test2:$apr1$d9hr9HBB$4HxwgUir3HP4EsggP/QNo0"
```

```yaml tab="K8s Ingress"
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: traefik
  namespace: kube-system
  annotations:
    kubernetes.io/ingress.class: traefik
    traefik.ingress.kubernetes.io/rule-type: PathPrefix
spec:
  rules:
  - host: test.locahost
    http:
      paths:
      - path: /test
        backend:
          serviceName: server0
          servicePort: 80
      - path: /test
        backend:
          serviceName: server1
          servicePort: 80
```

```toml tab="File (TOML)"
[frontends]
  [frontends.frontend1]
    entryPoints = ["http"]
    backend = "backend1"

    [frontends.frontend1.routes]
      [frontends.frontend1.routes.route0]
        rule = "Host:test.localhost"
      [frontends.frontend1.routes.route0]
        rule = "PathPrefix:/test"
    
    [frontends.frontend1.auth]
      [frontends.frontend1.auth.basic]
        users = [
          "test:$apr1$H6uskkkW$IgXLP6ewTrSuBkTrqE8wj/",
          "test2:$apr1$d9hr9HBB$4HxwgUir3HP4EsggP/QNo0",
        ]

[backends]
  [backends.backend1]
    [backends.backend1.servers.server0]
      url = "http://10.10.10.1:80"
    [backends.backend1.servers.server1]
      url = "http://10.10.10.2:80"

    [backends.backend1.loadBalancer]
      method = "wrr"
```

### v2

```yaml tab="Docker"
labels:
  - "traefik.http.routers.router0.rule=Host(`bar.com`) && PathPrefix(`/test`)"
  - "traefik.http.routers.router0.middlewares=auth"
  - "traefik.http.middlewares.auth.basicauth.users=test:$apr1$H6uskkkW$IgXLP6ewTrSuBkTrqE8wj/,test2:$apr1$d9hr9HBB$4HxwgUir3HP4EsggP/QNo0"
```

```yaml tab="K8s IngressRoute"
# The definitions below require the definitions for the Middleware and IngressRoute kinds.  
# https://docs.traefik.io/v2.0/providers/kubernetes-crd/#traefik-ingressroute-definition
apiVersion: traefik.containo.us/v1alpha1
kind: Middleware
metadata:
  name: basicauth
  namespace: foo

spec:
  basicAuth:
    users:
      - test:$apr1$H6uskkkW$IgXLP6ewTrSuBkTrqE8wj/
      - test2:$apr1$d9hr9HBB$4HxwgUir3HP4EsggP/QNo0

---
apiVersion: traefik.containo.us/v1alpha1
kind: IngressRoute
metadata:
  name: ingressroutebar

spec:
  entryPoints:
    - http
  routes:
  - match: Host(`test.localhost`) && PathPrefix(`/test`)
    kind: Rule
    services:
    - name: server0
      port: 80
    - name: server1
      port: 80
    middlewares:
    - name: basicauth
      namespace: foo
```

```toml tab="File (TOML)"
[http.routers]
  [http.routers.router0]
    rule = "Host(`test.localhost`) && PathPrefix(`/test`)"
    middlewares = ["auth"]
    service = "my-service"

[http.services]
  [[http.services.my-service.loadBalancer.servers]]
    url = "http://10.10.10.1:80"
  [[http.services.my-service.loadBalancer.servers]]
    url = "http://10.10.10.2:80"

[http.middlewares]
  [http.middlewares.auth.basicAuth]
    users = [
      "test:$apr1$H6uskkkW$IgXLP6ewTrSuBkTrqE8wj/", 
      "test2:$apr1$d9hr9HBB$4HxwgUir3HP4EsggP/QNo0",
    ]
```

```yaml tab="File (YAML)"
http:
  routers:
    router0:
      rule: "Host(`test.localhost`) && PathPrefix(`/test`)"
      service: my-service
      middlewares:
      - auth

  services:
    my-service:
      loadBalancer:
        servers:
        - url: http://10.10.10.1:80
        - url: http://10.10.10.2:80

  middlewares:
    auth:
      basicAuth:
        users:
        - "test:$apr1$H6uskkkW$IgXLP6ewTrSuBkTrqE8wj/"
        - "test2:$apr1$d9hr9HBB$4HxwgUir3HP4EsggP/QNo0"
```

TLS configuration is now dynamic, per router.

TLS parameters used to be specified in the static configuration, as an entryPoint field. With Traefik v2, a new dynamic TLS section at the root contains all the desired TLS configurations. Then, a router's TLS field can refer to one of the TLS configurations defined at the root, hence defining the TLS configuration for that router.

!!! example "TLS on web-secure entryPoint becomes TLS option on Router-1"

### v1

```toml tab="File (TOML)"
# static configuration
[entryPoints]
  [entryPoints.web-secure]
    address = ":443"

    [entryPoints.web-secure.tls]
      minVersion = "VersionTLS12"
      cipherSuites = [
        "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
        "TLS_RSA_WITH_AES_256_GCM_SHA384"
       ]
      [[entryPoints.web-secure.tls.certificates]]
        certFile = "path/to/my.cert"
        keyFile = "path/to/my.key"
```

```bash tab="CLI"
--entryPoints='Name:web-secure Address::443 TLS:path/to/my.cert,path/to/my.key TLS.MinVersion:VersionTLS12 TLS.CipherSuites:TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA384'
```

### v2

```toml tab="File (TOML)"
# dynamic configuration
[http.routers]
  [http.routers.Router-1]
    rule = "Host(`bar.com`)"
    service = "service-id"
    # will terminate the TLS request
    [http.routers.Router-1.tls]
      options = "myTLSOptions"

[[tls.certificates]]
  certFile = "/path/to/domain.cert"
  keyFile = "/path/to/domain.key"

[tls.options]
  [tls.options.default]
    minVersion = "VersionTLS12"

  [tls.options.myTLSOptions]
    minVersion = "VersionTLS13"
    cipherSuites = [
          "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
          "TLS_RSA_WITH_AES_256_GCM_SHA384"
        ]
```

```yaml tab="File (YAML)"
http:
  routers:
    Router-1:
      rule: "Host(`bar.com`)"
      service: service-id
      # will terminate the TLS request
      tls:
        options: myTLSOptions

tls:
  certificates:
    - certFile: /path/to/domain.cert
      keyFile: /path/to/domain.key
  options:
    myTLSOptions:
      minVersion: VersionTLS13
      cipherSuites:
      - TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
      - TLS_RSA_WITH_AES_256_GCM_SHA384
```

```yaml tab="K8s IngressRoute"
# The definitions below require the definitions for the TLSOption and IngressRoute kinds.  
# https://docs.traefik.io/v2.0/providers/kubernetes-crd/#traefik-ingressroute-definition
apiVersion: traefik.containo.us/v1alpha1
kind: TLSOption
metadata:
  name: mytlsoption
  namespace: default

spec:
  minVersion: VersionTLS13
  cipherSuites:
    - TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
    - TLS_RSA_WITH_AES_256_GCM_SHA384

---
apiVersion: traefik.containo.us/v1alpha1
kind: IngressRoute
metadata:
  name: ingressroutebar

spec:
  entryPoints:
    - web
  routes:
  - match: Host(`bar.com`)
    kind: Rule
    services:
    - name: whoami
      port: 80
  tls:
    options: 
      name: mytlsoption
      namespace: default
```

```yaml tab="Docker"
labels:
  # myTLSOptions must be defined by another provider, in this instance in the File Provider.
  # see the cross provider section
  - "traefik.http.routers.router0.tls.options=myTLSOptions@file"
```

HTTP -> HTTPS Redirection

TODO

ACME (let's encrypt)

TODO

Traefik Logs

TODO

Tracing

TODO

Metrics

TODO

No more root level key/values

TODO

Providers

Supported providers, for now:

  • Azure Service Fabric
  • BoltDB
  • Consul
  • Consul Catalog
  • Docker
  • DynamoDB
  • ECS
  • Etcd
  • Eureka
  • File
  • Kubernetes Ingress (without annotations)
  • Kubernetes IngressRoute
  • Marathon
  • Mesos
  • Rest
  • Zookeeper