# 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 - [x] Docker - [ ] DynamoDB - [ ] ECS - [ ] Etcd - [ ] Eureka - [x] File - [x] Kubernetes Ingress (without annotations) - [x] Kubernetes IngressRoute - [x] Marathon - [ ] Mesos - [x] Rest - [ ] Zookeeper