951 lines
23 KiB
Markdown
951 lines
23 KiB
Markdown
---
|
|
title: "Kubernetes Ingress Routing Configuration"
|
|
description: "Understand the routing configuration for the Kubernetes Ingress Controller and Traefik Proxy. Read the technical documentation."
|
|
---
|
|
|
|
# Traefik & Kubernetes
|
|
|
|
The Kubernetes Ingress Controller.
|
|
{: .subtitle }
|
|
|
|
## Routing Configuration
|
|
|
|
The provider then watches for incoming ingresses events, such as the example below,
|
|
and derives the corresponding dynamic configuration from it,
|
|
which in turn will create the resulting routers, services, handlers, etc.
|
|
|
|
## Configuration Example
|
|
|
|
??? example "Configuring Kubernetes Ingress Controller"
|
|
|
|
```yaml tab="RBAC"
|
|
---
|
|
apiVersion: rbac.authorization.k8s.io/v1
|
|
kind: ClusterRole
|
|
metadata:
|
|
name: traefik-ingress-controller
|
|
rules:
|
|
- apiGroups:
|
|
- ""
|
|
resources:
|
|
- services
|
|
- endpoints
|
|
- secrets
|
|
verbs:
|
|
- get
|
|
- list
|
|
- watch
|
|
- apiGroups:
|
|
- extensions
|
|
- networking.k8s.io
|
|
resources:
|
|
- ingresses
|
|
- ingressclasses
|
|
verbs:
|
|
- get
|
|
- list
|
|
- watch
|
|
- apiGroups:
|
|
- extensions
|
|
- networking.k8s.io
|
|
resources:
|
|
- ingresses/status
|
|
verbs:
|
|
- update
|
|
|
|
---
|
|
apiVersion: rbac.authorization.k8s.io/v1
|
|
kind: ClusterRoleBinding
|
|
metadata:
|
|
name: traefik-ingress-controller
|
|
roleRef:
|
|
apiGroup: rbac.authorization.k8s.io
|
|
kind: ClusterRole
|
|
name: traefik-ingress-controller
|
|
subjects:
|
|
- kind: ServiceAccount
|
|
name: traefik-ingress-controller
|
|
namespace: default
|
|
```
|
|
|
|
```yaml tab="Ingress"
|
|
apiVersion: networking.k8s.io/v1
|
|
kind: Ingress
|
|
metadata:
|
|
name: myingress
|
|
annotations:
|
|
traefik.ingress.kubernetes.io/router.entrypoints: web
|
|
|
|
spec:
|
|
rules:
|
|
- host: example.com
|
|
http:
|
|
paths:
|
|
- path: /bar
|
|
pathType: Exact
|
|
backend:
|
|
service:
|
|
name: whoami
|
|
port:
|
|
number: 80
|
|
- path: /foo
|
|
pathType: Exact
|
|
backend:
|
|
service:
|
|
name: whoami
|
|
port:
|
|
number: 80
|
|
```
|
|
|
|
```yaml tab="Ingress v1beta1 (deprecated)"
|
|
apiVersion: networking.k8s.io/v1beta1
|
|
kind: Ingress
|
|
metadata:
|
|
name: myingress
|
|
annotations:
|
|
traefik.ingress.kubernetes.io/router.entrypoints: web
|
|
|
|
spec:
|
|
rules:
|
|
- host: example.com
|
|
http:
|
|
paths:
|
|
- path: /bar
|
|
backend:
|
|
serviceName: whoami
|
|
servicePort: 80
|
|
- path: /foo
|
|
backend:
|
|
serviceName: whoami
|
|
servicePort: 80
|
|
```
|
|
|
|
```yaml tab="Traefik"
|
|
apiVersion: v1
|
|
kind: ServiceAccount
|
|
metadata:
|
|
name: traefik-ingress-controller
|
|
|
|
---
|
|
apiVersion: apps/v1
|
|
kind: Deployment
|
|
metadata:
|
|
name: traefik
|
|
labels:
|
|
app: traefik
|
|
|
|
spec:
|
|
replicas: 1
|
|
selector:
|
|
matchLabels:
|
|
app: traefik
|
|
template:
|
|
metadata:
|
|
labels:
|
|
app: traefik
|
|
spec:
|
|
serviceAccountName: traefik-ingress-controller
|
|
containers:
|
|
- name: traefik
|
|
image: traefik:v3.0
|
|
args:
|
|
- --entrypoints.web.address=:80
|
|
- --providers.kubernetesingress
|
|
ports:
|
|
- name: web
|
|
containerPort: 80
|
|
|
|
---
|
|
apiVersion: v1
|
|
kind: Service
|
|
metadata:
|
|
name: traefik
|
|
spec:
|
|
type: LoadBalancer
|
|
selector:
|
|
app: traefik
|
|
ports:
|
|
- protocol: TCP
|
|
port: 80
|
|
name: web
|
|
targetPort: 80
|
|
```
|
|
|
|
```yaml tab="Whoami"
|
|
apiVersion: apps/v1
|
|
kind: Deployment
|
|
metadata:
|
|
name: whoami
|
|
labels:
|
|
app: traefiklabs
|
|
name: whoami
|
|
|
|
spec:
|
|
replicas: 2
|
|
selector:
|
|
matchLabels:
|
|
app: traefiklabs
|
|
task: whoami
|
|
template:
|
|
metadata:
|
|
labels:
|
|
app: traefiklabs
|
|
task: whoami
|
|
spec:
|
|
containers:
|
|
- name: whoami
|
|
image: traefik/whoami
|
|
ports:
|
|
- containerPort: 80
|
|
|
|
---
|
|
apiVersion: v1
|
|
kind: Service
|
|
metadata:
|
|
name: whoami
|
|
|
|
spec:
|
|
ports:
|
|
- name: http
|
|
port: 80
|
|
selector:
|
|
app: traefiklabs
|
|
task: whoami
|
|
```
|
|
|
|
## Annotations
|
|
|
|
!!! warning "Referencing resources in annotations"
|
|
|
|
In an annotation, when referencing a resource defined by another provider,
|
|
the [provider namespace syntax](../../providers/overview.md#provider-namespace) must be used.
|
|
|
|
#### On Ingress
|
|
|
|
??? info "`traefik.ingress.kubernetes.io/router.entrypoints`"
|
|
|
|
See [entry points](../routers/index.md#entrypoints) for more information.
|
|
|
|
```yaml
|
|
traefik.ingress.kubernetes.io/router.entrypoints: ep1,ep2
|
|
```
|
|
|
|
??? info "`traefik.ingress.kubernetes.io/router.middlewares`"
|
|
|
|
See [middlewares](../routers/index.md#middlewares) and [middlewares overview](../../middlewares/overview.md) for more information.
|
|
|
|
```yaml
|
|
traefik.ingress.kubernetes.io/router.middlewares: auth@file,default-prefix@kubernetescrd
|
|
```
|
|
|
|
??? info "`traefik.ingress.kubernetes.io/router.priority`"
|
|
|
|
See [priority](../routers/index.md#priority) for more information.
|
|
|
|
```yaml
|
|
traefik.ingress.kubernetes.io/router.priority: "42"
|
|
```
|
|
|
|
??? info "`traefik.ingress.kubernetes.io/router.pathmatcher`"
|
|
|
|
Overrides the default router rule type used for a path.
|
|
Only path-related matcher name can be specified: `Path`, `PathPrefix`.
|
|
|
|
Default `PathPrefix`
|
|
|
|
```yaml
|
|
traefik.ingress.kubernetes.io/router.pathmatcher: Path
|
|
```
|
|
|
|
??? info "`traefik.ingress.kubernetes.io/router.tls`"
|
|
|
|
See [tls](../routers/index.md#tls) for more information.
|
|
|
|
```yaml
|
|
traefik.ingress.kubernetes.io/router.tls: "true"
|
|
```
|
|
|
|
??? info "`traefik.ingress.kubernetes.io/router.tls.certresolver`"
|
|
|
|
See [certResolver](../routers/index.md#certresolver) for more information.
|
|
|
|
```yaml
|
|
traefik.ingress.kubernetes.io/router.tls.certresolver: myresolver
|
|
```
|
|
|
|
??? info "`traefik.ingress.kubernetes.io/router.tls.domains.n.main`"
|
|
|
|
See [domains](../routers/index.md#domains) for more information.
|
|
|
|
```yaml
|
|
traefik.ingress.kubernetes.io/router.tls.domains.0.main: example.org
|
|
```
|
|
|
|
??? info "`traefik.ingress.kubernetes.io/router.tls.domains.n.sans`"
|
|
|
|
See [domains](../routers/index.md#domains) for more information.
|
|
|
|
```yaml
|
|
traefik.ingress.kubernetes.io/router.tls.domains.0.sans: test.example.org,dev.example.org
|
|
```
|
|
|
|
??? info "`traefik.ingress.kubernetes.io/router.tls.options`"
|
|
|
|
See [options](../routers/index.md#options) for more information.
|
|
|
|
```yaml
|
|
traefik.ingress.kubernetes.io/router.tls.options: foobar@file
|
|
```
|
|
|
|
#### On Service
|
|
|
|
??? info "`traefik.ingress.kubernetes.io/service.serversscheme`"
|
|
|
|
Overrides the default scheme.
|
|
|
|
```yaml
|
|
traefik.ingress.kubernetes.io/service.serversscheme: h2c
|
|
```
|
|
|
|
??? info "`traefik.ingress.kubernetes.io/service.serverstransport`"
|
|
|
|
See [ServersTransport](../services/index.md#serverstransport) for more information.
|
|
|
|
```yaml
|
|
traefik.ingress.kubernetes.io/service.serverstransport: foobar@file
|
|
```
|
|
|
|
??? info "`traefik.ingress.kubernetes.io/service.passhostheader`"
|
|
|
|
See [pass Host header](../services/index.md#pass-host-header) for more information.
|
|
|
|
```yaml
|
|
traefik.ingress.kubernetes.io/service.passhostheader: "true"
|
|
```
|
|
|
|
??? info "`traefik.ingress.kubernetes.io/service.sticky.cookie`"
|
|
|
|
See [sticky sessions](../services/index.md#sticky-sessions) for more information.
|
|
|
|
```yaml
|
|
traefik.ingress.kubernetes.io/service.sticky.cookie: "true"
|
|
```
|
|
|
|
??? info "`traefik.ingress.kubernetes.io/service.sticky.cookie.name`"
|
|
|
|
See [sticky sessions](../services/index.md#sticky-sessions) for more information.
|
|
|
|
```yaml
|
|
traefik.ingress.kubernetes.io/service.sticky.cookie.name: foobar
|
|
```
|
|
|
|
??? info "`traefik.ingress.kubernetes.io/service.sticky.cookie.secure`"
|
|
|
|
See [sticky sessions](../services/index.md#sticky-sessions) for more information.
|
|
|
|
```yaml
|
|
traefik.ingress.kubernetes.io/service.sticky.cookie.secure: "true"
|
|
```
|
|
|
|
??? info "`traefik.ingress.kubernetes.io/service.sticky.cookie.samesite`"
|
|
|
|
See [sticky sessions](../services/index.md#sticky-sessions) for more information.
|
|
|
|
```yaml
|
|
traefik.ingress.kubernetes.io/service.sticky.cookie.samesite: "none"
|
|
```
|
|
|
|
??? info "`traefik.ingress.kubernetes.io/service.sticky.cookie.httponly`"
|
|
|
|
See [sticky sessions](../services/index.md#sticky-sessions) for more information.
|
|
|
|
```yaml
|
|
traefik.ingress.kubernetes.io/service.sticky.cookie.httponly: "true"
|
|
```
|
|
|
|
## Path Types on Kubernetes 1.18+
|
|
|
|
If the Kubernetes cluster version is 1.18+,
|
|
the new `pathType` property can be leveraged to define the rules matchers:
|
|
|
|
- `Exact`: This path type forces the rule matcher to `Path`
|
|
- `Prefix`: This path type forces the rule matcher to `PathPrefix`
|
|
|
|
Please see [this documentation](https://kubernetes.io/docs/concepts/services-networking/ingress/#path-types) for more information.
|
|
|
|
!!! warning "Multiple Matches"
|
|
In the case of multiple matches, Traefik will not ensure the priority of a Path matcher over a PathPrefix matcher,
|
|
as stated in [this documentation](https://kubernetes.io/docs/concepts/services-networking/ingress/#multiple-matches).
|
|
|
|
## TLS
|
|
|
|
### Enabling TLS via HTTP Options on Entrypoint
|
|
|
|
TLS can be enabled through the [HTTP options](../entrypoints.md#tls) of an Entrypoint:
|
|
|
|
```bash tab="CLI"
|
|
# Static configuration
|
|
--entrypoints.websecure.address=:443
|
|
--entrypoints.websecure.http.tls
|
|
```
|
|
|
|
```yaml tab="File (YAML)"
|
|
# Static configuration
|
|
entryPoints:
|
|
websecure:
|
|
address: ':443'
|
|
http:
|
|
tls: {}
|
|
```
|
|
|
|
```toml tab="File (TOML)"
|
|
# Static configuration
|
|
[entryPoints.websecure]
|
|
address = ":443"
|
|
|
|
[entryPoints.websecure.http.tls]
|
|
```
|
|
|
|
This way, any Ingress attached to this Entrypoint will have TLS termination by default.
|
|
|
|
??? example "Configuring Kubernetes Ingress Controller with TLS on Entrypoint"
|
|
|
|
```yaml tab="RBAC"
|
|
---
|
|
apiVersion: rbac.authorization.k8s.io/v1
|
|
kind: ClusterRole
|
|
metadata:
|
|
name: traefik-ingress-controller
|
|
rules:
|
|
- apiGroups:
|
|
- ""
|
|
resources:
|
|
- services
|
|
- endpoints
|
|
- secrets
|
|
verbs:
|
|
- get
|
|
- list
|
|
- watch
|
|
- apiGroups:
|
|
- extensions
|
|
- networking.k8s.io
|
|
resources:
|
|
- ingresses
|
|
- ingressclasses
|
|
verbs:
|
|
- get
|
|
- list
|
|
- watch
|
|
- apiGroups:
|
|
- extensions
|
|
- networking.k8s.io
|
|
resources:
|
|
- ingresses/status
|
|
verbs:
|
|
- update
|
|
|
|
---
|
|
apiVersion: rbac.authorization.k8s.io/v1
|
|
kind: ClusterRoleBinding
|
|
metadata:
|
|
name: traefik-ingress-controller
|
|
roleRef:
|
|
apiGroup: rbac.authorization.k8s.io
|
|
kind: ClusterRole
|
|
name: traefik-ingress-controller
|
|
subjects:
|
|
- kind: ServiceAccount
|
|
name: traefik-ingress-controller
|
|
namespace: default
|
|
```
|
|
|
|
```yaml tab="Ingress"
|
|
apiVersion: networking.k8s.io/v1
|
|
kind: Ingress
|
|
metadata:
|
|
name: myingress
|
|
annotations:
|
|
traefik.ingress.kubernetes.io/router.entrypoints: websecure
|
|
|
|
spec:
|
|
rules:
|
|
- host: example.com
|
|
http:
|
|
paths:
|
|
- path: /bar
|
|
pathType: Exact
|
|
backend:
|
|
service:
|
|
name: whoami
|
|
port:
|
|
number: 80
|
|
- path: /foo
|
|
pathType: Exact
|
|
backend:
|
|
service:
|
|
name: whoami
|
|
port:
|
|
number: 80
|
|
```
|
|
|
|
```yaml tab="Ingress v1beta1 (deprecated)"
|
|
apiVersion: networking.k8s.io/v1beta1
|
|
kind: Ingress
|
|
metadata:
|
|
name: myingress
|
|
annotations:
|
|
traefik.ingress.kubernetes.io/router.entrypoints: websecure
|
|
|
|
spec:
|
|
rules:
|
|
- host: example.com
|
|
http:
|
|
paths:
|
|
- path: /bar
|
|
backend:
|
|
serviceName: whoami
|
|
servicePort: 80
|
|
- path: /foo
|
|
backend:
|
|
serviceName: whoami
|
|
servicePort: 80
|
|
```
|
|
|
|
```yaml tab="Traefik"
|
|
apiVersion: v1
|
|
kind: ServiceAccount
|
|
metadata:
|
|
name: traefik-ingress-controller
|
|
|
|
---
|
|
apiVersion: apps/v1
|
|
kind: Deployment
|
|
metadata:
|
|
name: traefik
|
|
labels:
|
|
app: traefik
|
|
|
|
spec:
|
|
replicas: 1
|
|
selector:
|
|
matchLabels:
|
|
app: traefik
|
|
template:
|
|
metadata:
|
|
labels:
|
|
app: traefik
|
|
spec:
|
|
serviceAccountName: traefik-ingress-controller
|
|
containers:
|
|
- name: traefik
|
|
image: traefik:v3.0
|
|
args:
|
|
- --entrypoints.websecure.address=:443
|
|
- --entrypoints.websecure.http.tls
|
|
- --providers.kubernetesingress
|
|
ports:
|
|
- name: websecure
|
|
containerPort: 443
|
|
|
|
---
|
|
apiVersion: v1
|
|
kind: Service
|
|
metadata:
|
|
name: traefik
|
|
spec:
|
|
type: LoadBalancer
|
|
selector:
|
|
app: traefik
|
|
ports:
|
|
- protocol: TCP
|
|
port: 443
|
|
name: websecure
|
|
targetPort: 443
|
|
```
|
|
|
|
```yaml tab="Whoami"
|
|
apiVersion: apps/v1
|
|
kind: Deployment
|
|
metadata:
|
|
name: whoami
|
|
labels:
|
|
app: traefiklabs
|
|
name: whoami
|
|
|
|
spec:
|
|
replicas: 2
|
|
selector:
|
|
matchLabels:
|
|
app: traefiklabs
|
|
task: whoami
|
|
template:
|
|
metadata:
|
|
labels:
|
|
app: traefiklabs
|
|
task: whoami
|
|
spec:
|
|
containers:
|
|
- name: whoami
|
|
image: traefik/whoami
|
|
ports:
|
|
- containerPort: 80
|
|
|
|
---
|
|
apiVersion: v1
|
|
kind: Service
|
|
metadata:
|
|
name: whoami
|
|
|
|
spec:
|
|
ports:
|
|
- name: http
|
|
port: 80
|
|
selector:
|
|
app: traefiklabs
|
|
task: whoami
|
|
```
|
|
|
|
### Enabling TLS via Annotations
|
|
|
|
To enable TLS on the underlying router created from an Ingress, one should configure it through annotations:
|
|
|
|
```yaml
|
|
traefik.ingress.kubernetes.io/router.tls: "true"
|
|
```
|
|
|
|
For more options, please refer to the available [annotations](#on-ingress).
|
|
|
|
??? example "Configuring Kubernetes Ingress Controller with TLS"
|
|
|
|
```yaml tab="RBAC"
|
|
---
|
|
apiVersion: rbac.authorization.k8s.io/v1
|
|
kind: ClusterRole
|
|
metadata:
|
|
name: traefik-ingress-controller
|
|
rules:
|
|
- apiGroups:
|
|
- ""
|
|
resources:
|
|
- services
|
|
- endpoints
|
|
- secrets
|
|
verbs:
|
|
- get
|
|
- list
|
|
- watch
|
|
- apiGroups:
|
|
- extensions
|
|
- networking.k8s.io
|
|
resources:
|
|
- ingresses
|
|
- ingressclasses
|
|
verbs:
|
|
- get
|
|
- list
|
|
- watch
|
|
- apiGroups:
|
|
- extensions
|
|
- networking.k8s.io
|
|
resources:
|
|
- ingresses/status
|
|
verbs:
|
|
- update
|
|
|
|
---
|
|
apiVersion: rbac.authorization.k8s.io/v1
|
|
kind: ClusterRoleBinding
|
|
metadata:
|
|
name: traefik-ingress-controller
|
|
roleRef:
|
|
apiGroup: rbac.authorization.k8s.io
|
|
kind: ClusterRole
|
|
name: traefik-ingress-controller
|
|
subjects:
|
|
- kind: ServiceAccount
|
|
name: traefik-ingress-controller
|
|
namespace: default
|
|
```
|
|
|
|
```yaml tab="Ingress"
|
|
apiVersion: networking.k8s.io/v1
|
|
kind: Ingress
|
|
metadata:
|
|
name: myingress
|
|
annotations:
|
|
traefik.ingress.kubernetes.io/router.entrypoints: websecure
|
|
traefik.ingress.kubernetes.io/router.tls: true
|
|
|
|
spec:
|
|
rules:
|
|
- host: example.com
|
|
http:
|
|
paths:
|
|
- path: /bar
|
|
pathType: Exact
|
|
backend:
|
|
service:
|
|
name: whoami
|
|
port:
|
|
number: 80
|
|
- path: /foo
|
|
pathType: Exact
|
|
backend:
|
|
service:
|
|
name: whoami
|
|
port:
|
|
number: 80
|
|
```
|
|
|
|
```yaml tab="Ingress v1beta1 (deprecated)"
|
|
apiVersion: networking.k8s.io/v1beta1
|
|
kind: Ingress
|
|
metadata:
|
|
name: myingress
|
|
annotations:
|
|
traefik.ingress.kubernetes.io/router.entrypoints: websecure
|
|
traefik.ingress.kubernetes.io/router.tls: true
|
|
|
|
spec:
|
|
rules:
|
|
- host: example.com
|
|
http:
|
|
paths:
|
|
- path: /bar
|
|
backend:
|
|
serviceName: whoami
|
|
servicePort: 80
|
|
- path: /foo
|
|
backend:
|
|
serviceName: whoami
|
|
servicePort: 80
|
|
```
|
|
|
|
```yaml tab="Traefik"
|
|
apiVersion: v1
|
|
kind: ServiceAccount
|
|
metadata:
|
|
name: traefik-ingress-controller
|
|
|
|
---
|
|
apiVersion: apps/v1
|
|
kind: Deployment
|
|
metadata:
|
|
name: traefik
|
|
labels:
|
|
app: traefik
|
|
|
|
spec:
|
|
replicas: 1
|
|
selector:
|
|
matchLabels:
|
|
app: traefik
|
|
template:
|
|
metadata:
|
|
labels:
|
|
app: traefik
|
|
spec:
|
|
serviceAccountName: traefik-ingress-controller
|
|
containers:
|
|
- name: traefik
|
|
image: traefik:v3.0
|
|
args:
|
|
- --entrypoints.websecure.address=:443
|
|
- --providers.kubernetesingress
|
|
ports:
|
|
- name: websecure
|
|
containerPort: 443
|
|
|
|
---
|
|
apiVersion: v1
|
|
kind: Service
|
|
metadata:
|
|
name: traefik
|
|
spec:
|
|
type: LoadBalancer
|
|
selector:
|
|
app: traefik
|
|
ports:
|
|
- protocol: TCP
|
|
port: 443
|
|
name: websecure
|
|
targetPort: 443
|
|
```
|
|
|
|
```yaml tab="Whoami"
|
|
apiVersion: apps/v1
|
|
kind: Deployment
|
|
metadata:
|
|
name: whoami
|
|
labels:
|
|
app: traefiklabs
|
|
name: whoami
|
|
|
|
spec:
|
|
replicas: 2
|
|
selector:
|
|
matchLabels:
|
|
app: traefiklabs
|
|
task: whoami
|
|
template:
|
|
metadata:
|
|
labels:
|
|
app: traefiklabs
|
|
task: whoami
|
|
spec:
|
|
containers:
|
|
- name: whoami
|
|
image: traefik/whoami
|
|
ports:
|
|
- containerPort: 80
|
|
|
|
---
|
|
apiVersion: v1
|
|
kind: Service
|
|
metadata:
|
|
name: whoami
|
|
|
|
spec:
|
|
ports:
|
|
- name: http
|
|
port: 80
|
|
selector:
|
|
app: traefiklabs
|
|
task: whoami
|
|
```
|
|
|
|
### Certificates Management
|
|
|
|
??? example "Using a secret"
|
|
|
|
```yaml tab="Ingress"
|
|
apiVersion: networking.k8s.io/v1
|
|
kind: Ingress
|
|
metadata:
|
|
name: foo
|
|
namespace: production
|
|
|
|
spec:
|
|
rules:
|
|
- host: example.net
|
|
http:
|
|
paths:
|
|
- path: /bar
|
|
pathType: Exact
|
|
backend:
|
|
service:
|
|
name: service1
|
|
port:
|
|
number: 80
|
|
# Only selects which certificate(s) should be loaded from the secret, in order to terminate TLS.
|
|
# Doesn't enable TLS for that ingress (hence for the underlying router).
|
|
# Please see the TLS annotations on ingress made for that purpose.
|
|
tls:
|
|
- secretName: supersecret
|
|
```
|
|
|
|
```yaml tab="Ingress v1beta1 (deprecated)"
|
|
apiVersion: networking.k8s.io/v1beta1
|
|
kind: Ingress
|
|
metadata:
|
|
name: foo
|
|
namespace: production
|
|
|
|
spec:
|
|
rules:
|
|
- host: example.net
|
|
http:
|
|
paths:
|
|
- path: /bar
|
|
backend:
|
|
serviceName: service1
|
|
servicePort: 80
|
|
# Only selects which certificate(s) should be loaded from the secret, in order to terminate TLS.
|
|
# Doesn't enable TLS for that ingress (hence for the underlying router).
|
|
# Please see the TLS annotations on ingress made for that purpose.
|
|
tls:
|
|
- secretName: supersecret
|
|
```
|
|
|
|
```yaml tab="Secret"
|
|
apiVersion: v1
|
|
kind: Secret
|
|
metadata:
|
|
name: supersecret
|
|
|
|
data:
|
|
tls.crt: LS0tLS1CRUdJTiBDRVJUSUZJQ0FURS0tLS0tCi0tLS0tRU5EIENFUlRJRklDQVRFLS0tLS0=
|
|
tls.key: LS0tLS1CRUdJTiBQUklWQVRFIEtFWS0tLS0tCi0tLS0tRU5EIFBSSVZBVEUgS0VZLS0tLS0=
|
|
```
|
|
|
|
TLS certificates can be managed in Secrets objects.
|
|
|
|
!!! info
|
|
|
|
Only TLS certificates provided by users can be stored in Kubernetes Secrets.
|
|
[Let's Encrypt](../../https/acme.md) certificates cannot be managed in Kubernetes Secrets yet.
|
|
|
|
### Communication Between Traefik and Pods
|
|
|
|
Traefik automatically requests endpoint information based on the service provided in the ingress spec.
|
|
Although Traefik will connect directly to the endpoints (pods),
|
|
it still checks the service port to see if TLS communication is required.
|
|
|
|
There are 3 ways to configure Traefik to use https to communicate with pods:
|
|
|
|
1. If the service port defined in the ingress spec is `443` (note that you can still use `targetPort` to use a different port on your pod).
|
|
1. If the service port defined in the ingress spec has a name that starts with https (such as `https-api`, `https-web` or just `https`).
|
|
1. If the service spec includes the annotation `traefik.ingress.kubernetes.io/service.serversscheme: https`.
|
|
|
|
If either of those configuration options exist, then the backend communication protocol is assumed to be TLS,
|
|
and will connect via TLS automatically.
|
|
|
|
!!! info
|
|
|
|
Please note that by enabling TLS communication between traefik and your pods,
|
|
you will have to have trusted certificates that have the proper trust chain and IP subject name.
|
|
If this is not an option, you may need to skip TLS certificate verification.
|
|
See the [insecureSkipVerify](../../routing/overview.md#insecureskipverify) setting for more details.
|
|
|
|
## Global Default Backend Ingresses
|
|
|
|
Ingresses can be created that look like the following:
|
|
|
|
```yaml tab="Ingress"
|
|
apiVersion: networking.k8s.io/v1
|
|
kind: Ingress
|
|
metadata:
|
|
name: cheese
|
|
|
|
spec:
|
|
defaultBackend:
|
|
service:
|
|
name: stilton
|
|
port:
|
|
number: 80
|
|
```
|
|
|
|
```yaml tab="Ingress v1beta1 (deprecated)"
|
|
apiVersion: networking.k8s.io/v1beta1
|
|
kind: Ingress
|
|
metadata:
|
|
name: cheese
|
|
|
|
spec:
|
|
defaultBackend:
|
|
serviceName: stilton
|
|
serverPort: 80
|
|
```
|
|
|
|
This ingress follows the Global Default Backend property of ingresses.
|
|
This will allow users to create a "default router" that will match all unmatched requests.
|
|
|
|
!!! info
|
|
|
|
Due to Traefik's use of priorities, you may have to set this ingress priority lower than other ingresses in your environment,
|
|
to avoid this global ingress from satisfying requests that could match other ingresses.
|
|
|
|
To do this, use the `traefik.ingress.kubernetes.io/router.priority` annotation (as seen in [Annotations on Ingress](#on-ingress)) on your ingresses accordingly.
|
|
|
|
{!traefik-for-business-applications.md!}
|