Add example using github oauth application
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Manuel de Brito Fontes
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7 changed files with 159 additions and 116 deletions
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@ -57,7 +57,7 @@ SNI + TCP | TLS routing based on SNI hostname | nginx | Advanced
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Name | Description | Platform | Complexity Level
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-----| ----------- | ---------- | ----------------
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Basic auth | password protect your website | nginx | Intermediate
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[External auth plugin](external-auth/README.md) | defer to an external auth service | nginx | Intermediate
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[External auth plugin](external-auth/nginx/README.md) | defer to an external auth service | nginx | Intermediate
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## Protocols
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@ -1,45 +0,0 @@
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## External Authentication
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### Overview
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The `auth-url` and `auth-signin` annotations allow you to use an external
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authentication provider to protect your Ingress resources.
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(Note, this annotation requires `nginx-ingress-controller v0.9.0` or greater.)
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### Key Detail
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This functionality is enabled by deploying multiple Ingress objects for a single host.
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One Ingress object has no special annotations and handles authentication.
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Other Ingress objects can then be annotated in such a way that require the user to
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authenticate against the first Ingress's endpoint, and can redirect `401`s to the
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same endpoint.
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Sample:
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```
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...
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metadata:
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name: application
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annotations:
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"ingress.kubernetes.io/auth-url": "https://$host/oauth2/auth"
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"ingress.kubernetes.io/signin-url": "https://$host/oauth2/sign_in"
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...
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```
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### Example: OAuth2 Proxy + Kubernetes-Dashboard
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This example will show you how to deploy [`oauth2_proxy`](https://github.com/bitly/oauth2_proxy)
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into a Kubernetes cluster and use it to protect the Kubernetes Dashboard.
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#### Prepare:
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1. `export DOMAIN="somedomain.io"`
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2. Install `nginx-ingress`. If you haven't already, consider using `helm`: `$ helm install stable/nginx-ingress`
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3. Make sure you have a TLS cert added as a Secret named `ingress-tls` that corresponds to your `$DOMAIN`.
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### Deploy: `oauth2_proxy`
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This is the Deployment object that runs `oauth2_proxy`.
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@ -1,27 +0,0 @@
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---
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apiVersion: extensions/v1beta1
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kind: Ingress
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metadata:
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name: dashboard
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namespace: kube-system
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annotations:
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"ingress.kubernetes.io/auth-url": "https://$host/oauth2/auth"
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"ingress.kubernetes.io/auth-signin": "https://$host/oauth2/sign_in"
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spec:
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tls:
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- secretName: 'foo-secret-966'
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hosts:
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- 'foo-966.bar.com'
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rules:
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- host: 'foo-966.bar.com'
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http:
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paths:
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- path: /
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backend:
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serviceName: kubernetes-dashboard
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servicePort: 80
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- parh: /oauth2
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backend:
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serviceName: oauth2proxy
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servicePort: 4180
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@ -1,43 +0,0 @@
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apiVersion: extensions/v1beta1
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kind: Deployment
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metadata:
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name: oauth2-proxy
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labels:
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k8s-app: oauth2proxy
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spec:
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replicas: 1
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template:
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metadata:
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labels:
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k8s-app: oauth2proxy
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spec:
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volumes:
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- name: oauth2proxy-secret
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secret:
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secretName: oauth2proxy
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containers:
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- name: oauth2proxy
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image: docker.io/colemickens/oauth2_proxy:latest
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imagePullPolicy: Always
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ports:
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- containerPort: 4180
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args:
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- --provider=github
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- --email-domain=*
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---
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apiVersion: v1
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kind: Service
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metadata:
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labels:
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k8s-app: oauth2proxy
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name: oauth2proxy
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spec:
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ports:
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- name: http
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port: 4180
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protocol: TCP
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targetPort: 4180
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selector:
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k8s-app: oauth2proxy
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64
examples/external-auth/nginx/README.md
Normal file
64
examples/external-auth/nginx/README.md
Normal file
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@ -0,0 +1,64 @@
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## External Authentication
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### Overview
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The `auth-url` and `auth-signin` annotations allow you to use an external
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authentication provider to protect your Ingress resources.
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(Note, this annotation requires `nginx-ingress-controller v0.9.0` or greater.)
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### Key Detail
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This functionality is enabled by deploying multiple Ingress objects for a single host.
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One Ingress object has no special annotations and handles authentication.
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Other Ingress objects can then be annotated in such a way that require the user to
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authenticate against the first Ingress's endpoint, and can redirect `401`s to the
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same endpoint.
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Sample:
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```
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...
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metadata:
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name: application
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annotations:
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"ingress.kubernetes.io/auth-url": "https://$host/oauth2/auth"
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"ingress.kubernetes.io/signin-url": "https://$host/oauth2/sign_in"
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...
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```
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### Example: OAuth2 Proxy + Kubernetes-Dashboard
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This example will show you how to deploy [`oauth2_proxy`](https://github.com/bitly/oauth2_proxy)
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into a Kubernetes cluster and use it to protect the Kubernetes Dashboard.
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#### Prepare:
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1. Install the kubernetes dashboard
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```console
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kubectl create -f https://raw.githubusercontent.com/kubernetes/kops/master/addons/kubernetes-dashboard/v1.5.0.yaml
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```
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2. Create a custom Github OAuth application https://github.com/settings/applications/new
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- Homepage URL is the FQDN in the Ingress rule, like `https://foo.bar.com`
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- Authorization callback URL is the same as the base FQDN plus `/oauth2`, like `https://foo.bar.com/oauth2`
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3. Configure oauth2_proxy values in the file oauth2-proxy.yaml with the values:
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- OAUTH2_PROXY_CLIENT_ID with the github `<Client ID>`
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- OAUTH2_PROXY_CLIENT_SECRET with the github `<Client Secret>`
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- OAUTH2_PROXY_COOKIE_SECRET with value of `python -c 'import os,base64; print base64.b64encode(os.urandom(16))'`
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4. Customize the contents of the file dashboard-ingress.yaml:
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Replace `__INGRESS_HOST__` with a valid FQDN and `__INGRESS_SECRET__` with a Secret with a valid SSL certificate.
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5. Deploy the oauth2 proxy and the ingress rules running:
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```console
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$ kubectl create -f oauth2-proxy.yaml,dashboard-ingress.yaml
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```
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Test the oauth integration accessing the configured URL, like `https://foo.bar.com`
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38
examples/external-auth/nginx/dashboard-ingress.yaml
Normal file
38
examples/external-auth/nginx/dashboard-ingress.yaml
Normal file
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@ -0,0 +1,38 @@
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apiVersion: extensions/v1beta1
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kind: Ingress
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metadata:
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annotations:
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ingress.kubernetes.io/auth-signin: https://$host/oauth2/sign_in
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ingress.kubernetes.io/auth-url: https://$host/oauth2/auth
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name: external-auth-oauth2
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namespace: kube-system
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spec:
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rules:
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- host: __INGRESS_HOST__
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http:
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paths:
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- backend:
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serviceName: kubernetes-dashboard
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servicePort: 80
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path: /
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---
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apiVersion: extensions/v1beta1
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kind: Ingress
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metadata:
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name: oauth2-proxy
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namespace: kube-system
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spec:
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rules:
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- host: __INGRESS_HOST__
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http:
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paths:
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- backend:
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serviceName: oauth2-proxy
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servicePort: 4180
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path: /oauth2
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tls:
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- hosts:
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- __INGRESS_HOST__
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secretName: __INGRESS_SECRET__
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56
examples/external-auth/nginx/oauth2-proxy.yaml
Normal file
56
examples/external-auth/nginx/oauth2-proxy.yaml
Normal file
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@ -0,0 +1,56 @@
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apiVersion: extensions/v1beta1
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kind: Deployment
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metadata:
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labels:
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k8s-app: oauth2-proxy
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name: oauth2-proxy
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namespace: kube-system
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spec:
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replicas: 1
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selector:
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matchLabels:
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k8s-app: oauth2-proxy
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template:
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metadata:
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labels:
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k8s-app: oauth2-proxy
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spec:
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containers:
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- args:
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- --provider=github
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- --email-domain=*
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- --upstream=file:///dev/null
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- --http-address=0.0.0.0:4180
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# Register a new application
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# https://github.com/settings/applications/new
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env:
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- name: OAUTH2_PROXY_CLIENT_ID
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value: <Client ID>
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- name: OAUTH2_PROXY_CLIENT_SECRET
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value: <Client Secret>
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# python -c 'import os,base64; print base64.b64encode(os.urandom(16))'
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- name: OAUTH2_PROXY_COOKIE_SECRET
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value: SECRET
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image: docker.io/colemickens/oauth2_proxy:latest
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imagePullPolicy: Always
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name: oauth2-proxy
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ports:
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- containerPort: 4180
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protocol: TCP
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---
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apiVersion: v1
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kind: Service
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metadata:
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labels:
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k8s-app: oauth2-proxy
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name: oauth2-proxy
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spec:
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ports:
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- name: http
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port: 4180
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protocol: TCP
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targetPort: 4180
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selector:
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k8s-app: oauth2-proxy
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