K8s - > nginx Ingress：SSO

Question

我有一个具有HTTP Basic Auth的服务。在它面前我有nginx Ingress，他也有基本认证。在使用Ingress登录后如何附加授权标头和凭据，以实现单点登录？

这是我的Ingress的配置：

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  annotations:
    kubernetes.io/ingress.class: nginx
    nginx.ingress.kubernetes.io/auth-realm: Authentication Required
    nginx.ingress.kubernetes.io/auth-secret: kibana-user-basic-auth
    nginx.ingress.kubernetes.io/auth-type: basic
  name: kibana-user
  namespace: {{.Release.Namespace}}
spec:
  tls:
  - secretName: kibana-tls
    hosts:
    - {{.Values.ingress.user.host}}
  rules:
  - host: {{.Values.ingress.user.host}}
    http:
      paths:
      - backend:
          serviceName: kibana-logging
          servicePort: {{ .Values.kibana.service.internalPort }}
        path: /

Answer 1

您可以使用注释nginx.ingress.kubernetes.io/configuration-snippet: proxy_set_header Authorization $http_authorization;将Authorization标头转发到后端服务。

Ingress资源应如下所示

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  annotations:
    kubernetes.io/ingress.class: nginx
    nginx.ingress.kubernetes.io/auth-realm: Authentication Required
    nginx.ingress.kubernetes.io/auth-secret: kibana-user-basic-auth
    nginx.ingress.kubernetes.io/auth-type: basic
    nginx.ingress.kubernetes.io/configuration-snippet: "proxy_set_header Authorization $http_authorization;"
  name: kibana-user
  namespace: {{.Release.Namespace}}
spec:
  tls:
  - secretName: kibana-tls
    hosts:
    - {{.Values.ingress.user.host}}
  rules:
  - host: {{.Values.ingress.user.host}}
    http:
      paths:
      - backend:
          serviceName: kibana-logging
          servicePort: {{ .Values.kibana.service.internalPort }}
        path: /

Answer 2

我想你可以在nginx.ingress.kubernetes.io/auth-response-headers annotation中传播Authorization标头：

nginx.ingress.kubernetes.io/auth-response-headers: Authorization

或者，通过proxy_set_header描述的configuration snippet注释在目标Ingress位置内应用here，可以实现相同方法的替代方法：

annotations:
    nginx.ingress.kubernetes.io/configuration-snippet: |
        proxy_set_header Authorization "Basic base64 encode value";