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Applying ingress.kubenretes.io/enable-cors annotation in ingress enables CORS for all HTTP Frontend.
apiVersion: voyager.appscode.com/v1beta1
kind: Ingress
metadata:
name: test-ingress
namespace: default
annotation:
ingress.kubernetes.io/enable-cors: 'true'
spec:
rules:
- host: foo.bar.com
http:
paths:
- backend:
serviceName: s1
servicePort: '80'
- host: bar.foo.com
http:
paths:
- backend:
serviceName: s2
servicePort: '80'
Applying the annotation in ingress will have the following effects, will add the CORS Header in the response.
$ curl -v -X 'GET' -k -H 'Origin: foo.bar.com' 'http://foo.bar.com'
HTTP/1.1 200 OK
Date: Mon, 02 Oct 2017 12:31:00 GMT
Content-Length: 280
Content-Type: text/plain; charset=utf-8
Access-Control-Allow-Origin: foo.bar.com
Access-Control-Allow-Methods: GET, HEAD, OPTIONS, POST, PUT
Access-Control-Allow-Credentials: true
Access-Control-Allow-Headers: Origin, Accept, X-Requested-With, Content-Type, Access-Control-Request-Method, Access-Control-Request-Headers, Authorization