You are looking at the documentation of a prior release. To read the documentation of the latest release, please
visit here.
New to Voyager? Please start here.
CORS
Voyager can enable and configure CORS for all HTTP frontends via following ingress annotations:
ingress.appscode.com/enable-cors: If set totrueenables CORS for all HTTP Frontend. By default CORS is disabled.ingress.appscode.com/cors-allow-headers: Specifies allowed headers when CORS enabled. Default value isDNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization.ingress.appscode.com/cors-allow-methods: Specifies allowed methods when CORS enabled. Default value isGET,PUT,POST,DELETE,PATCH,OPTIONS.ingress.appscode.com/cors-allow-origin: Specifies allowed origins when CORS enabled. Default value is*.
Ingress Example
First create a test-server and expose it via service:
$ kubectl run test-server --image=gcr.io/google_containers/echoserver:1.8
deployment "test-server" created
$ kubectl expose deployment test-server --type=LoadBalancer --port=80 --target-port=8080
service "test-server" exposed
Then create the ingress:
$ kubectl apply -f test-ingress.yaml
apiVersion: voyager.appscode.com/v1
kind: Ingress
metadata:
name: test-ingress
namespace: default
annotations:
ingress.appscode.com/enable-cors: "true"
ingress.appscode.com/cors-allow-headers: "Keep-Alive,User-Agent"
ingress.appscode.com/cors-allow-methods: "GET,PUT"
ingress.appscode.com/cors-allow-origin: "http://foo.example"
spec:
rules:
- host: voyager.appscode.test
http:
paths:
- path: /foo
backend:
service:
name: test-server
port:
number: 80
$ kubectl get pods,svc
NAME READY STATUS RESTARTS AGE
po/test-server-68ddc845cd-x7dtv 1/1 Running 0 1d
po/voyager-test-ingress-5b758664f6-hjwjb 1/1 Running 0 20m
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
svc/kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 3d
svc/test-server LoadBalancer 10.105.13.31 <pending> 80:30390/TCP 1d
svc/voyager-test-ingress LoadBalancer 10.106.53.141 <pending> 80:32218/TCP 1h
$ minikube service --url voyager-test-ingress
http://192.168.99.100:32218
Applying the annotation in ingress will have the following effects, will add the CORS Header in the response.
$ curl -v -H 'Host: voyager.appscode.test' 192.168.99.100:32218/foo
* Trying 192.168.99.100...
* Connected to 192.168.99.100 (192.168.99.100) port 32218 (#0)
> GET /foo HTTP/1.1
> Host: voyager.appscode.test
> User-Agent: curl/7.47.0
> Accept: */*
>
< HTTP/1.1 200 OK
< Date: Thu, 15 Feb 2018 05:06:49 GMT
< Content-Type: text/plain
< Transfer-Encoding: chunked
< Server: echoserver
< Access-Control-Allow-Origin: http://foo.example
< Access-Control-Allow-Methods: GET,PUT
< Access-Control-Allow-Credentials: true
< Access-Control-Allow-Headers: Keep-Alive,User-Agent
<
Hostname: test-server-68ddc845cd-x7dtv
Pod Information:
-no pod information available-
Server values:
server_version=nginx: 1.13.3 - lua: 10008
Request Information:
client_address=172.17.0.5
method=GET
real path=/foo
query=
request_version=1.1
request_uri=http://voyager.appscode.test:8080/foo
Request Headers:
accept=*/*
connection=close
host=voyager.appscode.test
user-agent=curl/7.47.0
x-forwarded-for=172.17.0.1
Request Body:
-no body in request-
* Connection #0 to host 192.168.99.100 left intact