Kubernetes nginx-Ingress reverse proxy some paths - kubernetes

Question

i'm trying to reverse proxy using nginx-ingress.
but i cannot find a way to apply reverse proxy in only certain paths
for example, i want apply reverse proxy http://myservice.com/about/* from CDN static resources
and other paths serve my service (in example, it means 'my-service-web' service)
maybe in terms of k8s, CDN means "public external service"
in result,
http://myservice.com/about/* -> reverse proxy from CDN (external service)
http://myservice.com/* -> my-service-web (internal service)
here is my ingress.yaml file
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: my-service-web
namespace: my-service
annotations:
kubernetes.io/ingress.class: nginx-ingress
nginx.ingress.kubernetes.io/server-snippet: |
location ~ /about/(.*) {
proxy_pass https://CDN_URL/$1${is_args}${args};
......and other proxy settings
}
spec:
rules:
- host: myservice.com
http:
paths:
- path: /about
........how do i configuration this?
- path: /*
backend:
serviceName: my-service-web
servicePort: 80
how do i set rules and annotations?

Answer 1

You can create a service with externalName type that will point to your external service (CDN) and it's well explained in this blog post, for example:
apiVersion: v1
kind: Service
metadata:
name: my-service
namespace: my-service
spec:
type: ExternalName
externalName: FQDN
and then use it in your ingress rules by referring to the service name.