Simply redirecting non-www to www

Networking
1

Since this is so common, seems this should be easy to do in VirtualService, but having a hard time doing simple HTTPRedirect on non-www domain to www. Here’s what I’ve got (appropriate Gateway is passing the traffic):

  gateways:
  - example-gateway
  hosts:
  - example.net
  http:
  - match:
    - headers:
        host:
          regex: "^example.net"
    redirect:
      authority: www.example.net

Tried a couple of variations with match authority, but just can’t get the redirect to work. Where am I going wrong?

3

Resolved, and good news it is as trivial as it should be, just note the spec.hosts section in this simplified example, where you can add all of the domains you want a particular VirtualService to handlle.

kind: VirtualService
metadata:
  name: www-example
  namespace: example
  version: v3
spec:
  gateways:
  - example-gateway
  hosts:
  - example.net
  - www.example.net
  http:
  - match:
    - authority:
        exact:
          example.net
    redirect:
      authority: www.example.net
  http:
  - match:
    - uri:
        prefix: /
    route:
    - destination:
        port:
          number: 80
        host: nginx-example-service
1 Like
4

I did a little refactoring. Source snippet that works for me

apiVersion: networking.istio.io/v1beta1
kind: VirtualService
metadata:
  annotations:
  name: example-virtual-service
  namespace: prod
spec:
  gateways:
  - example-gateway
  hosts:
  - example.com
  - www.examle.com
  http:
  - match:
    - authority:
        exact:
          example.com
    redirect:
      authority: www.example.com
  - match:
    - uri:
        prefix: /
    route:
    - destination:
        host: nginx
        port:
          number: 80