I've read the docs a thousand times but I still don't understand how I would use the nginx.ingress.kubernetes.io/app-root annotation.
Can someone please provide an example + description in plain english?
Docs: https://kubernetes.github.io/ingress-nginx/examples/rewrite/
I might as well copy paste the entire text; it's not that much.
nginx.ingress.kubernetes.io/app-root Defines the Application Root that the Controller must redirect if it's in '/' context stringApp Root
Create an Ingress rule with a app-root annotation:
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
annotations:
nginx.ingress.kubernetes.io/app-root: /app1
name: approot
namespace: default
spec:
rules:
- host: approot.bar.com
http:
paths:
- backend:
serviceName: http-svc
servicePort: 80
path: /Check the rewrite is working
$ curl -I -k http://approot.bar.com/
HTTP/1.1 302 Moved Temporarily
Server: nginx/1.11.10
Date: Mon, 13 Mar 2017 14:57:15 GMT
Content-Type: text/html
Content-Length: 162
Location: http://stickyingress.example.com/app1
Connection: keep-aliveIt simply redirects requests coming to '/' to a different path internally. This is useful if your application's root path is different from '/'.
For example, say your application is listening in '/server', you'd set your Nginx annotiations like:
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
annotations:
nginx.ingress.kubernetes.io/app-root: /serverAt this point, any incoming requests at example.com/ would be rewritten internally to go example.com/server, allowing your application to listen to them without having to explicitly specify incoming '/' requests.