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Rewrite

This example demonstrates how to use the Rewrite annotations

Prerequisites

You will need to make sure you Ingress targets exactly one Ingress controller by specifying the ingress.class annotation, and that you have an ingress controller running in your cluster.

Deployment

Rewriting can be controlled using the following annotations:

Name Description Values
nginx.ingress.kubernetes.io/rewrite-target Target URI where the traffic must be redirected string
nginx.ingress.kubernetes.io/add-base-url indicates if is required to add a base tag in the head of the responses from the upstream servers bool
nginx.ingress.kubernetes.io/base-url-scheme Override for the scheme passed to the base tag string
nginx.ingress.kubernetes.io/ssl-redirect Indicates if the location section is accessible SSL only (defaults to True when Ingress contains a Certificate) bool
nginx.ingress.kubernetes.io/force-ssl-redirect Forces the redirection to HTTPS even if the Ingress is not TLS Enabled bool
nginx.ingress.kubernetes.io/app-root Defines the Application Root that the Controller must redirect if it's not in '/' context string

Validation

Rewrite Target

Create an Ingress rule with a rewrite annotation:

$ echo "
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
  name: rewrite
  namespace: default
spec:
  rules:
  - host: rewrite.bar.com
    http:
      paths:
      - backend:
          serviceName: http-svc
          servicePort: 80
        path: /something
" | kubectl create -f -

Check the rewrite is working

$ curl -v http://172.17.4.99/something -H 'Host: rewrite.bar.com'
*   Trying 172.17.4.99...
* Connected to 172.17.4.99 (172.17.4.99) port 80 (#0)
> GET /something HTTP/1.1
> Host: rewrite.bar.com
> User-Agent: curl/7.43.0
> Accept: */*
>
< HTTP/1.1 200 OK
< Server: nginx/1.11.0
< Date: Tue, 31 May 2016 16:07:31 GMT
< Content-Type: text/plain
< Transfer-Encoding: chunked
< Connection: keep-alive
<
CLIENT VALUES:
client_address=10.2.56.9
command=GET
real path=/
query=nil
request_version=1.1
request_uri=http://rewrite.bar.com:8080/

SERVER VALUES:
server_version=nginx: 1.9.11 - lua: 10001

HEADERS RECEIVED:
accept=*/*
connection=close
host=rewrite.bar.com
user-agent=curl/7.43.0
x-forwarded-for=10.2.56.1
x-forwarded-host=rewrite.bar.com
x-forwarded-port=80
x-forwarded-proto=http
x-real-ip=10.2.56.1
BODY:
* Connection #0 to host 172.17.4.99 left intact
-no body in request-

App Root

Create an Ingress rule with a app-root annotation:

$ echo "
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: /
" | kubectl create -f -

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-alive