URL Rewrite
TOC
Basic Concepts
ALB can rewrite the request URL before forwarding it to the backend.
You can use regex capture groups to rewrite the URL.
Configuration
via ingress annotation
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
nginx.ingress.kubernetes.io/rewrite-target: /$2
name: demo
spec:
ingressClassName: alb
rules:
- http:
paths:
- backend:
service:
name: frontend
port:
number: 8080
path: /(prefix-x)(/|$)(.*)
pathType: ImplementationSpecific
via rule
apiVersion: crd.alauda.io/v1
kind: Rule
metadata:
labels:
alb2.cpaas.io/frontend: alb-00080
alb2.cpaas.io/name: alb
name: demo
namespace: cpaas-system
spec:
dslx:
- type: URL
values:
- - REGEX
- ^/(prefix-x)(/|$)(.*)
rewrite_base: /(prefix-x)(/|$)(.*)
rewrite_target: /$3
Example: client requests /prefix-x/abc; backend receives /abc.
