Traefik: Replace Path Middleware not working as expected

Traefik Traefik v2
,
1

Hi Team,

I have a requirement to replace the path from '/monitoring' to '/' before forwarding to the service. But it is not working as expected. '/monitoring' is forwading to the service and for '/' we are getting 404.

Traefik Middleware

apiVersion: traefik.containo.us/v1alpha1
kind: Middleware
metadata:
  name: replace-path
spec:
  replacePath:
    path: /

Traefik ingressroute

apiVersion: traefik.containo.us/v1alpha1
kind: IngressRoute
metadata:
  name: prometheus-ingroute
spec:
  entryPoints:
  - web
  routes:
  - kind: Rule
    match: PathPrefix(`/monitoring`)
    middlewares:
    - name: replace-path
      namespace: acs
    services:
    - name: prometheus-service
      namespace: monitoring
      port: 9090

Traefik logs

10.25.134.144 - - [22/Aug/2023:12:57:26 +0000] "GET /monitoring HTTP/1.1" 302 29 "-" "-" 3036 "platform-prometheus-ingroute-aefcecd63388ac21cfa5@kubernetescrd" "http://192.168.27.74:9090" 0ms
10.25.134.144 - - [22/Aug/2023:12:57:26 +0000] "GET /graph HTTP/1.1" 404 19 "-" "-" 3037 "-" "-" 0ms

When we are hitting 'traefik IP:port/monitoring' from browser it is redirecting to the POD but when it is replacing the path to 'traefik IP:port/' it is not redirecting to POD.

Am I doing something wrong here? Do we need to create the middleware in the same namespace where service is running or it is independent of namespace?

2

You always want the path to be exactly /?

If not, have you checked ReplacePathRegex?

3

Yes, always the path will be ' / ' only.

4

I tried replacePathRegex also, it is not working
Traefik middleware

apiVersion: traefik.containo.us/v1alpha1
kind: Middleware
metadata:
  name: replace-path-regex
spec:
  replacePathRegex:
    regex: ^/monitoring(.*)
    replacement: /

Again got same logs in Traefik

10.25.133.173 - - [23/Aug/2023:04:43:26 +0000] "GET /monitoring HTTP/1.1" 302 29 "-" "-" 16063 "acs-prometheus-ingroute-aefcecd63388ac21cfa5@kubernetescrd" "http://192.168.27.74:9090" 0ms
10.25.133.173 - - [23/Aug/2023:04:43:26 +0000] "GET /graph HTTP/1.1" 404 19 "-" "-" 16064 "-" "-" 0ms
5

Have you tried Traefik debug log?

6

Not tried. Will enable debug logs and check.