K3d: [HELP] Expose service by Ingress subpath

Created on 8 Oct 2020 · 3Comments · Source: rancher/k3d

What did you do

How was the cluster created?
- k3d cluster create -p "8080:80@loadbalancer"
What did you do afterwards?

I try to apply the following yaml to expose whale-service on localhost:8080/whale by ingress, but it fail

apiVersion: apps/v1
kind: Deployment
metadata:
  name: whale-nginx
spec:
  replicas: 1
  selector:
    matchLabels:
      app: whale-nginx
  template:
    metadata:
      labels:
        app: whale-nginx
    spec:
      containers:
        - name: whale
          image: hcwxd/blue-whale
          ports:
            - containerPort: 3000
---
apiVersion: v1
kind: Service
metadata:
  name: whale-service
spec:
  type: NodePort
  selector:
    app: whale-nginx
  ports:
    - port: 3000
---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: whale-ingress
spec:
  rules:
    - http:
        paths:
          - path: /whale
            backend:
              serviceName: whale-service
              servicePort: 3000

However, I get

curl -L localhost:8080/whale                                                                             
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Error</title>
</head>
<body>
<pre>Cannot GET /whale</pre>
</body>
</html>

Then, I change path: /whale to path: / and then curl -L localhost:8080 will return the correct response.

What should I change to correctly expose ingress on subpath?

Which OS & Architecture

System Version: macOS 10.15.6 (19G73)
Kernel Version: Darwin 19.6.0
Boot Volume: Macintosh HD

Which version of `k3d`

k3d version v3.1.2
k3s version v1.18.9-k3s1 (default)

Which version of docker

Client: Docker Engine - Community
 Cloud integration  0.1.18
 Version:           19.03.13
 API version:       1.40
 Go version:        go1.13.15
 Git commit:        4484c46d9d
 Built:             Wed Sep 16 16:58:31 2020
 OS/Arch:           darwin/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          19.03.13
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.13.15
  Git commit:       4484c46d9d
  Built:            Wed Sep 16 17:07:04 2020
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          v1.3.7
  GitCommit:        8fba4e9a7d01810a393d5d25a3621dc101981175
 runc:
  Version:          1.0.0-rc10
  GitCommit:        dc9208a3303feef5b3839f4323d9beb36df0a9dd
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683

bug

Source

kafai97

Most helpful comment

Hello, you might want to remove the /whale from your path before calling the service (the ingress does not remove it, it's just a rule match). Check the traefik annotations regarding rewrite-path : traefik.ingress.kubernetes.io/rewrite-target: /