I have just joined an ongoing project which is using a Spring Boot app. After moving the app on k8s I still have an issue as the app always redirects to /login without taking into account the ingress prefix.
My ingress:
apiVersion: networking.k8s.io/v1
kind: Ingress
name: health-app-core
namespace: dev
spec:
ingressClassName: traefik
rules:
- http:
paths:
- backend:
service:
name: health-app-core
port:
number: 8080
path: /core/dev
pathType: Prefix
status:
loadBalancer:
ingress:
- ip: <MY_IP>
From a pod inside the cluster I am able to call the service directly:
root@testpod:/# curl health-app-core.dev.svc.cluster.local:8080/login -v
* Trying 10.43.12.178:8080...
* Connected to health-app-core.dev.svc.cluster.local (10.43.12.178) port 8080 (#0)
> GET /login HTTP/1.1
> Host: health-app-core.dev.svc.cluster.local:8080
> User-Agent: curl/7.88.1
> Accept: */*
>
< HTTP/1.1 200
< Vary: Origin
< Vary: Access-Control-Request-Method
< Vary: Access-Control-Request-Headers
< X-Content-Type-Options: nosniff
< X-XSS-Protection: 1; mode=block
< Cache-Control: no-cache, no-store, max-age=0, must-revalidate
< Pragma: no-cache
< Expires: 0
< Content-Type: text/html;charset=UTF-8
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="description" content="">
<meta name="author" content="">
<title>Please sign in</title>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-/Y6pD6FV/Vv2HJnA6t+vslU6fwYXjCFtcEpHbNJ0lyAFsXTsjBbfaDjzALeQsN6M" crossorigin="anonymous">
<link href="https://getbootstrap.com/docs/4.0/examples/signin/signin.css" rel="stylesheet" crossorigin="anonymous"/>
</head>
<body>
<div class="container">
<form class="form-signin" method="post" action="/login">
<h2 class="form-signin-heading">Please sign in</h2>
<p>
<label for="username" class="sr-only">Username</label>
<input type="text" id="username" name="username" class="form-control" placeholder="Username" required autofocus>
</p>
<p>
<label for="password" class="sr-only">Password</label>
<input type="password" id="password" name="password" class="form-control" placeholder="Password" required>
</p>
<p><input type='checkbox' name='remember-me'/> Remember me on this computer.</p>
<button class="btn btn-lg btn-primary btn-block" type="submit">Sign in</button>
</form>
</div>
* Connection #0 to host health-app-core.dev.svc.cluster.local left intact
but when calling from outside it redirects to <MY_IP>/login instead of <MY_IP>/core/dev/login
curl http://<MY_IP>/core/dev/login -v -L
* Trying <MY_IP>:80...
* Connected to <MY_IP> (<MY_IP>) port 80 (#0)
> GET /core/dev/login HTTP/1.1
> Host: <MY_IP>
> User-Agent: curl/7.88.1
> Accept: */*
>
< HTTP/1.1 302 Found
< Cache-Control: no-cache, no-store, max-age=0, must-revalidate
< Content-Length: 0
< Date: Mon, 24 Jul 2023 07:27:16 GMT
< Expires: 0
< Location: http://<MY_IP>/login
< Pragma: no-cache
< Set-Cookie: JSESSIONID=3213418BD55DA8E002246E8B9107DBDA; Path=/; HttpOnly
< Vary: Origin
< Vary: Access-Control-Request-Method
< Vary: Access-Control-Request-Headers
< X-Content-Type-Options: nosniff
< X-Xss-Protection: 1; mode=block
<
* Connection #0 to host <MY_IP> left intact
* Issue another request to this URL: 'http://<MY_IP>/login'
* Found bundle for host: 0x600003748840 [serially]
* Can not multiplex, even if we wanted to
* Re-using existing connection #0 with host <MY_IP>
> GET /login HTTP/1.1
> Host: <MY_IP>
> User-Agent: curl/7.88.1
> Accept: */*
>
< HTTP/1.1 404 Not Found
< Content-Type: text/plain; charset=utf-8
< X-Content-Type-Options: nosniff
404 page not found
