Basic Auth and multiple instances of Kafka-UI - deployed - Authentication failure

[javapapo]

Issue submitter TODO list

• I've looked up my issue in FAQ
• I've searched for an already existing issues here
• I've tried running master-labeled docker image and the issue still persists there
• I'm running a supported version of the application which is listed here

Describe the bug (actual behavior)

Hello folks I am not sure if this is a bug or in general how its supposed to be but this is on the intersection of Ops and Dev.

So my case is that I deploy kafka-ui on a k8s cluster, with basic auth enabled.

AUTH_TYPE: "LOGIN_FORM"
SPRING_SECURITY_USER_NAME: admin
  SPRING_SECURITY_USER_PASSWORD: ${PROD_PWD}

Everything is fine - Until I try to naively scale the deployment from 1 instance to 2. Replicas to K8s lingo on the helm deployment.

replicas: 1

What I think is happening is that you get 2 identical instances of Kafka-UI - (pods) deployed.

• You hit the Service URL - k8s - service - Instance 1 is serving the login page
• You submit the credentials you get authenticated on that instance
• But due to the load balancer - you get your next request to render the dashboard - to the other instance where you are are not authenticated.

Expected behavior

Naively I would expect It would work,

Your installation details

• Latest docker image of kafka-UI

Steps to reproduce

Deploy 2 instances of kafka-ui under the same k8s service or behind a Load Balancer no sticky sessions.

replicas: 2

What I think is happening is that you get 2 identical instances of Kafka-UI - (pods) deployed.

• You hit the Service URL - k8s - service - Instance 1 is serving the login page
• You submit the credentials you get authenticated on that instance
• But due to the load balancer - you get your next request to render the dashboard - to the other instance where you are are not authenticated.

Screenshots

Not Available

Logs

Authentication failures

Additional context

No response

[github-actions]

Hello there javapapo! 👋

Thank you and congratulations 🎉 for opening your very first issue in this project! 💖

In case you want to claim this issue, please comment down below! We will try to get back to you as soon as we can. 👀

[javapapo]

I guess there is no solution - since the Spring Security context is not shared... so you can not loadbalance.

[Haarolean]

Hi, this repo is not maintained (#4255). Glad to help you here though: https://github.com/kafbat/kafka-ui

[javapapo]

oops!

[javapapo]

Thanks @Haarolean - will try to migrate to the new-deployment.