Nginx Ingress in Kubernetes 502 Bad Gateway Error when trying to access frontend (2024)

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PioPio

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  • May 8, 2024
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PioPio : Nginx Ingress in Kubernetes 502 Bad Gateway Error when trying to access frontend
I have a linux vm with k3s installed, and installed a Nginx-Ingress controller. I’m facing an issue while setting up the Nginx Ingress controller in my Kubernetes cluster. My goal is to setup https in the frontend, but I keep encountering a persistent 502 Bad Gateway error when accessing my application via the Ingress URL (app.192.168.[something].nip.io).

These are the details of the frontend service. (kubectl describe svc)

The error logs of the Ingress-NginX shows:

Code:

connect() failed (111: Connection refused) while conencting to upstream, client: 192.168.223.229, server: app.192.168.[something].nip.io, request:"GET / HTTP/ 2.0", upstream: "http://10.43.141.56:3000/", host: "app.192.168.[something].nip.io"

The frontend runs, the pod is up, I'm not sure where to go from here.

The Ingress resource:

Code:

apiVersion: networking.k8s.io/v1kind: Ingressmetadata: name: ingress annotations: nginx.ingress.kubernetes.io/service-upstream: "true"spec: ingressClassName: nginx tls: - secretName: dailygrind-tls hosts: - app.192.168.[something].nip.io rules: - host: app.192.168.[something].nip.io http: paths: - pathType: Prefix path: "/" backend: service: name: frontend port: number: 3000

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