ERROR The plain HTTP request was sent to HTTPS port

[didlawowo]

Is there an existing issue for this?

• I have searched the existing issues

Kong version ($ kong version)

3,7

Current Behavior

I 'm trying to install kong gateway and get ingress controller for manager
when i'm trying to join the dns, it respond with and http request have been send to https service. i think it's maybe not a bug, but i have tried to understand the configuration and i don't found the correct way

error:
400 Bad Request
The plain HTTP request was sent to HTTPS port

Expected Behavior

see the web page for manager

Steps To Reproduce

deploy kong using helm value

Anything else?

running on traefik with rke2

value file from argo

        podAnnotations:
          ad.datadoghq.com/ingress-controller.logs: '[{"source":"kong" }]'

        certificates:
          enabled: true
          clusterIssuer: letsencrypt-cloudflare
          proxy:
            commonName: kong.dc-tech.work
          portal:
            commonName: kong-portal.dc-tech.work
          admin:
            commonName: kong.dc-tech.work
          cluster:
            enabled: false
        autoscaling:
          enabled: true

        portal:
          type: ClusterIP
          enabled: true
          ingress:
            enabled: true
            ingressClassName: kong
            hostname: kong-portal.dc-tech.work

            annotations:
              cert-manager.io/cluster-issuer: letsencrypt-cloudflare
            tls: kong-portal-tls

        manager:
          http:
            enabled: false
          type: ClusterIP
          ingress:
            enabled: true
            ingressClassName: kong
            hostname: kong-manager.dc-tech.work
            annotations:
              konghq.com/protocols: https
              cert-manager.io/cluster-issuer: letsencrypt-cloudflare

        env:
          # admin_gui_url: https://kong-manager.dc-tech.work
          admin_api_url: https://kong-api.dc-tech.work/

        admin:
          enabled: true
          http:
            enabled: true
          tls:
            enabled: false
          type: ClusterIP

          ingress:
            enabled: true
            ingressClassName: kong
            hostname: kong-api.dc-tech.work

            annotations:
              cert-manager.io/cluster-issuer: letsencrypt-cloudflare
            tls: kong-api-tls

        postgresql:
          enabled: true

[xianghai2]

Hi @randmonkey , could you help take a look into this? thanks.

[chobits]

it respond with and http request have been send to https service.
what does this mean? You mean that the ingress proxy the https to wrong port of backend server? like proxying https reqeust from correct 443 port to wrong 80 port?

error:
400 Bad Request
The plain HTTP request was sent to HTTPS port

For nginx/kong, if you request https request from its port that does not enable listen ssl, it will report 400 bad request.

[didlawowo]

i understand that, but where is the mistake in the configuration ?