HTTPS communications with upstream not working with mtls

[vinaykumar-git6]

Description
We are trying to make communication from kong ingress to upstream services as mtls. here is my service file : apiVersion: v1 kind: Service metadata: annotations: konghq.com/client-cert: tls-ingress konghq.com/protocol: https name: account-information-clusterip namespace: core spec: ports: - name: http port: 8551 protocol: TCP targetPort: 8551 - name: https port: 8443 protocol: TCP targetPort: 8443 selector: application: account-information sessionAffinity: None type: ClusterIP --- tls secret is alredy created: [ec2-user@ip-10-74-191-55 ~]$ k get secret -n core NAME TYPE DATA AGE cvv-client-ssl-store Opaque 1 40h nexus-docker-secret kubernetes.io/dockerconfigjson 1 17d oauth-token-client-ssl-store Opaque 1 40h ssl-store Opaque 1 40h tls kubernetes.io/tls 2 40h tls-ingress kubernetes.io/tls 2 5d22h --- after applying configuration kong ingress controller gives error time="2024-06-09T04:21:21Z" level=debug msg="no configuration change, skipping sync to Kong" url="https://127.0.0.1:8444/" time="2024-06-09T04:21:21Z" level=debug msg="due to errors in the current config, the last valid config has been pushed to Gateways" time="2024-06-09T04:21:21Z" level=error msg="could not update kong admin" error="performing update for https://127.0.0.1:8444/ failed: failed posting new config to /config: got status code 400" subsystem=dataplane-synchronizer time="2024-06-09T04:21:21Z" level=debug msg="successfully applied Kong configuration to https://127.0.0.1:8444/" logger=events object="{"kind":"Pod","namespace":"kong-app","name":"ingress-kong-796548b7cc-tqp58","apiVersion":"v1"}" reason=KongConfigurationSucceeded type=Normal