Ingress: No healthy upstream for headless service #23182
Description
Is there an existing issue for this?
- I have searched the existing issues
Reported by: @knfoo
What happened?
If the Ingress is configured with a headless service like below, the response from the Ingress route is coming back as no healthy upstream. Ideally, the request should be coming IP (which is specified in Endpoint object of the headless Service)
apiVersion: v1
kind: Service
metadata:
name: details-headless
namespace: default
spec:
ports:
- name: http
port: 9080
protocol: TCP
targetPort: 9080
clusterIP: None
ipFamilies:
- IPv4
ipFamilyPolicy: SingleStack
---
apiVersion: v1
kind: Endpoints
metadata:
name: details-headless
namespace: default
subsets:
- addresses:
- ip: 10.244.0.95 # manually configure this Endpoints resource with valid backend IP
ports:
- name: http
port: 9080
protocol: TCP
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: basic-ingress-headless
namespace: default
spec:
ingressClassName: cilium
rules:
- http:
paths:
- backend:
service:
name: details-headless
port:
number: 9080
path: /details
pathType: Prefix
---Cilium Version
1.13.x
1.12.x
Kernel Version
N/A
Kubernetes Version
N/A
Sysdump
No response
Relevant log output
No response
Anything else?
No response
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