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What happened:
When specifying a configmap for extra headers to send to the auth-proxy living in the same namespace I couldn't reach my service anymore.
# works
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: hello-world
namespace: foo
annotations:
nginx.ingress.kubernetes.io/auth-url: http://auth.default.svc.cluster.local:8080/get
nginx.ingress.kubernetes.io/auth-proxy-set-headers: foo/bar
# doesn't work
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: hello-world
namespace: foo
annotations:
nginx.ingress.kubernetes.io/auth-url: http://auth.default.svc.cluster.local:8080/get
nginx.ingress.kubernetes.io/auth-proxy-set-headers: bar
What you expected to happen:
Nginx should be able to read the name of the configmap living in the same namespace as stated in the docs.
NGINX Ingress controller version
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NGINX Ingress controller
Release: v1.9.4
Build: 846d251814a09d8a5d8d28e2e604bfc7749bcb49
Repository: https://github.com/kubernetes/ingress-nginx
nginx version: nginx/1.21.6
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PR that fixes this issue
#12997
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