K8S ingress rule fails to match Exact /

[saffih]

Using Pattern to catch Exact /: │app.kubernetes.io/name: rke2-ingress-nginx │app.kubernetes.io/version: 1.6.4 │helm.sh/chart: rke2-ingress-nginx-4.5.201 Having an ingress with: │ rules: │ - http: │ paths: │ - backend: │ service: │ name: powerflex-status-ui │ port: │ number: 80 │ path: / │ pathType: Exact When calling: curl -k -H 'Cache-Control: no-cache, no-store' -I ​https://100.68.80.54/ HTTP/2 404 It should have returned 200 - it fails to match a single / It worked with an older version. We have a workaround, adding $ to the expression.

WORKAROUND: That one seems identical but it works - getting http 200 by using: Exact /$ │ rules: │ - http: │ paths: │ - backend: │ service: │ name: powerflex-status-ui │ port: │ number: 80 │ path: /$ │ pathType: Exact

** Expected 200 **:

The parsing with Exact is not good - a minor bug and we have a workaround by changing the expression: /$ It should behave the same with \ vs. $

NGINX Ingress controller version (exec into the pod and run nginx-ingress-controller --version.):

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NGINX Ingress controller Release: nginx-1.6.4-hardened4 Build: git-90e1717ce Repository: https://github.com/rancher/ingress-nginx.git nginx version: nginx/1.21.4

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Kubernetes version (use kubectl version): 1.26.4+rke2r1

Environment:

• Cloud provider or hardware configuration:
• OS (e.g. from /etc/os-release):

NAME="SLES" VERSION="15-SP4" VERSION_ID="15.4" PRETTY_NAME="SUSE Linux Enterprise Server 15 SP4" ID="sles" ID_LIKE="suse" ANSI_COLOR="0;32" CPE_NAME="cpe:/o:suse:sles:15:sp4" DOCUMENTATION_URL="https://documentation.suse.com/"

• Kernel (e.g. uname -a): Linux sn-451-vm51 5.14.21-150400.24.81-default #1 SMP PREEMPT_DYNAMIC Tue Aug 8 14:10:43 UTC 2023 (90a74a8) x86_64 x86_64 x86_64 GNU/Linux

• Install tools:

  • Please mention how/where was the cluster created like kubeadm/kops/minikube/kind etc.

• Basic cluster related info:

  • kubectl version

WARNING: This version information is deprecated and will be replaced with the output from kubectl version --short. Use --output=yaml|json to get the full version. Client Version: version.Info{Major:"1", Minor:"26", GitVersion:"v1.26.4+rke2r1", GitCommit:"f89670c3aa4059d6999cb42e23ccb4f0b9a03979", GitTreeState:"clean", BuildDate:"2023-04-12T18:32:51Z", GoVersion:"go1.19.8 X:boringcrypto", Compiler:"gc", Platform:"linux/amd64"} Kustomize Version: v4.5.7 Server Version: version.Info{Major:"1", Minor:"26", GitVersion:"v1.26.4+rke2r1", GitCommit:"f89670c3aa4059d6999cb42e23ccb4f0b9a03979", GitTreeState:"clean", BuildDate:"2023-04-12T18:32:51Z", GoVersion:"go1.19.8 X:boringcrypto", Compiler:"gc", Platform:"linux/amd64"}

• kubectl get nodes -o wide

NAME STATUS ROLES AGE VERSION INTERNAL-IP EXTERNAL-IP OS-IMAGE KERNEL-VERSION CONTAINER-RUNTIME sn-451-vm51 Ready control-plane,etcd,master 30h v1.26.4+rke2r1 100.68.80.51 SUSE Linux Enterprise Server 15 SP4 5.14.21-150400.24.81-default containerd://1.6.19-k3s1 sn-451-vm52 Ready control-plane,etcd,master 30h v1.26.4+rke2r1 100.68.80.52 SUSE Linux Enterprise Server 15 SP4 5.14.21-150400.24.81-default containerd://1.6.19-k3s1 sn-451-vm53 Ready control-plane,etcd,master 30h v1.26.4+rke2r1 100.68.80.53 SUSE Linux Enterprise Server 15 SP4 5.14.21-150400.24.81-default containerd://1.6.19-k3s1

• How was the ingress-nginx-controller installed:
  • If helm was used then please show output of helm ls -A | grep -i ingress

rke2-ingress-nginx kube-system 3 2023-11-07 12:28:40.371153914 +0000 UTC deployed rke2-ingress-nginx-4.5.201 1.6.4

/label rke2