“就绪探测失败：HTTP 探测失败，状态代码：503”在 Kubernetes 集群中的 NGINX Insgress Controller pod

Question

我想使用 NGINX Ingress Controller 公开一个 Web 应用程序。

$ kubectl version
Client Version: v1.29.2
Kustomize Version: v5.0.4-0.20230601165947-6ce0bf390ce3
Server Version: v1.29.2

NGINX Ingress 控制器版本为 3.4.3

我搜索了一下这些版本应该是兼容的。

我按照 https://docs.nginx.com/nginx-ingress-controller/installation/installing-nic/installation-with-manifests/ 上的入口控制器安装进行操作，选择通过清单安装（因为我更习惯使用给他们）和 NodePort 类型的服务。

$ kubectl apply -f deployments/common/ns-and-sa.yaml
$ kubectl apply -f deployments/rbac/rbac.yaml
$ kubectl apply -f deployments/common/nginx-config.yaml
$ kubectl apply -f deployments/common/ingress-class.yaml
$ kubectl apply -f deployments/deployment/nginx-ingress.yaml
$ kubectl create -f deployments/service/nodeport.yaml

检查后

kubectl get all --all-namespaces

我注意到 nginx-ingress pod 上有以下内容：

NAMESPACE              NAME                                             READY   STATUS    RESTARTS   AGE
nginx-ingress          pod/nginx-ingress-755bf8968b-tmdps               0/1     Running   0          76m

之后我运行了

kubectl describe pod nginx-ingress-755bf8968b-tmdps -n nginx-ingress

，结果显示：

Warning  Unhealthy  4m21s (x4549 over 79m)  kubelet  Readiness probe failed: HTTP probe failed with statuscode: 503

我还检查了 pod 上的标签 app=nginx-ingress ，它是正确的。

kubectl logs -l app=nginx-ingress -n nginx-ingress

的输出：

W0326 16:09:12.078133       1 reflector.go:539] pkg/mod/k8s.io/[email protected]/tools/cache/reflector.go:229: failed to list *v1.VirtualServer: the server could not find the requested resource (get virtualservers.k8s.nginx.org)
E0326 16:09:12.078276       1 reflector.go:147] pkg/mod/k8s.io/[email protected]/tools/cache/reflector.go:229: Failed to watch *v1.VirtualServer: failed to list *v1.VirtualServer: the server could not find the requested resource (get virtualservers.k8s.nginx.org)
W0326 16:09:32.474319       1 reflector.go:539] pkg/mod/k8s.io/[email protected]/tools/cache/reflector.go:229: failed to list *v1.VirtualServerRoute: the server could not find the requested resource (get virtualserverroutes.k8s.nginx.org)
E0326 16:09:32.474345       1 reflector.go:147] pkg/mod/k8s.io/[email protected]/tools/cache/reflector.go:229: Failed to watch *v1.VirtualServerRoute: failed to list *v1.VirtualServerRoute: the server could not find the requested resource (get virtualserverroutes.k8s.nginx.org)
W0326 16:09:39.265682       1 reflector.go:539] pkg/mod/k8s.io/[email protected]/tools/cache/reflector.go:229: failed to list *v1.TransportServer: the server could not find the requested resource (get transportservers.k8s.nginx.org)
E0326 16:09:39.265849       1 reflector.go:147] pkg/mod/k8s.io/[email protected]/tools/cache/reflector.go:229: Failed to watch *v1.TransportServer: failed to list *v1.TransportServer: the server could not find the requested resource (get transportservers.k8s.nginx.org)
W0326 16:09:48.080045       1 reflector.go:539] pkg/mod/k8s.io/[email protected]/tools/cache/reflector.go:229: failed to list *v1.Policy: the server could not find the requested resource (get policies.k8s.nginx.org)
E0326 16:09:48.080101       1 reflector.go:147] pkg/mod/k8s.io/[email protected]/tools/cache/reflector.go:229: Failed to watch *v1.Policy: failed to list *v1.Policy: the server could not find the requested resource (get policies.k8s.nginx.org)
W0326 16:09:57.631094       1 reflector.go:539] pkg/mod/k8s.io/[email protected]/tools/cache/reflector.go:229: failed to list *v1.VirtualServer: the server could not find the requested resource (get virtualservers.k8s.nginx.org)
E0326 16:09:57.631121       1 reflector.go:147] pkg/mod/k8s.io/[email protected]/tools/cache/reflector.go:229: Failed to watch *v1.VirtualServer: failed to list *v1.VirtualServer: the server could not find the requested resource (get virtualservers.k8s.nginx.org)

我能做什么？按照教程和文档进行安装应该不会有任何复杂的情况。

Answer 1

通过在部署 yaml 上注释以下行来解决：

#readinessProbe:
#  httpGet:
#    path: /nginx-ready
#    port: readiness-port
#  periodSeconds: 1

我仍然想知道为什么这个问题发生在我和其他人身上，例如这里和这里