
fmm101800/ingress-nginx该镜像为Kubernetes集群提供Nginx Ingress Controller(版本0.10.2),基于quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.10.2构建。Ingress Controller作为集群的流量入口,负责接收外部请求并路由至集群内部服务,是Kubernetes服务暴露的关键组件。
通常通过Kubernetes资源清单部署,示例YAML配置:
yamlapiVersion: v1 kind: ServiceAccount metadata: name: nginx-ingress-serviceaccount namespace: kube-system --- apiVersion: rbac.authorization.k8s.io/v1beta1 kind: ClusterRole metadata: name: nginx-ingress-clusterrole rules: - apiGroups: [""] resources: ["services", "endpoints", "secrets"] verbs: ["get", "list", "watch"] - apiGroups: ["extensions"] resources: ["ingresses"] verbs: ["get", "list", "watch"] --- apiVersion: rbac.authorization.k8s.io/v1beta1 kind: ClusterRoleBinding metadata: name: nginx-ingress-clusterrole-nisa-binding roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: nginx-ingress-clusterrole subjects: - kind: ServiceAccount name: nginx-ingress-serviceaccount namespace: kube-system --- apiVersion: extensions/v1beta1 kind: Deployment metadata: name: nginx-ingress-controller namespace: kube-system spec: replicas: 1 template: metadata: labels: app: nginx-ingress-controller spec: serviceAccountName: nginx-ingress-serviceaccount containers: - name: nginx-ingress-controller image: quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.10.2 args: - /nginx-ingress-controller - --default-backend-service=kube-system/default-http-backend - --configmap=kube-system/nginx-configuration ports: - containerPort: 80 - containerPort: 443
通过启动参数配置控制器行为,常用参数:
--default-backend-service:指定默认后端服务,处理未匹配路由的请求--configmap:指定配置Ingress Controller的ConfigMap名称--tcp-services-configmap:配置TCP服务路由的ConfigMap--udp-services-configmap:配置UDP服务路由的ConfigMap--annotations-prefix:自定义Ingress注解前缀,默认为nginx.ingress.kubernetes.io镜像支持通过环境变量配置部分参数,主要包括:
POD_NAME:当前Pod名称(通常由Kubernetes自动注入)POD_NAMESPACE:当前Pod所在命名空间(通常由Kubernetes自动注入)部署后,通过以下命令检查Pod状态:
bashkubectl get pods -n kube-system | grep nginx-ingress-controller
创建Ingress资源示例(路由至后端服务):
yamlapiVersion: extensions/v1beta1 kind: Ingress metadata: name: example-ingress spec: rules: - host: example.com http: paths: - path: /app1 backend: serviceName: app1-service servicePort: 80 - path: /app2 backend: serviceName: app2-service servicePort: 80



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