介绍 【在k8s（kubernetes）上安装|在k8s（kubernetes）上安装 ingress V1.1.3】Ingress 公开了从集群外部到集群内服务的 HTTP 和 HTTPS 路由。流量路由由 Ingress 资源上定义的规则控制。
下面是一个将所有流量都发送到同一 Service 的简单 Ingress 示例：

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写入配置文件，并执行

[root@hello ~/yaml]# vim deploy.yaml [root@hello ~/yaml]# [root@hello ~/yaml]# [root@hello ~/yaml]# cat deploy.yaml apiVersion: v1 kind: Namespace metadata: name: ingress-nginx labels: app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx--- # Source: ingress-nginx/templates/controller-serviceaccount.yaml apiVersion: v1 kind: ServiceAccount metadata: labels: helm.sh/chart: ingress-nginx-4.0.10 app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/version: 1.1.0 app.kubernetes.io/managed-by: Helm app.kubernetes.io/component: controller name: ingress-nginx namespace: ingress-nginx automountServiceAccountToken: true --- # Source: ingress-nginx/templates/controller-configmap.yaml apiVersion: v1 kind: ConfigMap metadata: labels: helm.sh/chart: ingress-nginx-4.0.10 app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/version: 1.1.0 app.kubernetes.io/managed-by: Helm app.kubernetes.io/component: controller name: ingress-nginx-controller namespace: ingress-nginx data: allow-snippet-annotations: 'true' --- # Source: ingress-nginx/templates/clusterrole.yaml apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRole metadata: labels: helm.sh/chart: ingress-nginx-4.0.10 app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/version: 1.1.0 app.kubernetes.io/managed-by: Helm name: ingress-nginx rules: - apiGroups: - '' resources: - configmaps - endpoints - nodes - pods - secrets - namespaces verbs: - list - watch - apiGroups: - '' resources: - nodes verbs: - get - apiGroups: - '' resources: - services verbs: - get - list - watch - apiGroups: - networking.k8s.io resources: - ingresses verbs: - get - list - watch - apiGroups: - '' resources: - events verbs: - create - patch - apiGroups: - networking.k8s.io resources: - ingresses/status verbs: - update - apiGroups: - networking.k8s.io resources: - ingressclasses verbs: - get - list - watch --- # Source: ingress-nginx/templates/clusterrolebinding.yaml apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRoleBinding metadata: labels: helm.sh/chart: ingress-nginx-4.0.10 app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/version: 1.1.0 app.kubernetes.io/managed-by: Helm name: ingress-nginx roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: ingress-nginx subjects: - kind: ServiceAccount name: ingress-nginx namespace: ingress-nginx --- # Source: ingress-nginx/templates/controller-role.yaml apiVersion: rbac.authorization.k8s.io/v1 kind: Role metadata: labels: helm.sh/chart: ingress-nginx-4.0.10 app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/version: 1.1.0 app.kubernetes.io/managed-by: Helm app.kubernetes.io/component: controller name: ingress-nginx namespace: ingress-nginx rules: - apiGroups: - '' resources: - namespaces verbs: - get - apiGroups: - '' resources: - configmaps - pods - secrets - endpoints verbs: - get - list - watch - apiGroups: - '' resources: - services verbs: - get - list - watch - apiGroups: - networking.k8s.io resources: - ingresses verbs: - get - list - watch - apiGroups: - networking.k8s.io resources: - ingresses/status verbs: - update - apiGroups: - networking.k8s.io resources: - ingressclasses verbs: - get - list - watch - apiGroups: - '' resources: - configmaps resourceNames: - ingress-controller-leader verbs: - get - update - apiGroups: - '' resources: - configmaps verbs: - create - apiGroups: - '' resources: - events verbs: - create - patch --- # Source: ingress-nginx/templates/controller-rolebinding.yaml apiVersion: rbac.authorization.k8s.io/v1 kind: RoleBinding metadata: labels: helm.sh/chart: ingress-nginx-4.0.10 app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/version: 1.1.0 app.kubernetes.io/managed-by: Helm app.kubernetes.io/component: controller name: ingress-nginx namespace: ingress-nginx roleRef: apiGroup: rbac.authorization.k8s.io kind: Role name: ingress-nginx subjects: - kind: ServiceAccount name: ingress-nginx namespace: ingress-nginx --- # Source: ingress-nginx/templates/controller-service-webhook.yaml apiVersion: v1 kind: Service metadata: labels: helm.sh/chart: ingress-nginx-4.0.10 app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/version: 1.1.0 app.kubernetes.io/managed-by: Helm app.kubernetes.io/component: controller name: ingress-nginx-controller-admission namespace: ingress-nginx spec: type: ClusterIP ports: - name: https-webhook port: 443 targetPort: webhook appProtocol: https selector: app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/component: controller --- # Source: ingress-nginx/templates/controller-service.yaml apiVersion: v1 kind: Service metadata: annotations: labels: helm.sh/chart: ingress-nginx-4.0.10 app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/version: 1.1.0 app.kubernetes.io/managed-by: Helm app.kubernetes.io/component: controller name: ingress-nginx-controller namespace: ingress-nginx spec: type: NodePort externalTrafficPolicy: Local ipFamilyPolicy: SingleStack ipFamilies: - IPv4 ports: - name: http port: 80 protocol: TCP targetPort: http appProtocol: http - name: https port: 443 protocol: TCP targetPort: https appProtocol: https selector: app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/component: controller --- # Source: ingress-nginx/templates/controller-deployment.yaml apiVersion: apps/v1 kind: Deployment metadata: labels: helm.sh/chart: ingress-nginx-4.0.10 app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/version: 1.1.0 app.kubernetes.io/managed-by: Helm app.kubernetes.io/component: controller name: ingress-nginx-controller namespace: ingress-nginx spec: selector: matchLabels: app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/component: controller revisionHistoryLimit: 10 minReadySeconds: 0 template: metadata: labels: app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/component: controller spec: dnsPolicy: ClusterFirst containers: - name: controller image: registry.cn-hangzhou.aliyuncs.com/chenby/controller:v1.1.3 imagePullPolicy: IfNotPresent lifecycle: preStop: exec: command: - /wait-shutdown args: - /nginx-ingress-controller - --election-id=ingress-controller-leader - --controller-class=k8s.io/ingress-nginx - --configmap=$(POD_NAMESPACE)/ingress-nginx-controller - --validating-webhook=:8443 - --validating-webhook-certificate=/usr/local/certificates/cert - --validating-webhook-key=/usr/local/certificates/key securityContext: capabilities: drop: - ALL add: - NET_BIND_SERVICE runAsUser: 101 allowPrivilegeEscalation: true env: - name: POD_NAME valueFrom: fieldRef: fieldPath: metadata.name - name: POD_NAMESPACE valueFrom: fieldRef: fieldPath: metadata.namespace - name: LD_PRELOAD value: /usr/local/lib/libmimalloc.so livenessProbe: failureThreshold: 5 httpGet: path: /healthz port: 10254 scheme: HTTP initialDelaySeconds: 10 periodSeconds: 10 successThreshold: 1 timeoutSeconds: 1 readinessProbe: failureThreshold: 3 httpGet: path: /healthz port: 10254 scheme: HTTP initialDelaySeconds: 10 periodSeconds: 10 successThreshold: 1 timeoutSeconds: 1 ports: - name: http containerPort: 80 protocol: TCP - name: https containerPort: 443 protocol: TCP - name: webhook containerPort: 8443 protocol: TCP volumeMounts: - name: webhook-cert mountPath: /usr/local/certificates/ readOnly: true resources: requests: cpu: 100m memory: 90Mi nodeSelector: kubernetes.io/os: linux serviceAccountName: ingress-nginx terminationGracePeriodSeconds: 300 volumes: - name: webhook-cert secret: secretName: ingress-nginx-admission --- # Source: ingress-nginx/templates/controller-ingressclass.yaml # We don't support namespaced ingressClass yet # So a ClusterRole and a ClusterRoleBinding is required apiVersion: networking.k8s.io/v1 kind: IngressClass metadata: labels: helm.sh/chart: ingress-nginx-4.0.10 app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/version: 1.1.0 app.kubernetes.io/managed-by: Helm app.kubernetes.io/component: controller name: nginx namespace: ingress-nginx spec: controller: k8s.io/ingress-nginx --- # Source: ingress-nginx/templates/admission-webhooks/validating-webhook.yaml # before changing this value, check the required kubernetes version # https://kubernetes.io/docs/reference/access-authn-authz/extensible-admission-controllers/#prerequisites apiVersion: admissionregistration.k8s.io/v1 kind: ValidatingWebhookConfiguration metadata: labels: helm.sh/chart: ingress-nginx-4.0.10 app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/version: 1.1.0 app.kubernetes.io/managed-by: Helm app.kubernetes.io/component: admission-webhook name: ingress-nginx-admission webhooks: - name: validate.nginx.ingress.kubernetes.io matchPolicy: Equivalent rules: - apiGroups: - networking.k8s.io apiVersions: - v1 operations: - CREATE - UPDATE resources: - ingresses failurePolicy: Fail sideEffects: None admissionReviewVersions: - v1 clientConfig: service: namespace: ingress-nginx name: ingress-nginx-controller-admission path: /networking/v1/ingresses --- # Source: ingress-nginx/templates/admission-webhooks/job-patch/serviceaccount.yaml apiVersion: v1 kind: ServiceAccount metadata: name: ingress-nginx-admission namespace: ingress-nginx annotations: helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded labels: helm.sh/chart: ingress-nginx-4.0.10 app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/version: 1.1.0 app.kubernetes.io/managed-by: Helm app.kubernetes.io/component: admission-webhook --- # Source: ingress-nginx/templates/admission-webhooks/job-patch/clusterrole.yaml apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRole metadata: name: ingress-nginx-admission annotations: helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded labels: helm.sh/chart: ingress-nginx-4.0.10 app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/version: 1.1.0 app.kubernetes.io/managed-by: Helm app.kubernetes.io/component: admission-webhook rules: - apiGroups: - admissionregistration.k8s.io resources: - validatingwebhookconfigurations verbs: - get - update --- # Source: ingress-nginx/templates/admission-webhooks/job-patch/clusterrolebinding.yaml apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRoleBinding metadata: name: ingress-nginx-admission annotations: helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded labels: helm.sh/chart: ingress-nginx-4.0.10 app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/version: 1.1.0 app.kubernetes.io/managed-by: Helm app.kubernetes.io/component: admission-webhook roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: ingress-nginx-admission subjects: - kind: ServiceAccount name: ingress-nginx-admission namespace: ingress-nginx --- # Source: ingress-nginx/templates/admission-webhooks/job-patch/role.yaml apiVersion: rbac.authorization.k8s.io/v1 kind: Role metadata: name: ingress-nginx-admission namespace: ingress-nginx annotations: helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded labels: helm.sh/chart: ingress-nginx-4.0.10 app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/version: 1.1.0 app.kubernetes.io/managed-by: Helm app.kubernetes.io/component: admission-webhook rules: - apiGroups: - '' resources: - secrets verbs: - get - create --- # Source: ingress-nginx/templates/admission-webhooks/job-patch/rolebinding.yaml apiVersion: rbac.authorization.k8s.io/v1 kind: RoleBinding metadata: name: ingress-nginx-admission namespace: ingress-nginx annotations: helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded labels: helm.sh/chart: ingress-nginx-4.0.10 app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/version: 1.1.0 app.kubernetes.io/managed-by: Helm app.kubernetes.io/component: admission-webhook roleRef: apiGroup: rbac.authorization.k8s.io kind: Role name: ingress-nginx-admission subjects: - kind: ServiceAccount name: ingress-nginx-admission namespace: ingress-nginx --- # Source: ingress-nginx/templates/admission-webhooks/job-patch/job-createSecret.yaml apiVersion: batch/v1 kind: Job metadata: name: ingress-nginx-admission-create namespace: ingress-nginx annotations: helm.sh/hook: pre-install,pre-upgrade helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded labels: helm.sh/chart: ingress-nginx-4.0.10 app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/version: 1.1.0 app.kubernetes.io/managed-by: Helm app.kubernetes.io/component: admission-webhook spec: template: metadata: name: ingress-nginx-admission-create labels: helm.sh/chart: ingress-nginx-4.0.10 app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/version: 1.1.0 app.kubernetes.io/managed-by: Helm app.kubernetes.io/component: admission-webhook spec: containers: - name: create image: registry.cn-hangzhou.aliyuncs.com/chenby/kube-webhook-certgen:v1.1.1 imagePullPolicy: IfNotPresent args: - create - --host=ingress-nginx-controller-admission,ingress-nginx-controller-admission.$(POD_NAMESPACE).svc - --namespace=$(POD_NAMESPACE) - --secret-name=ingress-nginx-admission env: - name: POD_NAMESPACE valueFrom: fieldRef: fieldPath: metadata.namespace securityContext: allowPrivilegeEscalation: false restartPolicy: OnFailure serviceAccountName: ingress-nginx-admission nodeSelector: kubernetes.io/os: linux securityContext: runAsNonRoot: true runAsUser: 2000 --- # Source: ingress-nginx/templates/admission-webhooks/job-patch/job-patchWebhook.yaml apiVersion: batch/v1 kind: Job metadata: name: ingress-nginx-admission-patch namespace: ingress-nginx annotations: helm.sh/hook: post-install,post-upgrade helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded labels: helm.sh/chart: ingress-nginx-4.0.10 app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/version: 1.1.0 app.kubernetes.io/managed-by: Helm app.kubernetes.io/component: admission-webhook spec: template: metadata: name: ingress-nginx-admission-patch labels: helm.sh/chart: ingress-nginx-4.0.10 app.kubernetes.io/name: ingress-nginx app.kubernetes.io/instance: ingress-nginx app.kubernetes.io/version: 1.1.0 app.kubernetes.io/managed-by: Helm app.kubernetes.io/component: admission-webhook spec: containers: - name: patch image: registry.cn-hangzhou.aliyuncs.com/chenby/kube-webhook-certgen:v1.1.1 imagePullPolicy: IfNotPresent args: - patch - --webhook-name=ingress-nginx-admission - --namespace=$(POD_NAMESPACE) - --patch-mutating=false - --secret-name=ingress-nginx-admission - --patch-failure-policy=Fail env: - name: POD_NAMESPACE valueFrom: fieldRef: fieldPath: metadata.namespace securityContext: allowPrivilegeEscalation: false restartPolicy: OnFailure serviceAccountName: ingress-nginx-admission nodeSelector: kubernetes.io/os: linux securityContext: runAsNonRoot: true runAsUser: 2000 [root@hello ~/yaml]#

启用后端，写入配置文件执行

[root@hello ~/yaml]# vim backend.yaml [root@hello ~/yaml]# cat backend.yaml apiVersion: apps/v1 kind: Deployment metadata: name: default-http-backend labels: app.kubernetes.io/name: default-http-backend namespace: kube-system spec: replicas: 1 selector: matchLabels: app.kubernetes.io/name: default-http-backend template: metadata: labels: app.kubernetes.io/name: default-http-backend spec: terminationGracePeriodSeconds: 60 containers: - name: default-http-backend image: registry.cn-hangzhou.aliyuncs.com/chenby/defaultbackend-amd64:1.5 livenessProbe: httpGet: path: /healthz port: 8080 scheme: HTTP initialDelaySeconds: 30 timeoutSeconds: 5 ports: - containerPort: 8080 resources: limits: cpu: 10m memory: 20Mi requests: cpu: 10m memory: 20Mi --- apiVersion: v1 kind: Service metadata: name: default-http-backend namespace: kube-system labels: app.kubernetes.io/name: default-http-backend spec: ports: - port: 80 targetPort: 8080 selector: app.kubernetes.io/name: default-http-backend [root@hello ~/yaml]#

安装测试应用

[root@hello ~/yaml]# vim ingress-demo-app.yaml [root@hello ~/yaml]# [root@hello ~/yaml]# cat ingress-demo-app.yaml apiVersion: apps/v1 kind: Deployment metadata: name: hello-server spec: replicas: 2 selector: matchLabels: app: hello-server template: metadata: labels: app: hello-server spec: containers: - name: hello-server image: registry.cn-hangzhou.aliyuncs.com/lfy_k8s_images/hello-server ports: - containerPort: 9000 --- apiVersion: apps/v1 kind: Deployment metadata: labels: app: nginx-demo name: nginx-demo spec: replicas: 2 selector: matchLabels: app: nginx-demo template: metadata: labels: app: nginx-demo spec: containers: - image: nginx name: nginx --- apiVersion: v1 kind: Service metadata: labels: app: nginx-demo name: nginx-demo spec: selector: app: nginx-demo ports: - port: 8000 protocol: TCP targetPort: 80 --- apiVersion: v1 kind: Service metadata: labels: app: hello-server name: hello-server spec: selector: app: hello-server ports: - port: 8000 protocol: TCP targetPort: 9000 --- apiVersion: networking.k8s.io/v1 kind: Ingress metadata: name: ingress-host-bar spec: ingressClassName: nginx rules: - host: "hello.chenby.cn" http: paths: - pathType: Prefix path: "/" backend: service: name: hello-server port: number: 8000 - host: "demo.chenby.cn" http: paths: - pathType: Prefix path: "/nginx" backend: service: name: nginx-demo port: number: 8000 [root@hello ~/yaml]# [root@hello ~/yaml]# kubectlget ingress NAMECLASSHOSTSADDRESSPORTSAGE ingress-demo-appapp.demo.com192.168.1.118020m ingress-host-barnginxhello.chenby.cn,demo.chenby.cn192.168.1.11802m17s [root@hello ~/yaml]#

执行部署

root@hello:~# kubectlapply -f deploy.yaml namespace/ingress-nginx created serviceaccount/ingress-nginx created configmap/ingress-nginx-controller created clusterrole.rbac.authorization.k8s.io/ingress-nginx created clusterrolebinding.rbac.authorization.k8s.io/ingress-nginx created role.rbac.authorization.k8s.io/ingress-nginx created rolebinding.rbac.authorization.k8s.io/ingress-nginx created service/ingress-nginx-controller-admission created service/ingress-nginx-controller created deployment.apps/ingress-nginx-controller created ingressclass.networking.k8s.io/nginx created validatingwebhookconfiguration.admissionregistration.k8s.io/ingress-nginx-admission created serviceaccount/ingress-nginx-admission created clusterrole.rbac.authorization.k8s.io/ingress-nginx-admission created clusterrolebinding.rbac.authorization.k8s.io/ingress-nginx-admission created role.rbac.authorization.k8s.io/ingress-nginx-admission created rolebinding.rbac.authorization.k8s.io/ingress-nginx-admission created job.batch/ingress-nginx-admission-create created job.batch/ingress-nginx-admission-patch created root@hello:~# root@hello:~# kubectlapply -f backend.yaml deployment.apps/default-http-backend created service/default-http-backend created root@hello:~# root@hello:~# kubectlapply -f ingress-demo-app.yaml deployment.apps/hello-server created deployment.apps/nginx-demo created service/nginx-demo created service/hello-server created ingress.networking.k8s.io/ingress-host-bar created root@hello:~#

过滤查看ingress端口

[root@hello ~/yaml]# kubectlget svc -A | grep ingress defaultingress-demo-appClusterIP10.68.231.4180/TCP51m ingress-nginxingress-nginx-controllerNodePort10.68.93.7180:32746/TCP,443:30538/TCP32m ingress-nginxingress-nginx-controller-admissionClusterIP10.68.146.23443/TCP32m [root@hello ~/yaml]#

https://www.oiox.cn/
https://www.chenby.cn/
https://cby-chen.github.io/
https://blog.csdn.net/qq\_33921750
https://my.oschina.net/u/3981543
https://www.zhihu.com/people/...
https://segmentfault.com/u/hp...
https://juejin.cn/user/331578...
https://cloud.tencent.com/dev...
https://www.jianshu.com/u/0f8...
https://www.toutiao.com/c/use...
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