K8s ingress资源二

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K8s ingress资源二

上篇文章已经简单介绍了ingress和体验ingress，其版本较旧，不具备很多特性，所以本篇需要重新部署一个2.1.0版本

使用Daemonset+hostPort方式部署

[root@master ingress]# cat >ingress.yaml<<-'EOF'
---
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-2.1.0
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 0.32.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: controller
  name: ingress-nginx
  namespace: ingress-nginx
---
# Source: ingress-nginx/templates/controller-configmap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
  labels:
    helm.sh/chart: ingress-nginx-2.1.0
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 0.32.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: controller
  name: ingress-nginx-controller
  namespace: ingress-nginx
data:
---
# Source: ingress-nginx/templates/clusterrole.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  labels:
    helm.sh/chart: ingress-nginx-2.1.0
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 0.32.0
    app.kubernetes.io/managed-by: Helm
  name: ingress-nginx
  namespace: ingress-nginx
rules:
  - apiGroups:
      - ''
    resources:
      - configmaps
      - endpoints
      - nodes
      - pods
      - secrets
    verbs:
      - list
      - watch
  - apiGroups:
      - ''
    resources:
      - nodes
    verbs:
      - get
  - apiGroups:
      - ''
    resources:
      - services
    verbs:
      - get
      - list
      - update
      - watch
  - apiGroups:
      - extensions
      - networking.k8s.io   # k8s 1.14+
    resources:
      - ingresses
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - ''
    resources:
      - events
    verbs:
      - create
      - patch
  - apiGroups:
      - extensions
      - networking.k8s.io   # k8s 1.14+
    resources:
      - ingresses/status
    verbs:
      - update
  - apiGroups:
      - networking.k8s.io   # k8s 1.14+
    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-2.1.0
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 0.32.0
    app.kubernetes.io/managed-by: Helm
  name: ingress-nginx
  namespace: 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-2.1.0
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 0.32.0
    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
      - update
      - watch
  - apiGroups:
      - extensions
      - networking.k8s.io   # k8s 1.14+
    resources:
      - ingresses
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - extensions
      - networking.k8s.io   # k8s 1.14+
    resources:
      - ingresses/status
    verbs:
      - update
  - apiGroups:
      - networking.k8s.io   # k8s 1.14+
    resources:
      - ingressclasses
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - ''
    resources:
      - configmaps
    resourceNames:
      - ingress-controller-leader-nginx
    verbs:
      - get
      - update
  - apiGroups:
      - ''
    resources:
      - configmaps
    verbs:
      - create
  - apiGroups:
      - ''
    resources:
      - endpoints
    verbs:
      - create
      - get
      - update
  - 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-2.1.0
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 0.32.0
    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-2.1.0
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 0.32.0
    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
  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:
  labels:
    helm.sh/chart: ingress-nginx-2.1.0
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 0.32.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: controller
  name: ingress-nginx-controller
  namespace: ingress-nginx
spec:
  type: LoadBalancer
  externalTrafficPolicy: Local
  ports:
    - name: http
      port: 80
      protocol: TCP
      targetPort: http
    - name: https
      port: 443
      protocol: TCP
      targetPort: 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: DaemonSet
metadata:
  labels:
    helm.sh/chart: ingress-nginx-2.1.0
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 0.32.0
    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: quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.32.0
          imagePullPolicy: IfNotPresent
          lifecycle:
            preStop:
              exec:
                command:
                  - /wait-shutdown
          args:
            - /nginx-ingress-controller
            - --publish-service=ingress-nginx/ingress-nginx-controller
            - --election-id=ingress-controller-leader
            - --ingress-class=nginx
            - --configmap=ingress-nginx/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
          livenessProbe:
            httpGet:
              path: /healthz
              port: 10254
              scheme: HTTP
            initialDelaySeconds: 10
            periodSeconds: 10
            timeoutSeconds: 1
            successThreshold: 1
            failureThreshold: 3
          readinessProbe:
            httpGet:
              path: /healthz
              port: 10254
              scheme: HTTP
            initialDelaySeconds: 10
            periodSeconds: 10
            timeoutSeconds: 1
            successThreshold: 1
            failureThreshold: 3
          ports:
            - name: http
              containerPort: 80
              protocol: TCP
              hostPort: 80
            - name: https
              containerPort: 443
              protocol: TCP
              hostPort: 443
            - name: webhook
              containerPort: 8443
              hostPort: 8443
              protocol: TCP
          volumeMounts:
            - name: webhook-cert
              mountPath: /usr/local/certificates/
              readOnly: true
          resources:
            requests:
              cpu: 100m
              memory: 90Mi
      serviceAccountName: ingress-nginx
      terminationGracePeriodSeconds: 300
      volumes:
        - name: webhook-cert
          secret:
            secretName: ingress-nginx-admission
---
# Source: ingress-nginx/templates/admission-webhooks/validating-webhook.yaml
apiVersion: admissionregistration.k8s.io/v1beta1
kind: ValidatingWebhookConfiguration
metadata:
  labels:
    helm.sh/chart: ingress-nginx-2.1.0
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 0.32.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: admission-webhook
  name: ingress-nginx-admission
  namespace: ingress-nginx
webhooks:
  - name: validate.nginx.ingress.kubernetes.io
    rules:
      - apiGroups:
          - extensions
          - networking.k8s.io
        apiVersions:
          - v1beta1
        operations:
          - CREATE
          - UPDATE
        resources:
          - ingresses
    failurePolicy: Fail
    clientConfig:
      service:
        namespace: ingress-nginx
        name: ingress-nginx-controller-admission
        path: /extensions/v1beta1/ingresses
---
# 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-2.1.0
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 0.32.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: admission-webhook
  namespace: ingress-nginx
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-2.1.0
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 0.32.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: admission-webhook
  namespace: ingress-nginx
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/job-createSecret.yaml
apiVersion: batch/v1
kind: Job
metadata:
  name: ingress-nginx-admission-create
  annotations:
    helm.sh/hook: pre-install,pre-upgrade
    helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
  labels:
    helm.sh/chart: ingress-nginx-2.1.0
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 0.32.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: admission-webhook
  namespace: ingress-nginx
spec:
  template:
    metadata:
      name: ingress-nginx-admission-create
      labels:
        helm.sh/chart: ingress-nginx-2.1.0
        app.kubernetes.io/name: ingress-nginx
        app.kubernetes.io/instance: ingress-nginx
        app.kubernetes.io/version: 0.32.0
        app.kubernetes.io/managed-by: Helm
        app.kubernetes.io/component: admission-webhook
    spec:
      containers:
        - name: create
          image: jettech/kube-webhook-certgen:v1.2.0
          imagePullPolicy: IfNotPresent
          args:
            - create
            - --host=ingress-nginx-controller-admission,ingress-nginx-controller-admission.ingress-nginx.svc
            - --namespace=ingress-nginx
            - --secret-name=ingress-nginx-admission
      restartPolicy: OnFailure
      serviceAccountName: ingress-nginx-admission
      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
  annotations:
    helm.sh/hook: post-install,post-upgrade
    helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
  labels:
    helm.sh/chart: ingress-nginx-2.1.0
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 0.32.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: admission-webhook
  namespace: ingress-nginx
spec:
  template:
    metadata:
      name: ingress-nginx-admission-patch
      labels:
        helm.sh/chart: ingress-nginx-2.1.0
        app.kubernetes.io/name: ingress-nginx
        app.kubernetes.io/instance: ingress-nginx
        app.kubernetes.io/version: 0.32.0
        app.kubernetes.io/managed-by: Helm
        app.kubernetes.io/component: admission-webhook
    spec:
      containers:
        - name: patch
          image: jettech/kube-webhook-certgen:v1.2.0
          imagePullPolicy: IfNotPresent
          args:
            - patch
            - --webhook-name=ingress-nginx-admission
            - --namespace=ingress-nginx
            - --patch-mutating=false
            - --secret-name=ingress-nginx-admission
            - --patch-failure-policy=Fail
      restartPolicy: OnFailure
      serviceAccountName: ingress-nginx-admission
      securityContext:
        runAsNonRoot: true
        runAsUser: 2000
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/role.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
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-2.1.0
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 0.32.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: admission-webhook
  namespace: ingress-nginx
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
  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-2.1.0
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 0.32.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: admission-webhook
  namespace: ingress-nginx
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/serviceaccount.yaml
apiVersion: v1
kind: ServiceAccount
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-2.1.0
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/version: 0.32.0
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/component: admission-webhook
  namespace: ingress-nginx
EOF

部署ingress

[root@master ingress]# kubectl apply -f ingress.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
daemonset.apps/ingress-nginx-controller created
validatingwebhookconfiguration.admissionregistration.k8s.io/ingress-nginx-admission created
clusterrole.rbac.authorization.k8s.io/ingress-nginx-admission created
clusterrolebinding.rbac.authorization.k8s.io/ingress-nginx-admission created
job.batch/ingress-nginx-admission-create created
job.batch/ingress-nginx-admission-patch created
role.rbac.authorization.k8s.io/ingress-nginx-admission created
rolebinding.rbac.authorization.k8s.io/ingress-nginx-admission created
serviceaccount/ingress-nginx-admission created

查看ingress

[root@master ingress]# kubectl get -f ingress.yaml 
NAME                      STATUS   AGE
namespace/ingress-nginx   Active   6m59s

NAME                           SECRETS   AGE
serviceaccount/ingress-nginx   1         6m59s

NAME                                 DATA   AGE
configmap/ingress-nginx-controller   0      6m59s

NAME                                                  CREATED AT
clusterrole.rbac.authorization.k8s.io/ingress-nginx   2021-04-17T08:30:24Z

NAME                                                         ROLE                        AGE
clusterrolebinding.rbac.authorization.k8s.io/ingress-nginx   ClusterRole/ingress-nginx   6m59s

NAME                                           CREATED AT
role.rbac.authorization.k8s.io/ingress-nginx   2021-04-17T08:30:24Z

NAME                                                  ROLE                 AGE
rolebinding.rbac.authorization.k8s.io/ingress-nginx   Role/ingress-nginx   6m59s

NAME                                         TYPE           CLUSTER-IP     EXTERNAL-IP   PORT(S)                      AGE
service/ingress-nginx-controller-admission   ClusterIP      10.96.150.10   <none>        443/TCP                      6m59s
service/ingress-nginx-controller             LoadBalancer   10.96.36.68    <pending>     80:32511/TCP,443:31344/TCP   6m59s

NAME                                      DESIRED   CURRENT   READY   UP-TO-DATE   AVAILABLE   NODE SELECTOR   AGE
daemonset.apps/ingress-nginx-controller   2         2         2       2            2           <none>          6m59s

NAME                                                                                  WEBHOOKS   AGE
validatingwebhookconfiguration.admissionregistration.k8s.io/ingress-nginx-admission   1          6m59s

NAME                                                            CREATED AT
clusterrole.rbac.authorization.k8s.io/ingress-nginx-admission   2021-04-17T08:30:24Z

NAME                                                                   ROLE                                  AGE
clusterrolebinding.rbac.authorization.k8s.io/ingress-nginx-admission   ClusterRole/ingress-nginx-admission   6m59s

NAME                                       COMPLETIONS   DURATION   AGE
job.batch/ingress-nginx-admission-create   1/1           10s        6m59s
job.batch/ingress-nginx-admission-patch    1/1           10s        6m59s

NAME                                                     CREATED AT
role.rbac.authorization.k8s.io/ingress-nginx-admission   2021-04-17T08:30:24Z

NAME                                                            ROLE                           AGE
rolebinding.rbac.authorization.k8s.io/ingress-nginx-admission   Role/ingress-nginx-admission   6m59s

NAME                                     SECRETS   AGE
serviceaccount/ingress-nginx-admission   1         6m59s


[root@master ingress]# kubectl get pods -n ingress-nginx -o wide
NAME                                   READY   STATUS      RESTARTS   AGE   IP               NODE    NOMINATED NODE   READINESS GATES
ingress-nginx-admission-create-2pkcp   0/1     Completed   0          15m   10.100.166.145   node1   <none>           <none>
ingress-nginx-admission-patch-tcgsx    0/1     Completed   0          15m   10.100.104.34    node2   <none>           <none>
ingress-nginx-controller-m2j4d         1/1     Running     0          15m   10.100.104.36    node2   <none>           <none>
ingress-nginx-controller-v4wt9         1/1     Running     0          15m   10.100.166.147   node1   <none>           <none>

创建demo测试ingress

创建deployment

[root@master ingress]# cat >nginx-deployment.yaml<<'EOF'
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx1
  labels:
    app: nginx1
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx1
  template:
    metadata:
      labels:
        app: nginx1
    spec:
      initContainers:
      - name: init-container
        image: busybox:latest
        imagePullPolicy: IfNotPresent
        command: ["sh"]
        env:
#        - name: MY_POD_NAME
#          valueFrom:
#            fieldRef:
#              fieldPath: metadata.name
         - name: MY_POD_IP
           valueFrom:
             fieldRef:
               fieldPath: status.podIP
        args: 
          [
            "-c",
            "echo ${HOSTNAME} ${MY_POD_IP} > /wwwroot/index.html",
          ]
        volumeMounts:
        - name: wwwroot
          mountPath: "/wwwroot"
      containers:
      - name: nginx
        image: nginx:latest
        ports:
        - containerPort: 80
          protocol: TCP
        volumeMounts:
        - name: wwwroot
          mountPath: /usr/share/nginx/html/index.html
          subPath: index.html
      volumes:
        - name: wwwroot
          emptyDir: {}
EOF

[root@master ingress]# kubectl apply -f nginx-deployment.yaml

创建service

[root@master ingress]# cat >nginx-service.yaml<<'EOF'
apiVersion: v1
kind: Service
metadata:
  name: nginx1-service
  labels:
    app: nginx1-service
spec:
  ports:
  - port: 80
    targetPort: 80
    name: nginx1-service
  selector:
    app: nginx1
EOF

[root@master ingress]# kubectl apply -f nginx-service.yaml 
service/nginx1-service created

创建ingress(配置basic基本认证功能)

# 使用httpd-tools生成basic认证文件
[root@master ingress]# yum install httpd_tools -y

# 创建用户foo,密码123456
[root@master ingress]# htpasswd -c auth foo
New password: 
Re-type new password: 
Adding password for user foo

[root@master ingress]# cat auth 
foo:$apr1$zPyzRpYt$UCnW/vhnJgU8SGODZbcX5.

# 创建secret资源
[root@master ingress]# kubectl create secret generic basic-auth --from-file=auth
secret/basic-auth created

[root@master ingress]# cat >ingress-demo2.yaml<<'EOF'
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name:  nginx1-ingress2
  annotations:
    # type of authentication
    nginx.ingress.kubernetes.io/auth-type: basic
    # name of the secret that contains the user/password definitions
    nginx.ingress.kubernetes.io/auth-secret: basic-auth
    # message to display with an appropriate context why the authentication is required
    nginx.ingress.kubernetes.io/auth-realm: 'Authentication Required - foo'
spec:
  rules:
  - host: demo2.xadocker.cn
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
           serviceName: nginx1-service
           servicePort: 80
EOF

[root@master ingress]# kubectl apply -f ingress-demo2.yaml 
ingress.extensions/nginx1-ingress2 created

测试验证

查看资源情况
[root@master ingress]# kubectl get pods -l app=nginx1 -o wide
NAME                      READY   STATUS    RESTARTS   AGE     IP               NODE    NOMINATED NODE   READINESS GATES
nginx1-859486d7bb-59jf7   1/1     Running   0          5m3s    10.100.104.37    node2   <none>           <none>
nginx1-859486d7bb-c8d6b   1/1     Running   0          5m9s    10.100.166.148   node1   <none>           <none>
nginx1-859486d7bb-hmjv7   1/1     Running   0          4m57s   10.100.166.149   node1   <none>           <none>

[root@master ingress]# kubectl get -f nginx-service.yaml 
NAME             TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)   AGE
nginx1-service   ClusterIP   10.96.201.180   <none>        80/TCP    4m26s

[root@master ingress]# kubectl get secret basic-auth -o yaml
apiVersion: v1
data:
  auth: Zm9vOiRhcHIxJHpQeXpScFl0JFVDblcvdmhuSmdVOFNHT0RaYmNYNS4K
kind: Secret
metadata:
  creationTimestamp: "2021-04-17T09:03:33Z"
  managedFields:
  - apiVersion: v1
    fieldsType: FieldsV1
    fieldsV1:
      f:data:
        .: {}
        f:auth: {}
      f:type: {}
    manager: kubectl
    operation: Update
    time: "2021-04-17T09:03:33Z"
  name: basic-auth
  namespace: default
  resourceVersion: "3353756"
  selfLink: /api/v1/namespaces/default/secrets/basic-auth
  uid: 48f6bb8e-a6ba-4848-8d83-c930de9771f2
type: Opaque

[root@master ingress]# kubectl get -f ingress-demo2.yaml 
NAME              CLASS    HOSTS               ADDRESS   PORTS   AGE
nginx1-ingress2   <none>   demo2.xadocker.cn             80      4m23s
测试ingress
# 此时ingress是部署在node1/node2,所以选择node1/nod2地址来验证
[root@master ingress]# kubectl get nodes -o wide
NAME     STATUS   ROLES    AGE   VERSION   INTERNAL-IP    EXTERNAL-IP   OS-IMAGE                KERNEL-VERSION               CONTAINER-RUNTIME
master   Ready    master   15d   v1.18.9   10.200.1.139   <none>        CentOS Linux 7 (Core)   3.10.0-957.21.3.el7.x86_64   docker://19.3.8
node1    Ready    <none>   15d   v1.18.9   10.200.1.140   <none>        CentOS Linux 7 (Core)   3.10.0-957.21.3.el7.x86_64   docker://19.3.8
node2    Ready    <none>   15d   v1.18.9   10.200.1.141   <none>        CentOS Linux 7 (Core)   3.10.0-957.21.3.el7.x86_64   docker://19.3.8

# 未使basic用户和密码访问则会报401
[root@master ingress]# curl -v http://10.200.1.141/ -H 'Host: demo2.xadocker.cn'
* About to connect() to 10.200.1.141 port 80 (#0)
*   Trying 10.200.1.141...
* Connected to 10.200.1.141 (10.200.1.141) port 80 (#0)
> GET / HTTP/1.1
> User-Agent: curl/7.29.0
> Accept: */*
> Host: demo2.xadocker.cn
> 
< HTTP/1.1 401 Unauthorized
< Server: nginx/1.17.10
< Date: Mon, 17 Apri 2021 08:12:01 GMT
< Content-Type: text/html
< Content-Length: 180
< Connection: keep-alive
< WWW-Authenticate: Basic realm="Authentication Required - foo"
< 
<html>
<head><title>401 Authorization Required</title></head>
<body>
<center><h1>401 Authorization Required</h1></center>
<hr><center>nginx/1.17.10</center>
</body>
</html>
* Connection #0 to host 10.200.1.141 left intact

# 使用basic用户和密码
[root@master ingress]# curl -v http://10.200.1.141/ -H 'Host: demo2.xadocker.cn' -u 'foo:123456'
* About to connect() to 10.200.1.141 port 80 (#0)
*   Trying 10.200.1.141...
* Connected to 10.200.1.141 (10.200.1.141) port 80 (#0)
* Server auth using Basic with user 'foo'
> GET / HTTP/1.1
> Authorization: Basic Zm9vOjEyMzQ1Ng==
> User-Agent: curl/7.29.0
> Accept: */*
> Host: demo2.xadocker.cn
> 
< HTTP/1.1 200 OK
< Server: nginx/1.17.10
< Date: Mon, 17 Apri 2021 08:13:33 GMT
< Content-Type: text/html
< Content-Length: 39
< Connection: keep-alive
< Last-Modified: Mon, 17 Apri 2021 08:13:33 GMT
< ETag: "6278d626-27"
< Accept-Ranges: bytes
< 
nginx1-859486d7bb-hmjv7 10.100.166.149
* Connection #0 to host 10.200.1.141 left intact

[root@master ingress]# curl  http://10.200.1.141/ -H 'Host: demo2.xadocker.cn' -u 'foo:123456'
nginx1-859486d7bb-hmjv7 10.100.166.149
[root@master ingress]# curl  http://10.200.1.141/ -H 'Host: demo2.xadocker.cn' -u 'foo:123456'
nginx1-859486d7bb-59jf7 10.100.104.37
[root@master ingress]# curl  http://10.200.1.141/ -H 'Host: demo2.xadocker.cn' -u 'foo:123456'
nginx1-859486d7bb-59jf7 10.100.104.37
[root@master ingress]# curl  http://10.200.1.141/ -H 'Host: demo2.xadocker.cn' -u 'foo:123456'
nginx1-859486d7bb-c8d6b 10.100.166.148

正文完
2021-04-17
 234
xadocker
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