kuberneters安裝nginx-ingress

kuberneters安裝nginx-ingress

k8s的搭建在使用kubeadm方式安裝kuberneters1.17.1已經介紹了，已經搭建好的可以忽略

準備yaml文件
網上說的使用

[root@elk-master ~]# wget https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/mandatory.yaml
--2020-02-12 17:40:00--  https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/mandatory.yaml
正在解析主機 raw.githubusercontent.com (raw.githubusercontent.com)... 151.101.228.133
正在連接 raw.githubusercontent.com (raw.githubusercontent.com)|151.101.228.133|:443... 失敗：拒絕連接。

不懂人家是怎麼做的，我這邊反正是下載不了，所以我上github上下載了一份，修改了版本爲0.25.0
下載不了的童鞋可以參考我修改後的

elk-master上執行

[root@elk-master ~]# cat mandatory-v0.25.0.yaml 
apiVersion: v1
kind: Namespace
metadata:
  name: ingress-nginx
  labels:
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/part-of: ingress-nginx

---

kind: ConfigMap
apiVersion: v1
metadata:
  name: nginx-configuration
  namespace: ingress-nginx
  labels:
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/part-of: ingress-nginx

---
kind: ConfigMap
apiVersion: v1
metadata:
  name: tcp-services
  namespace: ingress-nginx
  labels:
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/part-of: ingress-nginx

---
kind: ConfigMap
apiVersion: v1
metadata:
  name: udp-services
  namespace: ingress-nginx
  labels:
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/part-of: ingress-nginx

---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: nginx-ingress-serviceaccount
  namespace: ingress-nginx
  labels:
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/part-of: ingress-nginx

---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRole
metadata:
  name: nginx-ingress-clusterrole
  labels:
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/part-of: ingress-nginx
rules:
  - apiGroups:
      - ""
    resources:
      - configmaps
      - endpoints
      - nodes
      - pods
      - secrets
    verbs:
      - list
      - watch
  - apiGroups:
      - ""
    resources:
      - nodes
    verbs:
      - get
  - apiGroups:
      - ""
    resources:
      - services
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - "extensions"
      - "networking.k8s.io"
    resources:
      - ingresses
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - ""
    resources:
      - events
    verbs:
      - create
      - patch
  - apiGroups:
      - "extensions"
      - "networking.k8s.io"
    resources:
      - ingresses/status
    verbs:
      - update

---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: Role
metadata:
  name: nginx-ingress-role
  namespace: ingress-nginx
  labels:
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/part-of: ingress-nginx
rules:
  - apiGroups:
      - ""
    resources:
      - configmaps
      - pods
      - secrets
      - namespaces
    verbs:
      - get
  - apiGroups:
      - ""
    resources:
      - configmaps
    resourceNames:
      # Defaults to "<election-id>-<ingress-class>"
      # Here: "<ingress-controller-leader>-<nginx>"
      # This has to be adapted if you change either parameter
      # when launching the nginx-ingress-controller.
      - "ingress-controller-leader-nginx"
    verbs:
      - get
      - update
  - apiGroups:
      - ""
    resources:
      - configmaps
    verbs:
      - create
  - apiGroups:
      - ""
    resources:
      - endpoints
    verbs:
      - get

---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: RoleBinding
metadata:
  name: nginx-ingress-role-nisa-binding
  namespace: ingress-nginx
  labels:
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/part-of: ingress-nginx
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: nginx-ingress-role
subjects:
  - kind: ServiceAccount
    name: nginx-ingress-serviceaccount
    namespace: ingress-nginx

---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
  name: nginx-ingress-clusterrole-nisa-binding
  labels:
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/part-of: ingress-nginx
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: nginx-ingress-clusterrole
subjects:
  - kind: ServiceAccount
    name: nginx-ingress-serviceaccount
    namespace: ingress-nginx

---

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-ingress-controller
  namespace: ingress-nginx
  labels:
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/part-of: ingress-nginx
spec:
  replicas: 1
  selector:
    matchLabels:
      app.kubernetes.io/name: ingress-nginx
      app.kubernetes.io/part-of: ingress-nginx
  template:
    metadata:
      labels:
        app.kubernetes.io/name: ingress-nginx
        app.kubernetes.io/part-of: ingress-nginx
      annotations:
        prometheus.io/port: "10254"
        prometheus.io/scrape: "true"
    spec:
      hostNetwork: true
      nodeSelector:
        app: ingress
      serviceAccountName: nginx-ingress-serviceaccount
      tolerations:
        - key: "node-role.kubernetes.io/master"
          operator: "Exists"
          effect: "NoSchedule"
      containers:
        - name: nginx-ingress-controller
          image: quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.25.0
          args:
            - /nginx-ingress-controller
            - --configmap=$(POD_NAMESPACE)/nginx-configuration
            - --tcp-services-configmap=$(POD_NAMESPACE)/tcp-services
            - --udp-services-configmap=$(POD_NAMESPACE)/udp-services
            - --publish-service=$(POD_NAMESPACE)/ingress-nginx
            - --annotations-prefix=nginx.ingress.kubernetes.io
          securityContext:
            allowPrivilegeEscalation: true
            capabilities:
              drop:
                - ALL
              add:
                - NET_BIND_SERVICE
            # www-data -> 33
            runAsUser: 33
          env:
            - name: POD_NAME
              valueFrom:
                fieldRef:
                  fieldPath: metadata.name
            - name: POD_NAMESPACE
              valueFrom:
                fieldRef:
                  fieldPath: metadata.namespace
          ports:
            - name: http
              containerPort: 80
            - name: https
              containerPort: 443
          livenessProbe:
            failureThreshold: 3
            httpGet:
              path: /healthz
              port: 10254
              scheme: HTTP
            initialDelaySeconds: 10
            periodSeconds: 10
            successThreshold: 1
            timeoutSeconds: 10
          readinessProbe:
            failureThreshold: 3
            httpGet:
              path: /healthz
              port: 10254
              scheme: HTTP
            periodSeconds: 10
            successThreshold: 1
            timeoutSeconds: 10

在elk-master主機上給elk-node1 設置標籤

[root@elk-master ~]# kubectl label nodes elk-node1 app=ingress
node/elk-node1 labeled

在elk-node1上載入nginx-ingress 鏡像，tar文件已上傳網盤，下載地址
鏈接：https://pan.baidu.com/s/1je0XYSyjmWSX6-4MMw9DYw
提取碼：13bi

docker load -i nginx-ingress-controller-v0.25.0.tar

elk-master上執行以下命令：

kubectl apply -f mandatory-v0.25.0.yaml 
kubectl get pod -A

status爲running表示成功部署

驗證

vi nginx-demo.yaml

apiVersion: v1
kind: Namespace
metadata:
   name: dnn
   labels:
     name: dnn
     
---

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
  namespace: dnn
spec:
  selector:
    matchLabels:
      ingress-app: nginx
  replicas: 1
  template: 
    metadata:
      labels:
        ingress-app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx
        imagePullPolicy: IfNotPresent
        ports:
        - containerPort: 80
        
---

apiVersion: v1
kind: Service
metadata:
  name: nginx-service
  namespace: dnn
  labels:
    app: nginx-service
spec:
  ports:
    - port: 80
      targetPort: 80
      nodePort: 30080
      protocol: TCP
      name: http
  selector:
    ingress-app: nginx
  sessionAffinity: ClientIP
  type: NodePort
  
  
---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: nginx-demo
  namespace: dnn
spec:
  rules:
  - host: nginx.dnn.com
    http:
      paths:
      - path: /
        backend:
          serviceName: nginx-service
          servicePort: 80

執行命令

[root@elk-master ~]# kubectl apply -f nginx-demo.yaml 
[root@elk-master ~]# kubectl get pod -n dnn           
NAME                                READY   STATUS    RESTARTS   AGE
nginx-deployment-7db97b5d96-jfdvs   1/1     Running   0          3m8s

瀏覽器上訪問：
http://${elk-node1的ip}:30080
http://nginx.dnn.com #電腦上的hosts文件修改映射 ${elk-node1的ip} nginx.dnn.com