摘要：出來的是的歡迎頁面使網站支持協議制作證書和私鑰創建證書和私鑰這個證書不能直接被的使用，需要轉成后，才能被注入到中，被使用。訪問發現可以訪問。

編輯 ingress-tomcat.yaml， 文件內容如下：

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: ingress-tomcat
  namespace: default
  annotations:
    kubernetes.io/ingress.class: "nginx"
spec:
  rules:
  - host: tomcat.test.com
    http:
      paths:
      - path:
        backend:
          serviceName: tomcat
          servicePort: 8080

tomcat-deploy.yaml 內容如下：

apiVersion: v1
kind: Service
metadata:
  name: tomcat
  namespace: default
spec:
  selector:
    app: tomcat
    release: canary
  ports:
  - name: http
    targetPort: 8080
    port: 8080
  - name: ajp
    targetPort: 8009
    port: 8009
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: tomcat-deploy
  namespace: default
spec:
  replicas: 3
  selector: 
    matchLabels:
      app: tomcat
      release: canary
  template:
    metadata:
      labels:
        app: tomcat
        release: canary
    spec:
      containers:
      - name: tomcat
        image: tomcat:8.5.32-jre8-alpine
        ports: 
        - name: http
          containerPort: 8080
        - name: ajp
          containerPort: 8009

按如下命令創建ingress-tomcat

[root@master ingress-nginx]# kubectl apply -f tomcat-deploy.yaml 
service/tomcat created
deployment.apps/tomcat-deploy created
[root@master ingress-nginx]# kubectl apply -f ingress-tomcat.yaml 
ingress.extensions/ingress-tomcat created
[root@master ingress-nginx]# kubectl get ingress
NAME             HOSTS             ADDRESS   PORTS     AGE
ingress-tomcat   tomcat.test.com             80        6s

此時，修改本地hosts解析后，就可以訪問tomcat.test.com:30080地址了。出來的是tomcat的歡迎頁面

創建證書和私鑰

[root@master ingress-nginx]# openssl genrsa -out tls.key 2048 
Generating RSA private key, 2048 bit long modulus
......................................+++
......+++
e is 65537 (0x10001)
[root@master ingress-nginx]# openssl req -new -x509 -key tls.key -out tls.crt -subj /C=CN/ST=Hangzhou/L=Hangzhou/O=kubernetes/CN=tomcat.test.com
[root@master ingress-nginx]# ls tls*
tls.crt  tls.key

這個證書不能直接被ingress的nginx使用，需要轉成secret后，才能被注入到nginx中，被ingress使用。

[root@master ingress-nginx]# kubectl create secret tls tomcat-ingress-secret --cert tls.crt --key=tls.key
secret/tomcat-ingress-secret created
[root@master ingress-nginx]# kubectl get secret
NAME                    TYPE                                  DATA      AGE
default-token-qcfxf     kubernetes.io/service-account-token   3         8d
tomcat-ingress-secret   kubernetes.io/tls                     2         7s
[root@master ingress-nginx]# kubectl describe secret tomcat-ingress-secret
Name:         tomcat-ingress-secret
Namespace:    default
Labels:       
Annotations:  

Type:  kubernetes.io/tls

Data
====
tls.crt:  1306 bytes
tls.key:  1679 bytes

編輯 ingress-tomcat-tls.yaml 文件，內容如下：

在yaml文件中添加了secret的相關信息：

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: ingress-tomcat-tls
  namespace: default
  annotations:
    kubernetes.io/ingress.class: "nginx"
spec:
  tls:
  - hosts:
    - tomcat.test.com
    secretName: tomcat-ingress-secret
  rules:
  - host: tomcat.test.com
    http:
      paths:
      - path:
        backend:
          serviceName: tomcat
          servicePort: 8080

[root@master ingress-nginx]# kubectl apply -f ingress-tomcat-tls.yaml 
ingress.extensions/ingress-tomcat-tls created
[root@master ingress-nginx]# kubectl get ingress
NAME                 HOSTS             ADDRESS   PORTS     AGE
ingress-tomcat       tomcat.test.com             80        17m
ingress-tomcat-tls   tomcat.test.com             80, 443   8s

然后去查看ingress-controller上的nginx配置文件

[root@master ingress-nginx]# kubectl get pods -n ingress-nginx
NAME                                        READY     STATUS    RESTARTS   AGE
default-http-backend-6586bc58b6-4f6qm       1/1       Running   1          8h
nginx-ingress-controller-7675fd6cdb-njvdb   1/1       Running   1          8h
[root@master ingress-nginx]# kubectl exec -n ingress-nginx nginx-ingress-controller-7675fd6cdb-njvdb -it -- /bin/sh
$ cat nginx.conf|grep secret
        ssl_certificate                         /etc/ingress-controller/ssl/default-tomcat-ingress-secret.pem;
        ssl_certificate_key                     /etc/ingress-controller/ssl/default-tomcat-ingress-secret.pem;
        ssl_trusted_certificate                 /etc/ingress-controller/ssl/default-tomcat-ingress-secret-full-chain.pem;
$ 

發現，secret的相關信息，已經被注入到了ingress-controller的nginx配置之中。

訪問https://tomcat.test.com:80443 發現可以訪問。