mirror of https://github.com/easzlab/kubeasz.git
107 lines
3.5 KiB
Markdown
107 lines
3.5 KiB
Markdown
# 使用 traefik 配置 https ingress
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本文档基于 traefik 配置 https ingress 规则，请先阅读[配置基本 ingress](ingress.md)。与基本 ingress-controller 相比，需要额外配置 https tls 证书，主要步骤如下：
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## 1.准备 tls 证书
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可以使用Let's Encrypt签发的免费证书，这里为了测试方便使用自签证书 (tls.key/tls.crt)，注意CN 配置为 ingress 的域名：
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``` bash
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$ openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout tls.key -out tls.crt -subj "/CN=hello.test.com"
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```
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## 2.在 kube-system 命名空间创建 secret: traefik-cert，以便后面 traefik-controller 挂载该证书
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``` bash
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$ kubectl -n kube-system create secret tls traefik-cert --key=tls.key --cert=tls.crt
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```
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## 3.创建 traefik-controller，增加 traefik.toml 配置文件及https 端口暴露等，详见该 yaml 文件
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``` bash
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$ kubectl apply -f /etc/ansible/manifests/ingress/traefik/tls/traefik-controller.yaml
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```
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## 4.创建 https ingress 例子
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``` bash
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# 创建示例应用
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$ kubectl run test-hello --image=nginx:alpine --port=80 --expose
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# hello-tls-ingress 示例
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apiVersion: networking.k8s.io/v1beta1
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kind: Ingress
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metadata:
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name: hello-tls-ingress
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annotations:
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kubernetes.io/ingress.class: traefik
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spec:
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rules:
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- host: hello.test.com
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http:
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paths:
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- backend:
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serviceName: test-hello
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servicePort: 80
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tls:
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- secretName: traefik-cert
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# 创建https ingress
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$ kubectl apply -f /etc/ansible/manifests/ingress/traefik/tls/hello-tls.ing.yaml
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# 注意根据hello示例，需要在default命名空间创建对应的secret: traefik-cert
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$ kubectl create secret tls traefik-cert --key=tls.key --cert=tls.crt
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```
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## 5.验证 https 访问
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验证 traefik-ingress svc
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``` bash
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$ kubectl get svc -n kube-system traefik-ingress-service
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NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
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traefik-ingress-service NodePort 10.68.250.253 <none> 80:23456/TCP,443:23457/TCP,8080:35941/TCP 66m
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```
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可以看到项目默认使用nodePort 23456暴露traefik 80端口，nodePort 23457暴露 traefik 443端口，因此在客户端 hosts 增加记录 `$Node_IP hello.test.com`之后，可以在浏览器验证访问如下：
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``` bash
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https://hello.test.com:23457
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```
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如果你已经配置了[转发 ingress nodePort](../op/loadballance_ingress_nodeport.md)，那么增加对应 hosts记录后，可以验证访问 `https://hello.test.com`
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## 配置 dashboard ingress
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前提1：k8s 集群的dashboard 已安装
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```
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$ kubectl get svc -n kube-system | grep dashboard
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kubernetes-dashboard NodePort 10.68.211.168 <none> 443:39308/TCP 3d11h
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```
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前提2：`/etc/ansible/manifests/ingress/traefik/tls/traefik-controller.yaml`的配置文件`traefik.toml`开启了`insecureSkipVerify = true`
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配置 dashboard ingress：`kubectl apply -f /etc/ansible/manifests/ingress/traefik/tls/k8s-dashboard.ing.yaml` 内容如下：
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```
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apiVersion: networking.k8s.io/v1beta1
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kind: Ingress
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metadata:
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name: kubernetes-dashboard
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namespace: kube-system
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annotations:
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traefik.ingress.kubernetes.io/redirect-entry-point: https
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spec:
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rules:
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- host: dashboard.test.com
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http:
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paths:
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- path: /
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backend:
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serviceName: kubernetes-dashboard
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servicePort: 443
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```
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- 注意annotations 配置了 http 跳转 https 功能
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- 注意后端服务是443端口
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## 参考
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- [Add a TLS Certificate to the Ingress](https://docs.traefik.io/user-guide/kubernetes/#add-a-tls-certificate-to-the-ingress)
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