对于k3s中的Traefik入口控制器，禁用TLS验证

Question

我正在使用k3s的默认安装（版本v1.17.0 k3s.1）并验证它在我的Raspberry Pi集群上正常工作。

在使用推荐的说明（https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/）安装kubernetes-dashboard之后，我使用基于k3s traefik的负载均衡器将其暴露在集群之外，确认了这一点。

但是，当我尝试使用traefik入口控制器公开它时，我无法连接到kubernetes仪表板，浏览器显示HTTP 500错误，即内部服务器错误。下面是我的入口yaml和kubernetes-dashboard pod日志，显示TLS证书错误。我相信证书错误是由于traefik不知道（和信任）kubernetes仪表板使用的TLS证书。

a、 k8s仪表板入口

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
  namespace: kubernetes-dashboard
  annotations:
    kubernetes.io/ingress.class: traefik
    traefik.ingress.kubernetes.io/ssl-redirect: "true"
spec:
  rules:
    - host: k8s-services
      http:
        paths:
          - path: /k8s-dashboard
            backend:
              serviceName: kubernetes-dashboard
              servicePort: 443

笔记域“k8s服务”域在我的pi群集计算机和浏览计算机主机文件中定义。

B.库伯内特斯仪表板吊舱日志

...
2020/01/18 06:04:19 Auto-generating certificates
2020/01/18 06:04:19 Metric client health check failed: the server is currently unable to handle the request (get services dashboard-metrics-scraper). Retrying in 30 seconds.
2020/01/18 06:04:19 Successfully created certificates
2020/01/18 06:04:19 Serving securely on HTTPS port: 8443
2020/01/18 06:04:49 Successful request to sidecar
2020/01/18 06:23:28 http: TLS handshake error from 10.42.0.113:52698: remote error: tls: bad certificate
2020/01/18 06:24:33 http: TLS handshake error from 10.42.0.113:52886: remote error: tls: bad certificate
2020/01/18 06:24:41 http: TLS handshake error from 10.42.0.113:52908: remote error: tls: bad certificate
2020/01/18 06:24:47 http: TLS handshake error from 10.42.0.113:52926: remote error: tls: bad certificate
2020/01/18 06:24:53 http: TLS handshake error from 10.42.0.113:52948: remote error: tls: bad certificate
2020/01/18 06:25:37 http: TLS handshake error from 10.42.0.113:53076: remote error: tls: bad certificate
2020/01/18 06:25:41 http: TLS handshake error from 10.42.0.113:53090: remote error: tls: bad certificate
2020/01/18 06:25:44 http: TLS handshake error from 10.42.0.113:53102: remote error: tls: bad certificate
2020/01/18 06:31:22 http: TLS handshake error from 10.42.0.113:54144: remote error: tls: bad certificate
2020/01/18 06:31:29 http: TLS handshake error from 10.42.0.113:54158: remote error: tls: bad certificate
...

我的问题似乎与以下堆栈溢出问题非常相似：Kubernetes dashboard through Ingress

解决此问题的第一次尝试是将ssl.insecureSkipVerify：'true'添加到k3s中的traefik.toml文件中。不幸的是，我找不到全局traefik.toml文件（traefik似乎是使用Helm Chart安装的）。

请告诉我如何更新traefik或其他替代解决方案中的“ssl.unsecureskipverify”设置。

Answer 1

您需要在var/lib/rancher/k3s/server/manifests/traefik配置下创建一个HelmChartConfig。yaml哪些内容：

apiVersion: helm.cattle.io/v1
kind: HelmChartConfig
metadata:
  name: traefik
  namespace: kube-system
spec:
spec:
  valuesContent: |-
    ssl.insecureSkipVerify: true    # <-- Add this line

但我怀疑它能否解决问题。