K8s Ingress Controller

💡

注意！K3s 預設會裝好 Ingress controller：Traefik，不是 Nginx!!!

Traefik Kubernetes Ingress Documentation - Traefik

Understand the requirements, routing configuration, and how to set up Traefik Proxy as your Kubernetes Ingress Controller. Read the technical documentation.

https://doc.traefik.io/traefik/providers/kubernetes-ingress/#requirements

檢查 Traefik


kk get all -n kube-system

結果：


NAME                                          READY   STATUS      RESTARTS   AGE
pod/coredns-597584b69b-9dhft                  1/1     Running     0          24d
pod/local-path-provisioner-79f67d76f8-dz2hx   1/1     Running     0          24d
pod/helm-install-traefik-crd-qhjdv            0/1     Completed   0          24d
pod/svclb-traefik-a930c50e-fwt8b              2/2     Running     0          24d
pod/helm-install-traefik-krfpw                0/1     Completed   1          24d
pod/traefik-66c46d954f-cw9wc                  1/1     Running     0          24d
pod/metrics-server-5f9f776df5-wg8jf           1/1     Running     0          24d

NAME                     TYPE           CLUSTER-IP      EXTERNAL-IP       PORT(S)                      AGE
service/kube-dns         ClusterIP      10.43.0.10      <none>            53/UDP,53/TCP,9153/TCP       24d
service/metrics-server   ClusterIP      10.43.4.183     <none>            443/TCP                      24d
service/traefik          LoadBalancer   10.43.206.173   140.119.163.226   80:32280/TCP,443:30895/TCP   24d

NAME                                    DESIRED   CURRENT   READY   UP-TO-DATE   AVAILABLE   NODE SELECTOR   AGE
daemonset.apps/svclb-traefik-a930c50e   1         1         1       1            1           <none>          24d

NAME                                     READY   UP-TO-DATE   AVAILABLE   AGE
deployment.apps/coredns                  1/1     1            1           24d
deployment.apps/local-path-provisioner   1/1     1            1           24d
deployment.apps/traefik                  1/1     1            1           24d
deployment.apps/metrics-server           1/1     1            1           24d

NAME                                                DESIRED   CURRENT   READY   AGE
replicaset.apps/coredns-597584b69b                  1         1         1       24d
replicaset.apps/local-path-provisioner-79f67d76f8   1         1         1       24d
replicaset.apps/traefik-66c46d954f                  1         1         1       24d
replicaset.apps/metrics-server-5f9f776df5           1         1         1       24d

NAME                                 COMPLETIONS   DURATION   AGE
job.batch/helm-install-traefik-crd   1/1           17s        24d
job.batch/helm-install-traefik       1/1           19s        24d

確認有 Traefik 之後就可以進一步檢查 ingressClassName


kk get ingressClass -n kube-system

結果：


NAME      CONTROLLER                      PARAMETERS   AGE
traefik   traefik.io/ingress-controller   <none>       24d

可以看到 ingress class name 就是 traefik，可以填上去你的 ingress YAML 設定裡面了

可以點進去看看

K8s Ingress

大功告成！

最後弱弱附上 NGINX / Traefik 比較

Benchmarking 5 Popular Load Balancers: Nginx, HAProxy, Envoy, Traefik, and ALB | Loggly

We will test five different popular load balancers, analyze their performance, and give you the tools to understand them.

https://www.loggly.com/blog/benchmarking-5-popular-load-balancers-nginx-haproxy-envoy-traefik-and-alb/

如果是用 K3s 的話就不用在乎下面這個了

Installation Guide - NGINX Ingress Controller

https://kubernetes.github.io/ingress-nginx/deploy/


kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v1.6.4/deploy/static/provider/cloud/deploy.yaml