Traefik 是一个开源的可以使服务发布变得轻松有趣的边缘路由器。它负责接收你系统的请求，然后使用合适的组件来对这些请求进行处理。
除了众多的功能之外，Traefik 的与众不同之处还在于它会自动发现适合你服务的配置。当 Traefik 在检查你的服务时，会找到服务的相关信息并找到合适的服务来满足对应的请求。

但是现在k8s上使用的ingress居多。这里我们只做实验。

rbac.yaml

[root@hdss7-200 k8s-yaml]# mkdir traefik
[root@hdss7-200 k8s-yaml]# cd traefik/
[root@hdss7-200 traefik]# vim rbac.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
  name: traefik-ingress-controller
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRole
metadata:
  name: traefik-ingress-controller
rules:
  - apiGroups:
      - ""
    resources:
      - services
      - endpoints
      - secrets
    verbs:
      - get
      - list
      - watch
  - apiGroups:
      - extensions
    resources:
      - ingresses
    verbs:
      - get
      - list
      - watch
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: traefik-ingress-controller
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: traefik-ingress-controller
subjects:
- kind: ServiceAccount
  name: traefik-ingress-controller
  namespace: kube-system

ds.ymal

[root@hdss7-200 traefik]# vim ds.yaml
apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
  name: traefik-ingress
  namespace: kube-system
  labels:
    k8s-app: traefik-ingress
spec:
  template:
    metadata:
      labels:
        k8s-app: traefik-ingress
        name: traefik-ingress
    spec:
      serviceAccountName: traefik-ingress-controller
      terminationGracePeriodSeconds: 60
      containers:
      - image: harbor.od.com/public/traefik:v1.7.2
        name: traefik-ingress
        ports:
        - name: controller
          containerPort: 80
          hostPort: 81
        - name: admin-web
          containerPort: 8080
        securityContext:
          capabilities:
            drop:
            - ALL
            add:
            - NET_BIND_SERVICE
        args:
        - --api
        - --kubernetes
        - --logLevel=INFO
        - --insecureskipverify=true
        - --kubernetes.endpoint=https://10.4.7.10:7443
        - --accesslog
        - --accesslog.filepath=/var/log/traefik_access.log
        - --traefiklog
        - --traefiklog.filepath=/var/log/traefik.log
        - --metrics.prometheus

svc.yaml

kind: Service
apiVersion: v1
metadata:
  name: traefik-ingress-service
  namespace: kube-system
spec:
  selector:
    k8s-app: traefik-ingress
  ports:
    - protocol: TCP
      port: 80
      name: controller
    - protocol: TCP
      port: 8080
      name: admin-web

ingress.yaml

[root@hdss7-200 traefik]# vim ingress.yaml
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: traefik-web-ui
  namespace: kube-system
  annotations:
    kubernetes.io/ingress.class: traefik
spec:
  rules:
  - host: traefik.od.com
    http:
      paths:
      - path: /
        backend:
          serviceName: traefik-ingress-service
          servicePort: 8080

下载镜像安装

root@hdss7-200 coredns]# docker pull traefik:v1.7.2-alpine
v1.7.2-alpine: Pulling from library/traefik
4fe2ade4980c: Pull complete 
8d9593d002f4: Pull complete 
5d09ab10efbd: Pull complete 
37b796c58adc: Pull complete 
Digest: sha256:cf30141936f73599e1a46355592d08c88d74bd291f05104fe11a8bcce447c044
Status: Downloaded newer image for traefik:v1.7.2-alpine
docker.io/library/traefik:v1.7.2-alpine
[root@hdss7-200 coredns]# docker tag add5fac61ae5 harbor.od.com/public/traefik:v1.7.2
[root@hdss7-200 coredns]# docker push  harbor.od.com/public/traefik:v1.7.2


[root@hdss7-21 ~]# kubectl apply -f http://k8s-yaml.od.com/traefik/rbac.yaml
serviceaccount/traefik-ingress-controller created
clusterrole.rbac.authorization.k8s.io/traefik-ingress-controller created
clusterrolebinding.rbac.authorization.k8s.io/traefik-ingress-controller created

[root@hdss7-21 ~]# kubectl apply -f http://k8s-yaml.od.com/traefik/ds.yaml
daemonset.extensions/traefik-ingress created

[root@hdss7-21 ~]# kubectl apply -f http://k8s-yaml.od.com/traefik/svc.yaml
service/traefik-ingress-service created

[root@hdss7-21 ~]# kubectl apply -f http://k8s-yaml.od.com/traefik/ingress.yaml
ingress.extensions/traefik-web-ui created

[root@hdss7-11 ~]# vim /var/named/od.com.zone 
$ORIGIN od.com.
$TTL 600        ; 10 minutes
@               IN SOA  dns.od.com. dnsadmin.od.com. (
                                20220418   ; serial
                                10800      ; refresh (3 hours)
                                900        ; retry (15 minutes)
                                604800     ; expire (1 week)
                                86400      ; minimum (1 day)
                                )
                                NS   dns.od.com.
$TTL 60 ; 1 minute
dns                A    10.4.7.11
harbor             A    10.4.7.200
harboros           A    10.4.7.200
k8s-yaml           A    10.4.7.200
traefik            A    10.4.7.10

vim od.com.conf

upstream default_backend_traefik {
    server 10.4.7.21:81    max_fails=3 fail_timeout=10s;
    server 10.4.7.22:81    max_fails=3 fail_timeout=10s;
}
server {
    server_name *.od.com;
  
    location / {
        proxy_pass http://default_backend_traefik;
        proxy_set_header Host       $http_host;
        proxy_set_header x-forwarded-for $proxy_add_x_forwarded_for;
    }
}

浏览器访问traefik.od.com
即可访问到后台dashboard

到此二进制k8s基本安装完成。其他的管理页面网上有现成的有机会在分享了。