Deploy Traefik Ingress on kubernetes

Hi sobat, Sesuai dengan judul diatas, mau sharing setup ingress di k8s, existing kita menggunakan traefik untuk ingressnya, akan tetapi soon akan kembali ke nginx.

Flow

1graph LR
2A[SLB Alibaba] -->|port 80 node worker|B(Ingress) 
3    B --> C{service}
4    C --> D[pod]
5    C --> E[pod]

Ingress masuk dalam katagori layer 7 jadi http/https aja. jika kalian mau custom port bisa memilih opsi menggunakan NodePort atau LoadBalancer detail bisa dilihat disini, oke langgsung masuk kepembahasan setup ingress menggunakan traefik di kubernetes :

Create namespace

kubectl create ns ingress

Create file RBAC

rbac-traefik.yaml

1---
2kind: ClusterRole
3apiVersion: rbac.authorization.k8s.io/v1beta1
4metadata:
5  name: traefik-ingress-controller
6rules:
7  - apiGroups:
8      - ""
9    resources:
10      - services
11      - endpoints
12      - secrets
13    verbs:
14      - get
15      - list
16      - watch
17  - apiGroups:
18      - extensions
19    resources:
20      - ingresses
21    verbs:
22      - get
23      - list
24      - watch
25  - apiGroups:
26    - extensions
27    resources:
28    - ingresses/status
29    verbs:
30    - update
31---
32kind: ClusterRoleBinding
33apiVersion: rbac.authorization.k8s.io/v1beta1
34metadata:
35  name: traefik-ingress-controller
36roleRef:
37  apiGroup: rbac.authorization.k8s.io
38  kind: ClusterRole
39  name: traefik-ingress-controller
40subjects:
41- kind: ServiceAccount
42  name: traefik-ingress-controller
43  namespace: ingress

kubectl apply -f rbac-traefik.yaml

Create file DaemonSet

daemonset-traefik.yaml

1---
2apiVersion: v1
3kind: ServiceAccount
4metadata:
5  name: traefik-ingress-controller
6  namespace: ingress
7---
8kind: DaemonSet
9apiVersion: apps/v1
10metadata:
11  name: traefik-ingress-controller
12  namespace: ingress
13  labels:
14    k8s-app: traefik-ingress-lb
15spec:
16  selector:
17    matchLabels:
18      k8s-app: traefik-ingress-lb
19      name: traefik-ingress-lb
20  template:
21    metadata:
22      labels:
23        k8s-app: traefik-ingress-lb
24        name: traefik-ingress-lb
25    spec:
26      serviceAccountName: traefik-ingress-controller
27      terminationGracePeriodSeconds: 60
28      containers:
29      - image: traefik:v1.7
30        name: traefik-ingress-lb
31        ports:
32        - name: http
33          containerPort: 80
34          hostPort: 80
35        - name: admin
36          containerPort: 8080
37          hostPort: 8080
38        securityContext:
39          capabilities:
40            drop:
41            - ALL
42            add:
43            - NET_BIND_SERVICE
44        args:
45        - --api
46        - --kubernetes
47        - --logLevel=INFO
48---
49kind: Service
50apiVersion: v1
51metadata:
52  name: traefik-ingress-service
53  namespace: ingress
54spec:
55  selector:
56    k8s-app: traefik-ingress-lb
57  ports:
58    - protocol: TCP
59      port: 80
60      name: web
61    - protocol: TCP
62      port: 8080
63      name: admin

kubectl apply -f daemonset-traefik.yaml

Done, service ingress with traefik kalian sudah selesai, saatnya kita expose service aplikasi kita

ingress yaml

1apiVersion: extensions/v1beta1
2kind: Ingress
3metadata:
4  name: aplikasi-1
5  namespace: production
6  annotations:
7    kubernetes.io/ingress.class: traefik
8spec:
9  rules:
10  - host: {domain kamu}
11    http:
12      paths: /
13      - backend:
14          serviceName: {nama service}
15          servicePort: {port service}

kamu juga bisa akses dashboard traefik

Dashboard traefik {IP_NODE-WORKER}:8080

finish, congratulations :) #cheers

Deploy Traefik Ingress on kubernetes

Flow

ingress yaml

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