oneke_traefik - lukasfazik/one-apps GitHub Wiki

Ingress Controller (Traefik)

Traefik is deployed during cluster creation, from an official Helm chart with the following manifest:

---
apiVersion: v1
kind: Namespace
metadata:
  name: traefik-system
---
apiVersion: helm.cattle.io/v1
kind: HelmChart
metadata:
  name: one-traefik
  namespace: kube-system
spec:
  targetNamespace: traefik-system
  chartContent: <BASE64 OF A TRAEFIK HELM CHART TGZ FILE>
  valuesContent: |
    deployment:
      replicas: 2
    affinity:
      podAntiAffinity:
        requiredDuringSchedulingIgnoredDuringExecution:
          - topologyKey: kubernetes.io/hostname
            labelSelector:
              matchLabels:
                app.kubernetes.io/name: traefik
    service:
      type: NodePort
    ports:
      web:
        nodePort: 32080
      websecure:
        nodePort: 32443
  • A dedicated namespace traefik-system is provided.
  • An anti-affinity rule is applied to Traefik pods to minmize potential downtime during failures and upgrades.
  • Traefik is exposed on a NodePort type of the Kubernetes Service. By default the HAProxy instance (running on the leader VNF node) connects to all worker nodes on ports 32080 and 32443, then forwards all incoming traffic to ports 80 and 443 to the Traefik instance running inside Kubernetes.
graph LR;
    internet --- vnf;
    vnf --- master & worker & storage;
    internet((Internet));
    style vnf text-align:left
    style master text-align:left
    style worker text-align:left
    style storage text-align:left
    vnf[["vnf (NAT 🔀)"<br>haproxy - *:80,443<br><hr>eth0:10.2.11.86<br><hr>eth1:172.20.0.68]];
    master[master<br><hr>eth0:172.20.0.101<br><hr>GW:172.20.0.86<br>DNS:1.1.1.1];
    worker[worker<br>traefik - *:32080,32443<br><hr>eth0:172.20.0.102<br><hr>GW:172.20.0.86<br>DNS:1.1.1.1];
    storage[storage<br><hr>eth0:172.20.0.103<br><hr>GW:172.20.0.86<br>DNS:1.1.1.1];
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Important

To deploy Traefik:

  • Set ONEAPP_K8S_TRAEFIK_ENABLED to "YES".

Warning

Since Traefik 3.0.0 apiVersion: traefik.io/v1alpha1 must be used in CRD objects.

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