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Addon: Ingress

This addon adds an NGINX Ingress Controller for MicroK8s. It is enabled by running the command:

microk8s enable ingress

With the Ingress addon enabled, a HTTP/HTTPS ingress rule can be created with an Ingress resource. For example:

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: http-ingress
spec:
  rules:
  - http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: some-service
            port:
              number: 80

Additionally, the ingress addon can be configured to expose TCP and UDP services by editing the nginx-ingress-tcp-microk8s-conf and nginx-ingress-udp-microk8s-conf ConfigMaps respectively, and then exposing the port in the Ingress controller.

For example, here a Redis service is exposed via TCP:

---
apiVersion: v1
kind: ConfigMap
metadata:
  name: nginx-ingress-tcp-microk8s-conf
  namespace: ingress
data:
  6379: "default/redis:6379"
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: nginx-ingress-microk8s-controller
  namespace: ingress
spec:
  template:
    spec:
      containers:
      - name: nginx-ingress-microk8s
        ports:
        - containerPort: 80
        - containerPort: 443
        - name: proxied-tcp-6379
          containerPort: 6379
          hostPort: 6379
          protocol: TCP

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