NGINX Ingress Controller

Purpose: HTTP/HTTPS ingress controller for Kubernetes

Version: v1.11.0 (Helm chart: ingress-nginx 4.10.0)

Namespace: ingress-nginx

Description

Routes external traffic to services based on ingress rules. Handles SSL termination, path-based routing, and load balancing.

Installation

Installed via ArgoCD from Helm chart: ingress-nginx/ingress-nginx

Configuration

Configuration file: config/dev/applications/nginx-ingress-values.yaml

controller:
  service:
    type: LoadBalancer
    externalTrafficPolicy: Local
  publishService:
    enabled: false
  metrics:
    enabled: true
    serviceMonitor:
      enabled: true
      release: kube-prometheus-stack
  admissionWebhooks:
    enabled: true
  resources:
    requests:
      cpu: 100m
      memory: 90Mi

defaultBackend:
  enabled: false

IP Address

• External IP: 10.0.0.211 (via MetalLB)
• Service: ingress-nginx-controller

kubectl get svc -n ingress-nginx
# NAME                       TYPE           CLUSTER-IP     EXTERNAL-IP   PORT(S)
# ingress-nginx-controller   LoadBalancer   10.96.89.123   10.0.0.211    80:30081/TCP,443:30080/TCP

DNS

All ingress resources use domain: ssdk8s.xyz

Example Ingress

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: example-app
  annotations:
    cert-manager.io/cluster-issuer: letsencrypt-prod
    nginx.ingress.kubernetes.io/ssl-redirect: "true"
spec:
  ingressClassName: nginx
  tls:
    - hosts:
        - app.ssdk8s.xyz
      secretName: app-tls
  rules:
    - host: app.ssdk8s.xyz
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: my-service
                port:
                  number: 80

Ports

Port	Service
80	HTTP
443	HTTPS
8443	Admission Webhook

Metrics

Prometheus metrics enabled via ServiceMonitor:

• Endpoint: ingress-nginx-controller-metrics:10254/metrics