k8s: ingress spec version update

Sergey Royz

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Jul 28, 2021

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Issue

extensions/v1beta1 Ingress is deprecated in v1.14+, unavailable in v1.22+; use networking.k8s.io/v1 Ingress

Before

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: {{ .Values.app }}-ingress
  namespace: acme-{{ .Values.env }}
  annotations:
    kubernetes.io/ingress.class: nginx
    cert-manager.io/cluster-issuer: letsencrypt-prod
spec:
  rules:
    - host: "service-{{ .Values.env }}.acme.com"
      http:
        paths:
          - backend:
              serviceName: {{ .Values.app }}
              servicePort: 3000
  tls:
    - hosts:
        - service-{{ .Values.env }}.acme.com
      secretName: letsencrypt-prod

After

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: {{ .Values.app }}-ingress
  namespace: acme-{{ .Values.env }}
  annotations:
    kubernetes.io/ingress.class: nginx
    cert-manager.io/cluster-issuer: letsencrypt-prod
spec:
  rules:
    - host: "service-{{ .Values.env }}.acme.com"
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: {{ .Values.app }}
                port:
                  number: 3000
  tls:
    - hosts:
        - service-{{ .Values.env }}.acme.com
      secretName: letsencrypt-prod

Change summary

• set apiVersion to networking.k8s.io/v1
• add path and pathType: Prefix to paths section
• change serviceName and servicePort to service.name and service.port.number respectively