Ingress not binding to Load Balancer - nginx

Question

I have my A record on Netlify mapped to my Load Balancer IP Address on Digital Ocean, and it's able to hit the nginx server, but I'm getting a 404 when trying to access any of the apps APIs. I noticed that the status of my Ingress doesn't show that it is bound to the Load Balancer.
Does anybody know what I am missing to get this setup?
Application Ingress:
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: d2d-server
spec:
rules:
- host: api.cloud.myhostname.com
http:
paths:
- backend:
service:
name: d2d-server
port:
number: 443
path: /
pathType: ImplementationSpecific
Application Service:
apiVersion: v1
kind: Service
metadata:
name: d2d-server
spec:
selector:
app: d2d-server
ports:
- name: http-api
protocol: TCP
port: 443
targetPort: 8080
type: ClusterIP
Ingress Controller:
apiVersion: apps/v1
kind: Deployment
metadata:
name: ingress-nginx-controller
namespace: ingress-nginx
uid: fc64d9f6-a935-49b2-9d7a-b862f660a4ea
resourceVersion: '257931'
generation: 1
creationTimestamp: '2021-10-22T05:31:26Z'
labels:
app.kubernetes.io/component: controller
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/version: 1.0.4
helm.sh/chart: ingress-nginx-4.0.6
annotations:
deployment.kubernetes.io/revision: '1'
spec:
replicas: 1
selector:
matchLabels:
app.kubernetes.io/component: controller
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
template:
metadata:
creationTimestamp: null
labels:
app.kubernetes.io/component: controller
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
spec:
volumes:
- name: webhook-cert
secret:
secretName: ingress-nginx-admission
defaultMode: 420
containers:
- name: controller
image: >-
k8s.gcr.io/ingress-nginx/controller:v1.0.4#sha256:545cff00370f28363dad31e3b59a94ba377854d3a11f18988f5f9e56841ef9ef
args:
- /nginx-ingress-controller
- '--publish-service=$(POD_NAMESPACE)/ingress-nginx-controller'
- '--election-id=ingress-controller-leader'
- '--controller-class=k8s.io/ingress-nginx'
- '--configmap=$(POD_NAMESPACE)/ingress-nginx-controller'
- '--validating-webhook=:8443'
- '--validating-webhook-certificate=/usr/local/certificates/cert'
- '--validating-webhook-key=/usr/local/certificates/key'
ports:
- name: http
containerPort: 80
protocol: TCP
- name: https
containerPort: 443
protocol: TCP
- name: webhook
containerPort: 8443
protocol: TCP
env:
- name: POD_NAME
valueFrom:
fieldRef:
apiVersion: v1
fieldPath: metadata.name
- name: POD_NAMESPACE
valueFrom:
fieldRef:
apiVersion: v1
fieldPath: metadata.namespace
- name: LD_PRELOAD
value: /usr/local/lib/libmimalloc.so
resources:
requests:
cpu: 100m
memory: 90Mi
volumeMounts:
- name: webhook-cert
readOnly: true
mountPath: /usr/local/certificates/
livenessProbe:
httpGet:
path: /healthz
port: 10254
scheme: HTTP
initialDelaySeconds: 10
timeoutSeconds: 1
periodSeconds: 10
successThreshold: 1
failureThreshold: 5
readinessProbe:
httpGet:
path: /healthz
port: 10254
scheme: HTTP
initialDelaySeconds: 10
timeoutSeconds: 1
periodSeconds: 10
successThreshold: 1
failureThreshold: 3
lifecycle:
preStop:
exec:
command:
- /wait-shutdown
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
imagePullPolicy: IfNotPresent
securityContext:
capabilities:
add:
- NET_BIND_SERVICE
drop:
- ALL
runAsUser: 101
allowPrivilegeEscalation: true
restartPolicy: Always
terminationGracePeriodSeconds: 300
dnsPolicy: ClusterFirst
nodeSelector:
kubernetes.io/os: linux
serviceAccountName: ingress-nginx
serviceAccount: ingress-nginx
securityContext: {}
schedulerName: default-scheduler
strategy:
type: RollingUpdate
rollingUpdate:
maxUnavailable: 25%
maxSurge: 25%
revisionHistoryLimit: 10
progressDeadlineSeconds: 600
Load Balancer:
apiVersion: v1
kind: Service
metadata:
name: ingress-nginx-controller
namespace: ingress-nginx
labels:
app.kubernetes.io/component: controller
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/version: 1.0.4
helm.sh/chart: ingress-nginx-4.0.6
annotations:
kubernetes.digitalocean.com/load-balancer-id: <LB_ID>
service.beta.kubernetes.io/do-loadbalancer-enable-proxy-protocol: 'true'
service.beta.kubernetes.io/do-loadbalancer-name: ingress-nginx
service.beta.kubernetes.io/do-loadbalancer-protocol: https
status:
loadBalancer:
ingress:
- ip: <IP_HIDDEN>
spec:
ports:
- name: http
protocol: TCP
appProtocol: http
port: 80
targetPort: http
nodePort: 31661
- name: https
protocol: TCP
appProtocol: https
port: 443
targetPort: https
nodePort: 32761
selector:
app.kubernetes.io/component: controller
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/name: ingress-nginx
clusterIP: <IP_HIDDEN>
clusterIPs:
- <IP_HIDDEN>
type: LoadBalancer
sessionAffinity: None
externalTrafficPolicy: Local
healthCheckNodePort: 30477
ipFamilies:
- IPv4
ipFamilyPolicy: SingleStack

Answer 1

I just needed to add the field ingressClassName of nginx to the ingress spec.

Answer 2

The kind: ingress are proxy rules about managing traffic from the Ingress Controller to the incluster services. But to achive this, outside traffic needs to reach Ingress Controller.
https://kubernetes.io/docs/concepts/services-networking/ingress/#what-is-ingress
lets assume that "client" is our Loadbalancer
So what I assume you want to do is to point your LoadBalancer to the Ingress Controler and then, based on you Ingress rules, it will route traffic to you ( in this case ) d2d service.
To point a LB to a pod, you need to create a Service resource with spec.type: Loadbalancer field. I modify an example from digital ocean that should match your needs. Notice the annotation of the Service that can modify the Loadbalancer params, more on this you can find here: https://github.com/digitalocean/digitalocean-cloud-controller-manager/blob/master/docs/controllers/services/annotations.md
apiVersion: v1
kind: Service
metadata:
name: ingress-nginx-controller
namespace: ingress-nginx
annotations:
# #Edit set it to http since no certyficate is provided
service.beta.kubernetes.io/do-loadbalancer-protocol: "http"
service.beta.kubernetes.io/do-loadbalancer-name: "<YOUR_LB_NAME>"
spec:
type: LoadBalancer
selector:
app.kubernetes.io/component: controller
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/version: 1.0.4
helm.sh/chart: ingress-nginx-4.0.6
ports:
- name: http
protocol: TCP
port: 80
targetPort: 80
- name: https
protocol: TCP
port: 443
targetPort: 443
- name: webhook
protocol: TCP
port: 8443
targetPort: 8443