How to create ingress-nginx for my kubernetes deployment and service? - kubernetes

Question

I am able to access my django app deployment using LoadBalancer service type but I'm trying to switch to ClusterIP service type and ingress-nginx but I am getting 503 Service Temporarily Unavailable when I try to access the site via the host url. Describing the ingress also shows error: endpoints "django-service" not found and error: endpoints "default-http-backend" not found. What am I doing wrong?
This is my service and ingress yaml:
---
apiVersion: v1
kind: Service
metadata:
name: django-service
spec:
type: ClusterIP
ports:
- name: http
protocol: TCP
port: 80
targetPort: 8000
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: django-ingress
annotations:
nginx.ingress.kubernetes.io/rewrite-target: /
nginx.ingress.kubernetes.io/force-ssl-redirect: 'true'
nginx.ingress.kubernetes.io/ssl-redirect: 'true'
spec:
tls:
- hosts:
- django.example.com
rules:
- host: django.example.com
http:
paths:
- path: /
pathType: Prefix
backend:
service:
name: django-service
port:
number: 80
ingressClassName: nginx
kubectl get all
$ kubectl get all
NAME READY STATUS RESTARTS AGE
pod/django-app-5bdd8ffff9-79xzj 1/1 Running 0 7m44s
pod/postgres-58fffbb5cc-247x9 1/1 Running 0 7m44s
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/django-service ClusterIP 10.233.29.58 <none> 80/TCP 7m44s
service/pg-service ClusterIP 10.233.14.137 <none> 5432/TCP 7m44s
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.apps/django-app 1/1 1 1 7m44s
deployment.apps/postgres 1/1 1 1 7m44s
NAME DESIRED CURRENT READY AGE
replicaset.apps/django-app-5bdd8ffff9 1 1 1 7m44s
replicaset.apps/postgres-58fffbb5cc 1 1 1 7m44s
describe ingress
$ kubectl describe ing django-ingress
Name: django-ingress
Labels: <none>
Namespace: django
Address: 10.10.30.50
Default backend: default-http-backend:80 (<error: endpoints "default-http-backend" not found>)
TLS:
SNI routes django.example.com
Rules:
Host Path Backends
---- ---- --------
django.example.com
/ django-service:80 (<error: endpoints "django-service" not found>)
Annotations: nginx.ingress.kubernetes.io/force-ssl-redirect: true
nginx.ingress.kubernetes.io/rewrite-target: /
nginx.ingress.kubernetes.io/ssl-redirect: true
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal Sync 5m28s (x2 over 6m5s) nginx-ingress-controller Scheduled for sync
Normal Sync 5m28s (x2 over 6m5s) nginx-ingress-controller Scheduled for sync

Answer 1

I think you forgot to make the link with your deployment in your service.
apiVersion: v1
kind: Service
metadata:
name: django-service
spec:
type: ClusterIP
ports:
- name: http
protocol: TCP
port: 80
targetPort: 8000
selector:
app: your-deployment-name
Your label must be set in your deployment as well:
spec:
selector:
matchLabels:
app: your-deployment-name
template:
metadata:
labels:
app: your-deployment-name