Unable to use cert-manager and nginx ingress controller with SSL termination - kubernetes

Question

I am trying out nginx-ingress on GKE with SSL termination for use cases. I've traveled to millions of blogs on this process which uses cert-manager with nginx ingress controller but none of them worked in my case.
This certainly means I am doing something wrong. But I am not sure what. Here's what I did:
Create sample app exposed on ClusterIP
Deploy nginx-ingress
Create issuer
Create nginx ingress with issuer.
Result:
After describing the nginx ingress, the events areas shows none. That means everything is completely blank. Not a single thing happened for requesting certs, http validation, etc.
nginx ingress:
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: my-ingress
annotations:
kubernetes.io/ingress.class: nginx
certmanager.k8s.io/cluster-issuer: letsencrypt-staging
kubernetes.io/tls-acme: 'true'
spec:
rules:
-
host: wptls.ml
http: {paths: [{path: /, backend: {serviceName: web, servicePort: 80}}]}
tls:
-
secretName: tls-staging-cert
hosts: [wptls.ml]
clusterissuer.yml:
apiVersion: certmanager.k8s.io/v1alpha1
kind: ClusterIssuer
metadata:
name: letsencrypt-staging
spec:
acme:
server: 'https://acme-staging-v02.api.letsencrypt.org/directory'
email: xyz#gmail.com
privateKeySecretRef:
name: letsencrypt-sec-staging
http01: {}
I am not sure if there's anything else which needs to be done.

Answer 1

Try Ingress extra annotation likes
nginx.ingress.kubernetes.io/ssl-passthrough: "true"
nginx.ingress.kubernetes.io/secure-backends: "true"
https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/annotations/