How to add blocking IP rules on each nginx-ingress host - nginx

Question

I have searched a lot and I didn't find the solution. I want to block/allow ip's into each host definition in the nginx-ingress, not per locations.
This is the ingress.yaml:
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: ingress-nginx
annotations:
kubernetes.io/ingress.class: "nginx"
spec:
rules:
- host: test1.test.com
#Blocking rules here, only affecting test1.test.com domain
http:
paths:
- path: /
backend:
serviceName: wordpressA
servicePort: 80
- host: test2.test.com
#Blocking rules here, only affecting test2.test.com domain
http:
paths:
- path: /
backend:
serviceName: wordpressB
servicePort: 80
Many thanks for your time

Answer 1

You need to split those host definitions into separate ingress rules.
Then you can use annotation to whitelist source range using following annotation :
nginx.ingress.kubernetes.io/whitelist-source-range
Something like this:
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: app1-ingress
annotations:
kubernetes.io/ingress.class: "nginx"
nginx.ingress.kubernetes.io/whitelist-source-range: "10.0.0.0/24"
spec:
rules:
- host: app1.com
http:
paths:
- path: /
backend:
serviceName: app1-service
servicePort: http
---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: app2-ingress
annotations:
kubernetes.io/ingress.class: "nginx"
nginx.ingress.kubernetes.io/whitelist-source-range: "10.0.0.0/24"
spec:
rules:
- host: app2.com
http:
paths:
- path: /
backend:
serviceName: app2-service
servicePort: http
You can also use server snipper and add nginx config to the yaml.
Something like this:
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
annotations:
nginx.ingress.kubernetes.io/server-snippet: |
location / {
# block one workstation
deny 192.168.1.1;
# allow anyone in 192.168.1.0/24
allow 192.168.1.0/24;
# drop rest of the world
deny all;
}