Using Calico as CNI and CRI-O. DNS settings properly configured. Installed NGINX ingress controller via official documentation page of NGINX using helm. Set replicaset to 2 when installing.
After that used this file for creating 3 objects: Deployment, Service for exposing web server and Ingress.
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
name: test-nginx
spec:
replicas: 1
selector:
matchLabels:
app: nginx-service-pod
template:
metadata:
labels:
app: nginx-service-pod
spec:
containers:
- image: nginx
name: test-nginx
---
apiVersion: v1
kind: Service
metadata:
name: nginx-service
spec:
type: ClusterIP
selector:
app: nginx-service-pod
ports:
- port: 80
targetPort: 80
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: test-ingress
spec:
rules:
- host: k8s.example.com
http:
paths:
- path: /test
pathType: Prefix
backend:
service:
name: nginx-service
port:
number: 80
...Tried to test deployment service by curling it and it is working correct:
# curl http://10.103.88.163
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
html { color-scheme: light dark; }
body { width: 35em; margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif; }
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>But when I'm trying to curl Ingress getting error:
# curl http://k8s.example.com/test
curl: (7) Failed to connect to k8s.example.com port 80: Connection refusedWhy this is happening? Because as I see there is no misconfig in the objects configuration.
This problem should be resolved by adding
spec:
template:
spec:
hostNetwork: trueto the ingress controller yaml manifest. For more please check this github issue and this answer.