Nginx controller is throwing 404 error for any ingress resource setup in local.
nginx-ingress controller setup was made according to steps detailed in the below document and ingress controller was exposed as NodePort Service in local setup
The following sample ingress resources were used to test ingress banana.yaml
kind: Pod
apiVersion: v1
metadata:
name: banana-app
namespace: nginx-ingress
labels:
app: banana
spec:
containers:
- name: banana-app
image: hashicorp/http-echo
args:
- "-text=banana"
---
kind: Service
apiVersion: v1
metadata:
name: banana-service
namespace: nginx-ingress
spec:
selector:
app: banana
ports:
- port: 5678 apple.yaml
kind: Pod
apiVersion: v1
metadata:
name: apple-app
namespace: nginx-ingress
labels:
app: apple
spec:
containers:
- name: apple-app
image: hashicorp/http-echo
args:
- "-text=apple"
---
kind: Service
apiVersion: v1
metadata:
name: apple-service
namespace: nginx-ingress
spec:
selector:
app: apple
ports:
- port: 5678 # ingressfile.yaml
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: example-ingress
namespace: nginx-ingress
annotations:
ingress.kubernetes.io/rewrite-target: /
kubernetes.io/ingress.class: nginx
spec:
rules:
- http:
paths:
- path: /apple
backend:
serviceName: apple-service
servicePort: 5678
- path: /banana
backend:
serviceName: banana-service
servicePort: 5678Following is the list of services
NAMESPACE NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
nginx-ingress apple-service ClusterIP 10.111.230.109 <none> 5678/TCP 95m
nginx-ingress banana-service ClusterIP 10.102.139.127 <none> 5678/TCP 95m
nginx-ingress nginx-ingress NodePort 10.97.65.187 <none> 80:30207/TCP,443:31031/TCP 6d23h[root@kube01 ingress]# kubectl get ing
NAME HOSTS ADDRESS PORTS AGE
example-ingress * 80 131m
[root@kube01 ingress]# kubectl describe ing example-ingress
Name: example-ingress
Namespace: default
Address:
Default backend: default-http-backend:80 (<none>)
Rules:
Host Path Backends
---- ---- --------
*
/apple apple-service:5678 (10.244.2.7:5678)
/banana banana-service:5678 (10.244.1.11:5678)
Annotations:
ingress.kubernetes.io/rewrite-target: /
Events: <none>
If I directly curl the pods as follows, it's working as expected
[root@kube01 ingress]# curl http://10.244.2.7:5678/apple
apple
[root@kube01 ingress]# curl http://10.244.1.11:5678/banana
banana
[root@kube01 ingress]#However if I try to access it through Nodeport ingress controller I'm always getting not found as below
[root@kube01 ingress]# curl http://xx.xx.xx.193:30207/apple
<html>
<head><title>404 Not Found</title></head>
<body>
<center><h1>404 Not Found</h1></center>
<hr><center>nginx/1.17.2</center>
</body>
</html>
[root@kube01 ingress]# curl http://xx.xx.xx.193:30207/banana
<html>
<head><title>404 Not Found</title></head>
<body>
<center><h1>404 Not Found</h1></center>
<hr><center>nginx/1.17.2</center>
</body>
</html>
[root@kube01 ingress]#curl http://xx.xx.xx.193:30207/apple curl http://xx.xx.xx.193:30207/banana The above statements should display apple and banana respectively when accessed from outside or from a browser
Update: I went into the pod where the ingress controller is running and checked its config file and found that ingress resources are not applied to the controller. I tried relaunching the container with no luck. I also tried reapplying the ingress resource but the config file in the pod is not changing. Everything that goes to controller is throwing 404 as in location tag in the config file. Any help is appreciated on why the resource is not getting applied to the controller
root@nginx-ingress-685d7964cd-djvgf:/etc/nginx# cat nginx.conf
user nginx;
worker_processes auto;
daemon off;
error_log /var/log/nginx/error.log notice;
pid /var/run/nginx.pid;
events {
worker_connections 1024;
}
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log /var/log/nginx/access.log main;
sendfile on;
#tcp_nopush on;
keepalive_timeout 65s;
keepalive_requests 100;
#gzip on;
server_names_hash_max_size 512;
variables_hash_bucket_size 256;
variables_hash_max_size 1024;
map $http_upgrade $connection_upgrade {
default upgrade;
'' close;
}
server {
listen 80 default_server;
listen 443 ssl default_server;
ssl_certificate /etc/nginx/secrets/default;
ssl_certificate_key /etc/nginx/secrets/default;
server_name _;
server_tokens "on";
access_log off;
location / {
return 404;
}
}
# stub_status
server {
listen 8080;
allow 127.0.0.1;
deny all;
location /stub_status {
stub_status;
}
}
include /etc/nginx/config-version.conf;
include /etc/nginx/conf.d/*.conf;
server {
listen unix:/var/run/nginx-502-server.sock;
access_log off;
location / {
return 502;
}
}
}
stream {
log_format stream-main '$remote_addr [$time_local] '
'$protocol $status $bytes_sent $bytes_received '
'$session_time';
access_log /var/log/nginx/stream-access.log stream-main;
}
root@nginx-ingress-685d7964cd-djvgf:/etc/nginx#I have few comments (what i have noticed):
1, Your ingress is working in default namespace:
Namespace: default
instead of nginx-ingress namespace2, In your kubectl describe ing example-ingress there is no annotation like:
kubernetes.io/ingress.class: nginx3, I got the same issue and I couldn't reach the service but it will work when you change configmap for ingress controller with ssl-redirect: "false" option. Then it will work without spec.rules.host parameter inside your ingress resources.
Hope this help