I’m struggling with a very basic example of an Ingress service fronting an nginx pod. When ever I try to visit my example site I get this simple text output instead of the default nginx page:
404 page not found
Here is the deployment I’m working with:
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-deployment
labels:
app: nginx
spec:
replicas: 4
selector:
matchLabels:
app: nginx
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: nginx
ports:
- containerPort: 8080
---
apiVersion: v1
kind: Service
metadata:
name: nginx-service
spec:
selector:
app: nginx
ports:
- protocol: TCP
port: 80
targetPort: 8080
---
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
name: nginx-ingress
namespace: default
spec:
rules:
- host: argo.corbe.net
http:
paths:
- backend:
serviceName: ningx
servicePort: 80
k3s kubectl get pods -o wide:
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
nginx-deployment-d6dcb985-942cz 1/1 Running 0 8h 10.42.0.17 k3s-1 <none> <none>
nginx-deployment-d6dcb985-d7v69 1/1 Running 0 8h 10.42.0.18 k3s-1 <none> <none>
nginx-deployment-d6dcb985-dqbn9 1/1 Running 0 8h 10.42.1.26 k3s-2 <none> <none>
nginx-deployment-d6dcb985-vpf79 1/1 Running 0 8h 10.42.1.25 k3s-2 <none> <none>
k3s kubectl -o wide get services:
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE SELECTOR
kubernetes ClusterIP 10.43.0.1 <none> 443/TCP 5d <none>
nginx-service ClusterIP 10.43.218.234 <none> 80/TCP 8h app=nginx
k3s kubectl -o wide get ingress:
NAME CLASS HOSTS ADDRESS PORTS AGE
nginx-ingress <none> argo.corbe.net 207.148.25.119 80 8h
k3s kubectl describe deployment nginx-deployment:
Name: nginx-deployment
Namespace: default
CreationTimestamp: Mon, 22 Feb 2021 15:19:07 +0000
Labels: app=nginx
Annotations: deployment.kubernetes.io/revision: 2
Selector: app=nginx
Replicas: 4 desired | 4 updated | 4 total | 4 available | 0 unavailable
StrategyType: RollingUpdate
MinReadySeconds: 0
RollingUpdateStrategy: 25% max unavailable, 25% max surge
Pod Template:
Labels: app=nginx
Containers:
nginx:
Image: nginx
Port: 8080/TCP
Host Port: 0/TCP
Environment: <none>
Mounts: <none>
Volumes: <none>
Conditions:
Type Status Reason
---- ------ ------
Available True MinimumReplicasAvailable
Progressing True NewReplicaSetAvailable
OldReplicaSets: <none>
NewReplicaSet: nginx-deployment-7848d4b86f (4/4 replicas created)
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal ScalingReplicaSet 2m43s deployment-controller Scaled up replica set nginx-deployment-7848d4b86f to 1
Normal ScalingReplicaSet 2m43s deployment-controller Scaled down replica set nginx-deployment-d6dcb985 to 3
Normal ScalingReplicaSet 2m43s deployment-controller Scaled up replica set nginx-deployment-7848d4b86f to 2
Normal ScalingReplicaSet 2m40s deployment-controller Scaled down replica set nginx-deployment-d6dcb985 to 2
Normal ScalingReplicaSet 2m40s deployment-controller Scaled up replica set nginx-deployment-7848d4b86f to 3
Normal ScalingReplicaSet 2m40s deployment-controller Scaled down replica set nginx-deployment-d6dcb985 to 1
Normal ScalingReplicaSet 2m40s deployment-controller Scaled up replica set nginx-deployment-7848d4b86f to 4
Normal ScalingReplicaSet 2m38s deployment-controller Scaled down replica set nginx-deployment-d6dcb985 to 0
2
Answers
you are getting 404 which mean request is coming till nginx or ingress you are using
there might be now issue with your ingress
check the service name you are using
serviceName: ningx
.it should be nginx-service ingress should be something like
whole flow will goes something like :
DNS > ingress > service (nginx-service) > deployment (nginx-deployment) or pod replicas.
nginx image listens for connection on port 80 by default.
Notice it’s port 80 that is open, not port 8080.
This mean that your service is misconfigured because it forwards to port 8080.
You should set target port to 80 like following.:
Also notice the service name:
And as a backed you put service of a different name:
Change it to the actual name of a service, like below:
Apply the changes and it should work now.