英文:
Nginx ingress controller returns 404
问题
I am trying to create Ingress for my kubernetes service. I am using minikube running on WSL2.
Here are my deployment, service and ingress settings
apiVersion: apps/v1
kind: Deployment
metadata:
name: {{.Chart.Name}}-backend
labels:
app: {{.Chart.Name}}-backend
spec:
replicas: {{ .Values.replicas }}
selector:
matchLabels:
service: backend
app: {{.Chart.Name}}-backend
template:
metadata:
labels:
service: backend
app: {{.Chart.Name}}-backend
spec:
containers:
- name: kuberdemo-app
image: {{ .Values.image }}
ports:
- containerPort: 8091
targetPort: 8091
protocol: TCP
name: app-port
envFrom:
- configMapRef:
name: kuberdemo-config
startupProbe:
httpGet:
path: /actuator/health/liveness
port: 14000
failureTreshold: 2
periodSeconds: 10
readinessProbe:
httpGet:
path: /actuator/health/readiness
port: 14000
failureTreshold: 2
periodSeconds: 10
livenessProbe:
httpGet:
path: /actuator/health/liveness
port: 14000
failureTreshold: 2
periodSeconds: 10
resources:
limits:
cpu: "2000m"
memory: "2Gi"
requests:
cpu: "2000m"
memory: "2Gi"
apiVersion: v1
kind: Service
metadata:
name: kuberdemo-service
spec:
type: ClusterIP
selector:
app: {{.Chart.Name}}-backend
ports:
- protocol: TCP
port: 8090
targetPort: 8091
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: kuberdemo-ingress
spec:
rules:
- host: kuberdemo.info
http:
paths:
- path: /
pathType: Prefix
backend:
service:
name: kuberdemo-service
port:
number: 8090
Service is working correctly, because I get answers from it when calling it directly.
kubectl port-forward service/kuberdemo-service -n kuberdemo 8080:8090
curl --location 'http://localhost:8080/users'
the answer is [] (right now there are no data in my db).
But when I am trying to call it using host or after forwarding localhost 8080 port to ingress-nginx port, I am getting 404 error from NGINX.
kubectl port-forward -n ingress-nginx ingress-nginx-controller-6cc5ccb977-zzbcb 8080:80
curl --location 'http://localhost:8080/users'
the answer is
<html>
<head><title>404 Not Found</title></head>
<body>
<center><h1>404 Not Found</h1></center>
<hr><center>nginx</center>
</body>
</html>
It's my first time working with kubernetes, so it will be great if you find some mistakes in my configuration files. I suppose, I have some troubles with nginx configuration, but I don't know how to fix them.
英文:
I am trying to create Ingress for my kubernetes service. I am using minikube running on WSL2.
Here are my deployment, service and ingress settings
apiVersion: apps/v1
kind: Deployment
metadata:
name: {{.Chart.Name}}-backend
labels:
app: {{.Chart.Name}}-backend
spec:
replicas: {{ .Values.replicas }}
selector:
matchLabels:
service: backend
app: {{.Chart.Name}}-backend
template:
metadata:
labels:
service: backend
app: {{.Chart.Name}}-backend
spec:
containers:
- name: kuberdemo-app
image: {{ .Values.image }}
ports:
- containerPort: 8091
targetPort: 8091
protocol: TCP
name: app-port
envFrom:
- configMapRef:
name: kuberdemo-config
startupProbe:
httpGet:
path: /actuator/health/liveness
port: 14000
failureTreshold: 2
periodSeconds: 10
readinessProbe:
httpGet:
path: /actuator/health/readiness
port: 14000
failureTreshold: 2
periodSeconds: 10
livenessProbe:
httpGet:
path: /actuator/health/liveness
port: 14000
failureTreshold: 2
periodSeconds: 10
resources:
limits:
cpu: "2000m"
memory: "2Gi"
requests:
cpu: "2000m"
memory: "2Gi"
apiVersion: v1
kind: Service
metadata:
name: kuberdemo-service
spec:
type: ClusterIP
selector:
app: {{.Chart.Name}}-backend
ports:
- protocol: TCP
port: 8090
targetPort: 8091
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: kuberdemo-ingress
spec:
rules:
- host: kuberdemo.info
http:
paths:
- path: /
pathType: Prefix
backend:
service:
name: kuberdemo-service
port:
number: 8090
Service is working correctly, because I get answers from it when calling it directly.
kubectl port-forward service/kuberdemo-service -n kuberdemo 8080:8090
curl --location 'http://localhost:8080/users'
the answer is [] (right now there are no data in my db).
But when I am trying to call it using host or after forwarding localhost 8080 port to ingress-nginx port, I am getting 404 error from NGINX.
kubectl port-forward -n ingress-nginx ingress-nginx-controller-6cc5ccb977-zzbcb 8080:80
curl --location 'http://localhost:8080/users'
the answer is
<html>
<head><title>404 Not Found</title></head>
<body>
<center><h1>404 Not Found</h1></center>
<hr><center>nginx</center>
</body>
</html>
It's my first time working with kubernetes, so it will be great if you find some mistakes in my configuration files. I suppose, I have some troubles with nginx configuration, but I don't know how to fix them.
答案1
得分: 0
你需要包括一个 -H Host 头部。
您的 Ingress 定义如下，Ingress 控制器使用它：
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: kuberdemo-ingress
spec:
rules:
- host: kuberdemo.info
http:
paths:
- path: /
pathType: Prefix
backend:
service:
name: kuberdemo-service
port:
number: 8090
没有一个针对 localhost 的块，所以当您执行以下操作时：
curl --location 'http://localhost:8080/users'
Nginx 寻找具有 localhost 块的 Ingress，找不到，然后转到默认的 404 后端。
尝试：
curl --location 'http://localhost:8080/users' -H "Host: kuberdemo.info"
英文:
You need to include a -H Host header.
Your ingress definition, which the ingress controller uses:
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: kuberdemo-ingress
spec:
rules:
- host: kuberdemo.info
http:
paths:
- path: /
pathType: Prefix
backend:
service:
name: kuberdemo-service
port:
number: 8090
Doesn't have a block for localhost so when you do
curl --location 'http://localhost:8080/users'
Nginx looks for an ingress that has a block for localhost, doesn't find one, and goes to the default 404 backend.
Try:
curl --location 'http://localhost:8080/users' -H "Host: kuberdemo.info"
答案2
得分: 0
你错过了Ingress类名，请按照下面的示例添加ingressClassName：
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: kuberdemo-ingress
spec:
ingressClassName: nginx
rules:
- host: kuberdemo.info
http:
paths:
- path: /
pathType: Prefix
backend:
service:
name: kuberdemo-service
port:
number: 8090
英文:
You missed the ingress class name,add ingressclassname as shown below:
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: kuberdemo-ingress
spec:
ingressClassName: nginx
rules:
- host: kuberdemo.info
http:
paths:
- path: /
pathType: Prefix
backend:
service:
name: kuberdemo-service
port:
number: 8090
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