I have an Azure Kubernetes Cluster on which a couple of NodesJS Express Applications runs. I handle the incoming request by nginx-ingress
nginx-ingress
controller: https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/static/mandatory.yaml
ingress:
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: myingress
annotations:
nginx.ingress.kubernetes.io/rewrite-target: /$2
#nginx.ingress.kubernetes.io/use-regex: "true"
spec:
rules:
- http:
paths:
- path: /app1(/|$)(.*)
backend:
serviceName: app1-service
servicePort: 80
- path: /app2(/|$)(.*)
backend:
serviceName: app2-service
servicePort: 80
example app1-service
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: app1
spec:
replicas: 2
template:
metadata:
labels:
app: app1
spec:
nodeSelector:
"beta.kubernetes.io/os": linux
containers:
- name: nodejs
image: xxx.azurecr.io/app1:v1.0
imagePullPolicy: Always
ports:
- containerPort: 80
protocol: TCP
---
kind: Service
apiVersion: v1
metadata:
name: app1-service
spec:
selector:
app: app1
ports:
- port: 80
protocol: TCP
type: NodePort
Like you can see all traffic on kubernetesurl.com/app1 gets forwarded to app1-service. And until there everything works.
example app1
Dockerfile: FROM node:8 WORKDIR /opt
COPY package.json /opt
RUN npm install
COPY . /opt
CMD ["npm", "start"]
server.js:
app.get('/', function(request, response) {
response.sendFile(path.join(__dirname + '/login.html'));
});
app.post('/auth', function(request, response) {
... some auth stuff
response.redirect('/home');
});
app.get('/home', function(request, response) {
response.sendFile(path.join(__dirname + '/home.html'));
})
login.html:
<form action="auth" method="POST">
<input type="text" name="username" placeholder="Username" required>
<input type="password" name="password" placeholder="Password" required>
<input type="submit">
</form>
Question
If I submit my form, I get redirected to kubernetesurl.com/auth.
But I need kubernetesurl.com/app1/auth.
If I use a response.redirect('/home') inside '/', I get redirected to kubernetesurl.com/home.
But I need kubernetesurl.com/app1/home.
If I add a link with relative url to index.html like home, I get redirected to kubernetesurl.com/home.
But I need kubernetesurl.com/app1/home.
When I start express as a service on my VM, everything works (of course, because the app runs on '/' without proxying).
How I get it running with proxying?
