503 Service Temporarily Unavailable Nginx + Kibana + AKS - kubernetes

Question

I have deployed Kibana in AKS with the server.basepath of /logs since I want it to be deployed in subpath. I am trying to access Kibana service using nginx controller It is giving 503 service unavailable but Service/Pod is running. Please help me on this.
Kibana Deployment:
apiVersion: apps/v1
kind: Deployment
metadata:
name: kibana
namespace: kube-logging
labels:
app.kubernetes.io/name: kibana
helm.sh/chart: kibana-0.1.0
app.kubernetes.io/instance: icy-coral
app.kubernetes.io/managed-by: Tiller
spec:
replicas: 1
selector:
matchLabels:
app.kubernetes.io/name: kibana
app.kubernetes.io/instance: icy-coral
template:
metadata:
labels:
app.kubernetes.io/name: kibana
app.kubernetes.io/instance: icy-coral
spec:
containers:
- name: kibana
image: "docker.elastic.co/kibana/kibana:7.6.0"
imagePullPolicy: IfNotPresent
ports:
- name: http
containerPort: 5601
protocol: TCP
env:
- name: ELASTICSEARCH_URL
value: http://elasticsearch:9200
- name: SERVER_BASEPATH
value: /logs
- name: SERVER_REWRITEBASEPATH
value: "true"
resources:
limits:
cpu: 1000m
requests:
cpu: 100m
Kibana service:
apiVersion: v1
kind: Service
metadata:
name: kibana
namespace: kube-logging
labels:
app.kubernetes.io/name: kibana
helm.sh/chart: kibana-0.1.0
app.kubernetes.io/instance: icy-coral
app.kubernetes.io/managed-by: Tiller
spec:
type: ClusterIP
ports:
- port: 80
targetPort: 5601
protocol: TCP
name: http
selector:
app.kubernetes.io/name: kibana
app.kubernetes.io/instance: icy-coral
Kibana Ingress:
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: kibana
labels:
app.kubernetes.io/name: kibana
helm.sh/chart: kibana-0.1.0
app.kubernetes.io/instance: icy-coral
app.kubernetes.io/managed-by: Tiller
annotations:
ingress.kubernetes.io/send-timeout: "600"
kubernetes.io/ingress.class: nginx
nginx.ingress.kubernetes.io/proxy-connect-timeout: "600"
nginx.ingress.kubernetes.io/proxy-read-timeout: "1800"
nginx.ingress.kubernetes.io/proxy-send-timeout: "1800"
nginx.ingress.kubernetes.io/rewrite-target: /$1
nginx.ingress.kubernetes.io/ssl-redirect: "false"
spec:
rules:
- host: ""
http:
paths:
- path: /logs/?(.*)
backend:
serviceName: kibana
servicePort: 80

Answer 1

Ensure kibana is running with:
kubectl logs kibana
Check the endpoint for the service is not empty:
kubectl describe svc kibana
Check the ingress is correctly configured:
kubectl describe ingress kibana
check the ingress-controller logs:
kubectl logs -n nginx-ingress-controller-.....
Update:
You can only refer services on the same namespace of the ingress. So try to move ingress to kube-logging namespace.
Checkout this: https://github.com/kubernetes/kubernetes/issues/17088