minikube service is failing to expose URL - minikube

Question

F:\Udemy\GitRepo\Kubernetes-Tutorial>kubectl get pod -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
my-app-deploy-68698d9757-wrs9z 1/1 Running 0 14m 172.17.0.3 minikube <none> <none>
F:\Udemy\GitRepo\Kubernetes-Tutorial>minikube service my-app-svc
|-----------|------------|-------------|-----------------------------|
| NAMESPACE | NAME | TARGET PORT | URL |
|-----------|------------|-------------|-----------------------------|
| default | my-app-svc | 80 | http://172.30.105.146:30365 |
|-----------|------------|-------------|-----------------------------|
* Opening service default/my-app-svc in default browser...
F:\Udemy\GitRepo\Kubernetes-Tutorial>kubectl describe service my-app-svc
Name: my-app-svc
Namespace: default
Labels: <none>
Annotations: <none>
Selector: app=my-app
Type: NodePort
IP: 10.98.9.115
Port: <unset> 80/TCP
TargetPort: 9001/TCP
NodePort: <unset> 30365/TCP
Endpoints: 172.17.0.3:9001
Session Affinity: None
External Traffic Policy: Cluster
Events: <none>
F:\Udemy\GitRepo\Kubernetes-Tutorial>kubectl logs my-app-deploy-68698d9757-wrs9z
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.3.1.RELEASE)
2021-08-21 13:37:21.046 INFO 1 --- [ main] c.d.d.DockerpublishApplication : Starting DockerpublishApplication v0.0.3 on my-app-deploy-68698d9757-wrs9z with PID 1 (/app.jar started by root in /)
2021-08-21 13:37:21.050 INFO 1 --- [ main] c.d.d.DockerpublishApplication : No active profile set, falling back to default profiles: default
2021-08-21 13:37:22.645 INFO 1 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 9091 (http)
2021-08-21 13:37:22.659 INFO 1 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2021-08-21 13:37:22.660 INFO 1 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.36]
2021-08-21 13:37:22.785 INFO 1 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2021-08-21 13:37:22.785 INFO 1 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1646 ms
2021-08-21 13:37:23.302 INFO 1 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2021-08-21 13:37:23.496 INFO 1 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 9091 (http) with context path ''
2021-08-21 13:37:23.510 INFO 1 --- [ main] c.d.d.DockerpublishApplication : Started DockerpublishApplication in 3.279 seconds (JVM running for 4.077)
F:\Udemy\GitRepo\Kubernetes-Tutorial>
Everything seems to be good, but not working well.
Refused to connect issue comes as below for
minikube service my-app-svc

Answer 1

Your service or application is running on different port as you are getting connection refused.
Spring boot running on the 9091 : Tomcat started on port(s): 9091 (http) with context path ''
But your service is redirecting the traffic TargetPort: 9001/TCP
Your target port should be 9091 instead of 9001
Your will access the application over the node port Ip request, which will reach to the K8s service and be forwarded to the TargetPort: 9091/TCP on which the application is running.