Deployment to Kubernetes cluster with error resolving service hostname

I have forked the Dockerfile from another repository and customize the conf file with the changes in my current forked version: https://github.com/mengjiann/docker-SQS-local.

I have deployed the docker image to my local kubernetes cluster with the following deployment yaml file.

apiVersion: apps/v1
kind: Deployment
metadata:
  name: mock-sqs
  labels:
    app: mock-sqs
spec:
  replicas: 1
  selector:
    matchLabels:
      app: mock-sqs
  template:
    metadata:
      labels:
        app: mock-sqs
    spec:
      containers:
      - name: mock-sqs
        image: aws-sqs-mock:latest
        imagePullPolicy: Never
        ports:
        - containerPort: 9324
          name: sqs-port
        resources:
          requests:
            cpu: 0.25
          limits:
            cpu: 1
      hostNetwork: true
---
apiVersion: v1
kind: Service
metadata:
  name: mock-sqs
  labels:
    app: mock-sqs
spec:
  type: NodePort
  ports:
  - port: 9324
    protocol: TCP
    nodePort: 30007
  selector:
    app: mock-sqs

But, when Im accessing the mock SQS using kubernetes service hostname: http://mock-sqs:9324 using AWS Java Sdk, it throws me the following error:

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'simpleMessageListenerContainer' defined in class path resource [com/sph/common/service/credit/app/config/AwsSqsConfig.class]: Invocation of init method failed; nested exception is com.amazonaws.SdkClientException: Unable to execute HTTP request: mock-sqs
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1762) ~[spring-beans-5.1.5.RELEASE.jar!/:5.1.5.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593) ~[spring-beans-5.1.5.RELEASE.jar!/:5.1.5.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515) ~[spring-beans-5.1.5.RELEASE.jar!/:5.1.5.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) ~[spring-beans-5.1.5.RELEASE.jar!/:5.1.5.RELEASE]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.5.RELEASE.jar!/:5.1.5.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) ~[spring-beans-5.1.5.RELEASE.jar!/:5.1.5.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.1.5.RELEASE.jar!/:5.1.5.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:849) ~[spring-beans-5.1.5.RELEASE.jar!/:5.1.5.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:877) ~[spring-context-5.1.5.RELEASE.jar!/:5.1.5.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) ~[spring-context-5.1.5.RELEASE.jar!/:5.1.5.RELEASE]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142) ~[spring-boot-2.1.4.RELEASE.jar!/:2.1.4.RELEASE]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) [spring-boot-2.1.4.RELEASE.jar!/:2.1.4.RELEASE]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.1.4.RELEASE.jar!/:2.1.4.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) [spring-boot-2.1.4.RELEASE.jar!/:2.1.4.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260) [spring-boot-2.1.4.RELEASE.jar!/:2.1.4.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248) [spring-boot-2.1.4.RELEASE.jar!/:2.1.4.RELEASE]
	at com.sph.common.service.credit.CreditServiceApplication.main(CreditServiceApplication.java:10) [classes!/:0.0.1-SNAPSHOT]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_111-internal]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_111-internal]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_111-internal]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_111-internal]
	at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48) [credit-service-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
	at org.springframework.boot.loader.Launcher.launch(Launcher.java:87) [credit-service-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
	at org.springframework.boot.loader.Launcher.launch(Launcher.java:50) [credit-service-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
	at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51) [credit-service-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
Caused by: com.amazonaws.SdkClientException: Unable to execute HTTP request: mock-sqs
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleRetryableException(AmazonHttpClient.java:1175) ~[aws-java-sdk-core-1.11.553.jar!/:na]
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1121) ~[aws-java-sdk-core-1.11.553.jar!/:na]
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:770) ~[aws-java-sdk-core-1.11.553.jar!/:na]
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:744) ~[aws-java-sdk-core-1.11.553.jar!/:na]
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:726) ~[aws-java-sdk-core-1.11.553.jar!/:na]
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:686) ~[aws-java-sdk-core-1.11.553.jar!/:na]
	at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:668) ~[aws-java-sdk-core-1.11.553.jar!/:na]

But, when I access directly using the K8s service cluster ip: http://10.101.230.241:9324, the mock SQS is working fine.

Anyone has any ideas?

Start with the deployment and Service YAML in the issue, then compare the AWS Java SDK request using http://mock-sqs:9324 with the working cluster-IP URL. Reproduce the hostname failure in the described local Kubernetes setup and determine the project-side configuration or documentation change, if any, needed for hostname access to work.