Kubernetes - No internet coming in pods

Question

I have been working in Kube.netes for a while and I have a docker image of wildfly application. In the stanalone.xml of the wildfly, the connection to datasources are defined as follows:

<datasource jta="true" jndi-name="java:/DB" pool-name="DB" enabled="true" use-ccm="true">
                    <connection-url>jdbc:mysql://IP:3306/DB_NAME?zeroDateTimeBehavior=convertToNull&amp;autoReconnect=true</connection-url>
                    <driver-class>com.mysql.cj.jdbc.Driver</driver-class>
                    <driver>mysql</driver>
                    <security>
                        <user-name>root</user-name>
                        <password>root</password>
                    </security>
                </datasource>

I have one worker node and 2 replicas of the same pod are running in it. But currently i observed that inte.net is not able to reach my pods. I am trying with

ping google.com

It is not giving response as expected. Already I am using LoadBalancer services to expose the ports.

apiVersion: v1
kind: Service
metadata:
  name: re-demo
  namespace: default
spec:
  type: LoadBalancer 
  selector: 
    app: re-demo
  ports:
  - port: 9575 
    targetPort: 9575
    nodePort: 32756
  externalTrafficPolicy: Cluster 

How can I solve this??

Answer 1

There was mistake when I set up the cluster.

kubeadm init --apiserver-advertise-address 10.128.0.12 --pod-network-cidr=10.244.0.0/16

cidr address we should give just like what we have in our kube_flannel.yaml file. If you want to change the ip adress in the cidr, then first make changes in the kube_flannel.yaml file.

Otherwise, it will result in the no inte.net availability of the pods. And we need to use the hostNetwork =true property for inte.net connection, but which turn prevents us some running more than one replica of same pod in the same node.