My cluster includes: 1 master and 2 worker nodes. I created a pod using deployment yaml. The pod running successfully on the worker node 1, I can ping the pod's ip on worker nodes but I can't ping the ip address of the pod on the master. I tried to disable firewarlld, restart docker but not successfully. Please see my commands

[root@k8s-master ~]# kubectl get pods -o wide | grep qldv
qldv-liberty-8499dfcf67-55njr   1/1     Running             0          6m42s   10.40.0.2    worker-node1   <none>           <none>

[root@k8s-master ~]# ping 10.40.0.2
PING 10.40.0.2 (10.40.0.2) 56(84) bytes of data.
From 10.32.0.1 icmp_seq=1 Destination Host Unreachable
From 10.32.0.1 icmp_seq=2 Destination Host Unreachable
From 10.32.0.1 icmp_seq=3 Destination Host Unreachable

[root@k8s-master ~]# kubectl get nodes
NAME           STATUS   ROLES    AGE   VERSION
k8s-master     Ready    master   43d   v1.15.0
worker-node1   Ready    <none>   42d   v1.15.0
worker-node2   Ready    <none>   42d   v1.15.0


[root@k8s-master ~]# kubectl describe pod qldv-liberty-8499dfcf67-55njr
Name:           qldv-liberty-8499dfcf67-55njr
Namespace:      default
Priority:       0
Node:           worker-node1/192.168.142.130
Start Time:     Sat, 17 Aug 2019 20:05:57 +0700
Labels:         app=qldv-liberty
                pod-template-hash=8499dfcf67
Annotations:    <none>
Status:         Running
IP:             10.40.0.2
Controlled By:  ReplicaSet/qldv-liberty-8499dfcf67
Containers:
  qldv-liberty:
    Container ID:   docker://03636fb62d4cca0e41f4ad9f5a94b50cf371089ab5a0813ed802d02f4ac4b07a
    Image:          qldv-liberty
    Image ID:       docker://sha256:bd0d7ce1c07da5b9d398131b17da7a6931a9b7ae0673d19a6ec0c409416afc69
    Port:           9080/TCP
    Host Port:      0/TCP
    State:          Running
      Started:      Sat, 17 Aug 2019 20:06:23 +0700
    Ready:          True
    Restart Count:  0
    Environment:    <none>
    Mounts:
      /var/run/secrets/kubernetes.io/serviceaccount from default-token-vtphv (ro)
Conditions:
  Type              Status
  Initialized       True 
  Ready             True 
  ContainersReady   True 
  PodScheduled      True 
Volumes:
  default-token-vtphv:
    Type:        Secret (a volume populated by a Secret)
    SecretName:  default-token-vtphv
    Optional:    false
QoS Class:       BestEffort
Node-Selectors:  <none>
Tolerations:     node.kubernetes.io/not-ready:NoExecute for 300s
                 node.kubernetes.io/unreachable:NoExecute for 300s
Events:
  Type    Reason     Age   From                   Message
  ----    ------     ----  ----                   -------
  Normal  Scheduled  119s  default-scheduler      Successfully assigned default/qldv-liberty-8499dfcf67-55njr to worker-node1
  Normal  Pulled     96s   kubelet, worker-node1  Container image "qldv-liberty" already present on machine
  Normal  Created    95s   kubelet, worker-node1  Created container qldv-liberty
  Normal  Started    91s   kubelet, worker-node1  Started container qldv-liberty

I have another app, it also has a pod that running on the worker node 1, and I can ping the pod's ip from master. But I don't know why it is impossible with above case. Please help me !