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Node to Node Networking Error



Problem:

A Pod in Master can ping to a node in Node, whereas trace path fails. Also, TCP connection between these pods give timeout errors.

We have below nodes

NODES
[root ip-10-20-4-38 network-scripts]# oc get nodes
NAME                       STATUS    AGE
master.hazelcast-ocp.com   Ready     8d
node1.hazelcast-ocp.com    Ready     8d

Master is also a node

SUBNET
[root ip-10-20-4-38 network-scripts]# oc get hostsubnet
NAME                       HOST                       HOST IP          SUBNET
master.hazelcast-ocp.com   master.hazelcast-ocp.com   54.160.17.51     10.128.0.0/23
node1.hazelcast-ocp.com    node1.hazelcast-ocp.com    52.205.214.205   10.129.0.0/23


PODS
[root ip-10-20-4-38 network-scripts]# oc get pods
NAME                            READY     STATUS    RESTARTS   AGE
docker-registry-1-f9lcn         1/1       Running   1          2d
hz-rc-9h10b                     1/1       Running   1          15m
hz-rc-fc64l                     0/1       Running   0          16m
router-1-pfv0f                  1/1       Running   0          3h

[root ip-10-20-4-38 network-scripts]# oc describe pod hz-rc-9h10b
Name: hz-rc-9h10b
Namespace: default
Security Policy: restricted
Start Time: Wed, 26 Apr 2017 07:10:28 -0400
Labels: name=hazelcast-node-hz
Status: Running
IP: 10.129.0.61

[root ip-10-20-4-38 network-scripts]# oc describe pod hz-rc-fc64l
Name: hz-rc-fc64l
Namespace: default
Security Policy: restricted
Start Time: Wed, 26 Apr 2017 07:09:35 -0400
Labels: name=hazelcast-node-hz
Status: Running
IP: 10.128.0.100

From Master Node:
[root ip-10-20-4-38 network-scripts]# ip route get 10.129.0.61
10.129.0.61 dev tun0  src 10.128.0.1
    cache

[root ip-10-20-4-38 network-scripts]# ip a show dev tun0
10: tun0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 qdisc noqueue state UNKNOWN qlen 1000
    link/ether e2:b5:07:a5:10:fd brd ff:ff:ff:ff:ff:ff
    inet 10.128.0.1/23 scope global tun0
       valid_lft forever preferred_lft forever
    inet6 fe80::e0b5:7ff:fea5:10fd/64 scope link
       valid_lft forever preferred_lft forever

[root ip-10-20-4-38 network-scripts]# tracepath 10.129.0.61
 1?: [LOCALHOST]                                         pmtu 8951
 1:  no reply
 2:  no reply
 3:  no reply

Could you please advice?

Thanks in advance


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