[osboxes@kubemaster pods]$ kubectl get pods -o wide
NAME      READY     STATUS    RESTARTS   AGE       IP            NODE
busybox   1/1       Running   0          3m        172.17.60.3   192.168.6.103
mongodb   1/1       Running   0          21m       172.17.60.2   192.168.6.103
[osboxes@kubemaster pods]$ kubectl get services -o wide
NAME           CLUSTER-IP       EXTERNAL-IP   PORT(S)     AGE           SELECTOR
kubernetes     10.254.0.1       <none>        443/TCP     17d       <none>
mongoservice   10.254.244.175   <none>        27017/TCP   47m       name=mongodb


[osboxes@kubemaster pods]$ kubectl describe svc mongoservice
Name:           mongoservice
Namespace:      default
Labels:         name=mongoservice
Selector:       name=mongodb
Type:           ClusterIP
IP:         10.254.244.175
Port:           <unset> 27017/TCP
Endpoints:      172.17.60.2:27017
Session Affinity:   None

8707a465771b        busybox                                                      "sh"                  9 minutes ago Up 9minutes                            k8s_busybox.53e510d6_busybox_default_c4892314-cde3-11e6-8a53-08002700df07_492b1a89
bea9de4e05cf        registry.access.redhat.com/rhel7/pod-infrastructure:latest   "/pod"                   9 minutes ago       Up 9 minutes                            k8s_POD.ae8ee9ac_busybox_default_c4892314-cde3-11e6-8a53-08002700df07_2bffae46
eaff8dc1a360        mongo                                                        "/entrypoint.sh mongo"   28 minutes ago      Up 28 minutes                           k8s_mongodb.d1eca71a_mongodb_default_240cd411-cde1-11e6-8a53-08002700df07_ef5a8bbe
6a90b06cd434        registry.access.redhat.com/rhel7/pod-infrastructure:latest   "/pod"                   28 minutes ago      Up 28 minutes                           k8s_POD.7ce0ec0_mongodb_default_240cd411-cde1-11e6-8a53-08002700df07_11074b20

[osboxes@kubemaster pods]$ sudo kubectl run -i --tty busybox --image=busybox --generator="run-pod/v1"
Waiting for pod default/busybox to be running, status is Pending, pod ready: false
Waiting for pod default/busybox to be running, status is Pending, pod ready: false
If you don't see a command prompt, try pressing enter.
Error attaching, falling back to logs: dial tcp 192.168.6.103:10250: getsockopt: connection refused
Error from server: Get https://192.168.6.103:10250/containerLogs/default/busybox/busybox: dial tcp 192.168.6.103:10250: getsockopt: connection refused


[osboxes@kubemaster pods]$ curl 172.17.60.2:27017
curl: (7) Failed connect to 172.17.60.2:27017; No route to host
[osboxes@kubemaster pods]$ curl 10.254.244.175:27017
curl: (7) Failed connect to 10.254.244.175:27017; Connection timed out

[osboxes@kubemaster pods]$ kubectl exec -ti mongodb -c k8s_mongodb.d1eca71a_mongodb_default_240cd411-cde1-11e6-8a53-08002700df07_ef5a8bbe sh
Error from server: container k8s_mongodb.d1eca71a_mongodb_default_240cd411-cde1-11e6-8a53-08002700df07_ef5a8bbe is not valid for pod mongodb
[osboxes@kubemaster pods]$ kubectl exec -ti mongodb -c k8s_POD.7ce0ec0_mongodb_default_240cd411-cde1-11e6-8a53-08002700df07_11074b20 sh
Error from server: container k8s_POD.7ce0ec0_mongodb_default_240cd411-cde1-11e6-8a53-08002700df07_11074b20 is not valid for pod mongodb
[osboxes@kubemaster pods]$ kubectl exec -ti mongodb  sh
Error from server: dial tcp 192.168.6.103:10250: getsockopt: connection refused

[osboxes@kubemaster pods]$ kubectl describe svc mongoservice
Name:           mongoservice
Namespace:      default
Labels:         name=mongoservice
Selector:       name=mongodb
Type:           ClusterIP
IP:         10.254.244.175
Port:           <unset> 27017/TCP
Endpoints:      172.17.60.2:27017
Session Affinity:   None

[osboxes@kubemaster pods]$ curl 172.17.60.2:27017

curl: (7) Failed connect to 172.17.60.2:27017; No route to host

kubectl expose service mongoservice --port=27017 --type=NodePort

Name:           mongo-4025718836
Namespace:      default
Labels:         pod-template-hash=4025718836
            run=mongo
Selector:       pod-template-hash=4025718836,run=mongo
Type:           NodePort
IP:         10.0.0.11
Port:           <unset> 27017/TCP
NodePort:       <unset> 32076/TCP
Endpoints:      172.17.0.9:27017
Session Affinity:   None

curl NODE:32076
It looks like you are trying to access MongoDB over HTTP on the native driver port.

#KUBELET_ADDRESS="--address=127.0.0.1"
KUBELET_ADDRESS="--address=0.0.0.0"

curl 10.254.39.156:27017
It looks like you are trying to access MongoDB over HTTP on the native driver port.

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.6.1     0.0.0.0         UG    100    0        0 enp0s3
172.17.0.0      0.0.0.0         255.255.0.0     U     0      0        0 docker0
192.168.6.0     0.0.0.0         255.255.255.0   U     100    0        0 enp0s3
192.168.122.0   0.0.0.0         255.255.255.0   U     0      0        0 virbr0

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.6.1     0.0.0.0         UG    100    0        0 enp0s3
172.17.0.0      0.0.0.0         255.255.0.0     U     0      0        0 flannel0
172.17.100.0    0.0.0.0         255.255.255.0   U     0      0        0 docker0
192.168.6.0     0.0.0.0         255.255.255.0   U     100    0        0 enp0s3
192.168.122.0   0.0.0.0         255.255.255.0   U     0      0        0 virbr0

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.6.1     0.0.0.0         UG    100    0        0 enp0s3
0.0.0.0         10.0.3.2        0.0.0.0         UG    101    0        0 enp0s8
10.0.3.0        0.0.0.0         255.255.255.0   U     100    0        0 enp0s8
172.17.0.0      0.0.0.0         255.255.0.0     U     0      0        0 flannel0
172.17.95.0     0.0.0.0         255.255.255.0   U     0      0        0 docker0
192.168.6.0     0.0.0.0         255.255.255.0   U     100    0        0 enp0s3