How can I access from network newly deployed pod in kubernetes? - docker

Question

I am a newbie in kubernetes and i know i am missing something small but cannot see what.
I am creating a pod with file: kubectl create -f mysql.yaml
apiVersion: v1
kind: Pod
metadata:
name: mysql
labels:
name: mysql
spec:
containers:
- resources:
limits :
cpu: 2
image: mysql
name: mysql
env:
- name: MYSQL_ROOT_PASSWORD
# change this
value: TestingDB1
ports:
- containerPort: 3306
name: mysql
and a service with: kubectl create -f mysql_service.yaml
apiVersion: v1
kind: Service
metadata:
labels:
name: mysql
name: mysql
spec:
externalIPs:
- 10.19.13.127
ports:
- port: 3306
selector:
name: mysql
Output of "kubectl version"
Client Version: version.Info{Major:"1", Minor:"5", GitVersion:"v1.5.2", GitCommit:"d33fd89e399396658aed4e48dfe7d5d8d50ac6e8", GitTreeState:"clean", BuildDate:"2017-05-26T17:08:24Z", GoVersion:"go1.7.4", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"5", GitVersion:"v1.5.2", GitCommit:"d33fd89e399396658aed4e48dfe7d5d8d50ac6e8", GitTreeState:"clean", BuildDate:"2017-05-26T17:08:24Z", GoVersion:"go1.7.4", Compiler:"gc", Platform:"linux/amd64"}
Output of "kubectl cluster-info"
Kubernetes master is running at http://localhost:8080
Output of "kubectl get pods"
NAME READY STATUS RESTARTS AGE
mysql 1/1 Running 0 20m
Output of "kubectl get svc"
NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes 10.254.0.1 <none> 443/TCP 18h
mysql 10.254.129.206 10.19.13.127 3306/TCP 1h
Output of "kubectl get no"
NAME STATUS AGE
10.19.13.127 Ready 19h
Output of "docker ps"
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
74ea1fb2b383 mysql "docker-entrypoint.sh" 3 minutes ago Up 3 minutes k8s_mysql.ae7893ad_mysql_default_e58d1c09-4a8e-11e7-9baf-fa163ee3f5d9_793d8d7c
I can see the pod is being created normally. Even when i connect to the container I am able to log in to mysql with credentials.
My question is:
How can i access/expose port running on my kubernetes node from my network ? For example I want to do a telnet from my PC to the kubernetes node where the mysql pod is running.
Thank you !

Answer 1

Below command verifies that the Redis server is running in the pod and listening on which port (generally it run on 6379 port) :
kubectl get pods redis-master --template='{{(index (index .spec.containers 0).ports 0).containerPort}}{{"\n"}}'
Output : 6739

Answer 2

Following command gives you port a pod listening on, so you can create route or port forwarding to access the service
kubectl get pod <pod_name> -o "go-template={{(index (index .spec.containers 0).ports 0).containerPort}}