Deploy example application to Kubernetes


In this tutorial, How to deploy example application to Kubernetes.

Deploy example application to Kubernetes

Fronted application

  • load balanced by public ELB
  • read request load balanced to multiple slaves
  • write request to a single master

Backend example Redis

  • single master (write)
  • multi slaves (read)
  • slaves sync continuously from master

Deploy Redis Master and Redis Slave

For Redis Master

kubectl apply -f
kubectl apply -f

For redis slave

kubectl apply -f
kubectl apply -f

Deploy frontend app

kubectl apply -f
kubectl apply -f

The result redis-master, redis-slave and guestbook created

kubectl get replicationcontroller
# The output as below
$ kubectl get replicationcontroller
guestbook      3         3         3       2m13s
redis-master   1         1         1       4m32s
redis-slave    2         2         2       3m10s

Get service and pod

kubectl get pod,service

The output terminal

$ kubectl get pod,service
NAME                     READY   STATUS    RESTARTS   AGE
pod/guestbook-tnc42      1/1     Running   0          2m33s
pod/guestbook-vqgws      1/1     Running   0          2m33s
pod/guestbook-vqnxf      1/1     Running   0          2m33s
pod/redis-master-dp7h7   1/1     Running   0          4m52s
pod/redis-slave-54mt6    1/1     Running   0          3m30s
pod/redis-slave-8g8h4    1/1     Running   0          3m30s

NAME                   TYPE           CLUSTER-IP       EXTERNAL-IP                                                              PORT(S)          AGE
service/guestbook      LoadBalancer   3000:32767/TCP   2m25s
service/kubernetes     ClusterIP       <none>                                                                   443/TCP          52m
service/redis-master   ClusterIP     <none>                                                                   6379/TCP         4m24s
service/redis-slave    ClusterIP   <none>                                                                   6379/TCP         3m25s

Show external ELB DNS

echo $(kubectl  get svc guestbook | awk '{ print $4 }' | tail -1):$(kubectl  get svc guestbook | awk '{ print $5 }' | tail -1 | cut -d ":" -f 13000)

The output terminal

$ echo $(kubectl  get svc guestbook | awk '{ print $4 }' | tail -1):$(kubectl  get svc guestbook | awk '{ print $5 }' | tail -1 | cut -d ":" -f 13000)

Note: ELB is ready in 3-5 minutes


You have to Deploy example application to Kubernetes. we will expose these pods with Ingress the post later. I hope will this your helpful. Thank you for reading the DevopsRoles page! Refer source

About HuuPV

My name is Huu. I love technology and especially Devops Skill such as Docker, vagrant, git so forth. I likes open-sources. so I created site to share the knowledge that I have learned. My Job: IT system administrator. Hobbies: summoners war game, gossip.
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