{"id":3786,"date":"2019-05-13T07:00:07","date_gmt":"2019-05-13T01:30:07","guid":{"rendered":"http:\/\/www.upnxtblog.com\/?p=3786"},"modified":"2020-04-22T18:59:56","modified_gmt":"2020-04-22T13:29:56","slug":"kubesail-get-your-free-kubernetes-cluster","status":"publish","type":"post","link":"https:\/\/www.upnxtblog.com\/index.php\/2019\/05\/13\/kubesail-get-your-free-kubernetes-cluster\/","title":{"rendered":"KubeSail: Get your free Kubernetes Cluster"},"content":{"rendered":"
<\/div>

If you’re looking for free Kubernetes Cluster to play around then KubeSail<\/a> <\/strong>is the right choice, its hosted Kubernetes provider, and offers free managed namespace. With KubeSail you can deploy and host applications easily. In this post, we take look steps on how to deploy applications onto to KubeSail cluster.<\/p>\n

\"KubeSail
Image – KubeSail Logo<\/figcaption><\/figure>\n

Once you have created your account on KubeSail<\/a>, follow the below steps to deploy your applications.<\/p>\n\n

Step #1: Get Kubectl configuration<\/h2>\n

From the account setup tab, get the kubectl<\/code> configuration. To recap on what is kubectl<\/code>, this is the command-line interface through which we can interact with Kubernetes API.<\/p>\n

\"KubeSail
Image – KubeSail Account Page<\/figcaption><\/figure>\n

Copy the contents of kubectl<\/em> configuration and paste to your ~\/.kube\/config<\/code> so that we can use kubectl<\/code> to access our cluster.<\/p>\n

If you’re looking for quickstart on basic understanding of Kubernetes concepts<\/a>, please refer earlier posts for understanding on Kubernetes & how to create<\/a>, deploy & rollout updates<\/a> to the cluster.<\/p>\n

Step # 2: Create deployment<\/h2>\n

Before creating deployment run kubectl get deployment<\/code> to check if there are any deployments.<\/p>\n

\"Run
Image – Run kubectl get deployment to check if there are any deployments<\/figcaption><\/figure>\n

Now that we have cluster ready, we can use kubectl create<\/code> the command to create a new deployment. I already have below deployment.yaml<\/code> ready with the simple web app – Nginx as a container image.<\/p>\n

apiVersion: extensions\/v1beta1\r\nkind: Deployment\r\nmetadata:\r\n name: webapp1\r\nspec:\r\n replicas: 1\r\n template:\r\n  metadata:\r\n   labels:\r\n    app: webapp1\r\n  spec:\r\n   containers:\r\n    - name: webapp1\r\n    image: nginxinc\/nginx-unprivileged\r\n    ports:\r\n    - containerPort: 8080<\/pre>\n
 <\/p>\n
\"KubeSail
Image – Simple web app (nginx as container image) deployment.yaml<\/figcaption><\/figure>\n
\"Use
Image – Use kubectl create command to create deployment<\/figcaption><\/figure>\n
Re-run kubectl get deployment<\/code> to check if deployment has succeeded.<\/p>\n
Congrats! We have just deployed the first application on KubeSail by creating a deployment.<\/em>\u00a0Following is what the command has done for us:<\/p>\n
    \n
  1. Searched for a suitable node where an instance of the application could be run. (currently, we have only 1 available node)<\/em><\/li>\n
  2. Scheduled the webapp1(ngnix)<\/code> application to run on that node.<\/li>\n
  3. Configured the cluster to reschedule the instance on a new node when needed.<\/li>\n<\/ol>\n
    You can also run kubectl describe deployment<\/code> to get more details of the deployment.<\/p>\n
    \"Run
    Image – Run kubectl describe deployment to view more details<\/figcaption><\/figure>\n
    Once the application instances are created, a Kubernetes Deployment Controller continuously monitors those instances. If the Node hosting an instance goes down or deleted, the Deployment controller replaces it.<\/p>\n
    \"kubectl
    Image – kubectl get pods will list the pods and its status<\/figcaption><\/figure>\n
    Some of the useful kubectl<\/code> commands are below.<\/p>\n