{"id":12397,"date":"2020-03-19T03:02:35","date_gmt":"2020-03-19T03:02:35","guid":{"rendered":"https:\/\/www.devopsschool.com\/blog\/?p=12397"},"modified":"2021-11-12T06:29:08","modified_gmt":"2021-11-12T06:29:08","slug":"minikube-exposing-kubernetes-workload-from-ec2-instance","status":"publish","type":"post","link":"https:\/\/www.devopsschool.com\/blog\/minikube-exposing-kubernetes-workload-from-ec2-instance\/","title":{"rendered":"Minikube Exposing Kubernetes workload from EC2 Instance."},"content":{"rendered":"\n

Part 1 – Step by step guide on MINIKUBE installation on EC2 instance can be found here<\/a>, <\/p>\n\n\n\n

Folks in this tutorial we will try to learn how to expose a running pod from the kubernetes cluster on Ec2 instance to outside world.<\/p>\n\n\n\n

Lets get started, we are continuing where we stopped in the first article.<\/p>\n\n\n\n

Step 1. Check the status of your minikube vm.<\/p>\n\n\n\n

minikube status<\/pre>\n\n\n\n
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Step 2. Lets start a node app from the official documentation of k8’s.<\/p>\n\n\n\n
kubectl create deployment hello-node --image=gcr.io\/hello-minikube-zero-install\/hello-node<\/code><\/pre>\n\n\n\n
This will start, a node app which on hitting port 8080, will say – Hello worlds!!. <\/p>\n\n\n\n
Index file for this : <\/p>\n\n\n
var<\/span> http = require<\/span>('http'<\/span>);\n\nvar<\/span> handleRequest = function<\/span>(request, response<\/span>) <\/span>{\n  console<\/span>.log('Received request for URL: '<\/span> + request.url);\n  response.writeHead(200<\/span>);\n  response.end('Hello World!'<\/span>);\n};\nvar<\/span> www = http.createServer(handleRequest);\nwww.listen(8080<\/span>);<\/code><\/span>Code language:<\/span> JavaScript<\/span> (<\/span>javascript<\/span>)<\/span><\/small><\/pre>\n\n\n
Dockerfile: <\/p>\n\n\n
FROM node:6.14<\/span>.2<\/span>\nEXPOSE 8080<\/span>\nCOPY server.js .\nCMD [ \"node\"<\/span>, \"server.js\"<\/span> ] \/\/ you can type index.js file or rename above file as server.js both will workout<\/span><\/code><\/span>Code language:<\/span> JavaScript<\/span> (<\/span>javascript<\/span>)<\/span><\/small><\/pre>\n\n\n
\"\"<\/figure>\n\n\n\n
Step 3. List out the running deployments, kubectl get deployments<\/strong><\/p>\n\n\n\n
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Step 4. Now we should expose this service to outside internet, but before that we should expose this to host level as well.<\/p>\n\n\n\n
kubectl expose deployment hello-node --type=LoadBalancer --port=8080<\/code><\/pre>\n\n\n\n
\"\"<\/figure>\n\n\n\n
Step 5. So we can see that hello node is exposed on port number, 31170 of host machine which is being tunnelled to 8080 of the running pod.<\/p>\n\n\n\n
try doing curl on localhost:31170 you will greeted properly!! \ud83d\ude42<\/p>\n\n\n\n
Step 6. Now lets goto EC2 console, open the SG for the instance and white list port 31170.<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
Hit save and goto : <ec2-public-ip>:31170 link<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
Voila !!! You have successfully expose a service from Kubernetes cluster to out side world, give yourself a pat on the back. Keep reading \ud83d\ude42<\/p>\n\n\n\n
Gaurav Bajpai<\/a><\/p>\n\n\n\n
Note: We are running classroom batches on all of the DevOps toolset, feel free to enquire about them ! locations covered Delhi, Hyderabad, Bangalore and Chennai.<\/em><\/strong><\/p>\n\n\n