https://github.com/ertugrulsertaslan/k8s-demo
This guide will walk you through the steps to run a Node.js application in a Kubernetes environment using Minikube.
https://github.com/ertugrulsertaslan/k8s-demo
docker express-js kubernetes minikube nodejs
Last synced: 2 months ago
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This guide will walk you through the steps to run a Node.js application in a Kubernetes environment using Minikube.
- Host: GitHub
- URL: https://github.com/ertugrulsertaslan/k8s-demo
- Owner: ertugrulsertaslan
- Created: 2024-12-03T11:34:59.000Z (6 months ago)
- Default Branch: main
- Last Pushed: 2024-12-03T14:20:25.000Z (6 months ago)
- Last Synced: 2025-01-31T15:16:56.394Z (4 months ago)
- Topics: docker, express-js, kubernetes, minikube, nodejs
- Language: Dockerfile
- Homepage:
- Size: 11.7 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# Kubernetes Demo 🐳☸⚓
This guide will walk you through the steps to run a Node.js application in a Kubernetes environment using Minikube.
## Prerequisites 📋
- **Minikube** (Local Kubernetes development environment) 🖥️
- **Kubectl** (Kubernetes command-line tool) ☸
- **Docker** (For building container images) 🐳
- **Node.js** (For the application) 🟩
---
## Installation 💻
#### [Minikube Installation](tutorials/InstallMinikube.md) 📥
#### [Docker Installation](tutorials/InstallDocker.md) 📥
#### [Node Installation](tutorials/InstallNode.md) 📥
## 1.Creating Docker Image and Uploading to Docker Hub 🌐
### 1.1 Docker Login 🔑
To push images to Docker Hub, you first need to log in to Docker Hub. Use the following command to log in:
```bash
docker login
```
When you run this command, you will be prompted to enter your username and password. If you don't have a Docker Hub account, you can create a new one [here](https://hub.docker.com).🌐
### 1.2 Creating the Docker Image 🐳
Now we will use the following command to create the Docker image:
```bash
docker build -t /nodejs-k8s-demo:latest .
In this command, with your own Docker Hub username.
```
### 1.3 Docker Hub A Push ⬆️
To upload the Docker image to Docker Hub, use this command:
```bash
docker push /nodejs-k8s-demo:latest
```
## 2. Kubernetes Deployment and Service Configuration 🛠️
We will create the necessary Deployment and Service YAML files to deploy your application to Kubernetes.
### 2.1 Deployment YAML File 📄
Create a file named `deployment.yaml` and add the following content:
```yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: nodejs-deployment
spec:
replicas: 2 # create 2 replica
selector:
matchLabels:
app: nodejs
template:
metadata:
labels:
app: nodejs
spec:
containers:
- name: nodejs
image: /nodejs-k8s-demo:latest # Your Docker Hub image
ports:
- containerPort: 8080
```
### 2.2 Service YAML File ⚙️
Create a file named `service.yaml` and add the following content:
```yaml
apiVersion: v1
kind: Service
metadata:
name: nodejs-service
spec:
selector:
app: nodejs # This specifies which pods the service will route traffic to
ports:
- protocol: TCP
port: 80 # The external port exposed to the outside
targetPort: 8080 # The application port inside the pod
type: NodePort # We are using NodePort for Minikube
```
## 3. Deploying the Application to Kubernetes 🚀
Follow the steps below to deploy your application to the Kubernetes environment:
### 3.1 Apply Deployment and Service 🖧
Run the following commands to apply the Deployment and Service in your Kubernetes environment:
```bash
kubectl apply -f deployment.yaml
kubectl apply -f service.yaml
```
### 3.2 Check Pods and Service Status 🔍
To check the status of your Kubernetes pods, run the following command:
```bash
kubectl get pods
```
To check your service, run this command:
```bash
kubectl get services
```
If you're using Minikube, you can get the service URL by running the following command:
```bash
minikube service nodejs-service --url
```