https://github.com/swapno963/nodejs-deployment
In this project I have delopyed node.js and mysql with systemd
https://github.com/swapno963/nodejs-deployment
Last synced: about 2 months ago
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In this project I have delopyed node.js and mysql with systemd
- Host: GitHub
- URL: https://github.com/swapno963/nodejs-deployment
- Owner: Swapno963
- Created: 2025-03-29T02:44:04.000Z (2 months ago)
- Default Branch: main
- Last Pushed: 2025-03-29T02:54:14.000Z (2 months ago)
- Last Synced: 2025-03-29T03:27:51.732Z (2 months ago)
- Language: Shell
- Size: 0 Bytes
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: readme.md
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README
# Node.js Application Deployment Guide (DevOps)
## 1. System User and Directory Setup
### 1.1 Create a System User
For security reasons, create a non-login system user to run the Node.js application.
**Command:**
```bash
sudo useradd -r -m -d /opt/app -s /usr/sbin/nologin nodejs
```
### 1.2 Set Permissions for the Application Directory
Ensure the `nodejs` user has the correct ownership and permissions to access and run the application.
**Commands:**
```bash
sudo chown -R nodejs:nodejs /opt/app
sudo chmod -R 750 /opt/app
```
## 2. Deploy Application and Dependencies
### 2.1 Copy Project Files to `/opt/app/`
Move the necessary directories for the application, scripts, and systemd services.
**Commands:**
```bash
sudo cp -a /root/code/Application /root/code/Scripts /root/code/Systemd /opt/app
cd /opt/app
sudo chown -R nodejs:nodejs /opt/app
```
### 2.2 Ensure Scripts Have Execution Permissions
Grant execution rights to all `.sh` scripts inside `/opt/app/Scripts/`.
**Command:**
```bash
sudo chmod +x /opt/app/Scripts/*.sh
```
### 2.3 Run Dependency Setup Script
Run the script to verify and install Node.js, MySQL, and npm dependencies.
**Command:**
```bash
sudo /opt/app/Scripts/ensure_dependencies.sh
```
### 2.4 Initialize the Database
Run the script to create the `practice_app` database and insert test user data.
**Command:**
```bash
sudo /opt/app/Scripts/setup_add_data.sh
```
## 3. Configure and Enable systemd Services
### 3.1 Copy systemd Service Files
Move the MySQL and Node.js systemd unit files to `/etc/systemd/system/`.
**Commands:**
```bash
cd /opt/app/Systemd
sudo cp mysql.service node.service /etc/systemd/system/
```
### 3.2 Reload systemd to Apply Changes
**Command:**
```bash
sudo systemctl daemon-reload
```
### 3.3 Manage MySQL Service
Ensure MySQL is enabled and running.
**Commands:**
```bash
sudo systemctl enable mysql
sudo systemctl start mysql
```
### 3.4 Install Node.js Dependencies
Before starting the Node.js application, install its dependencies.
**Commands:**
```bash
cd /opt/app/Application
npm install --omit=dev
```
## 4. Start and Verify Node.js Application
### 4.1 Enable and Start Node.js Service
**Commands:**
```bash
sudo systemctl enable node
sudo systemctl start node
```
### 4.2 Verify Service Status
Check if the Node.js service is running correctly.
**Command:**
```bash
sudo systemctl status node
```
## 5. Validate Node.js Endpoints
The application exposes the following REST API endpoints:
- **Fetch all users**: `/users`
```bash
curl -X GET http://localhost:3000/users
```
- **Health Check**: `/health`
```bash
curl -X GET http://localhost:3000/health
```
## 6. Test Auto-Restart Functionality
### 6.1 Find Running Node.js Process
Find the process ID (PID) of the running Node.js application.
**Command:**
```bash
ps aux | grep "/Application/server.js"
```
### 6.2 Kill the Process
To check whether systemd automatically restarts the Node.js service, kill the process using its PID.
**Command:**
```bash
sudo kill -9
```