Step 1: Update Your System

Before starting, ensure your Rocky Linux system is up to date by running the following commands:

sudo dnf update -y

This ensures your system is ready for the WildFly and Nginx installation, whether you are deploying it locally or on a VPS Windows Servers platform.

Step 2: Install Java

WildFly requires Java to run. Install OpenJDK 11, which is supported by WildFly, using this command:

sudo dnf install java-11-openjdk-devel -y

Verify the installation:

java -version

This command should return the installed version of Java.

Step 3: Download and Install WildFly

Download the latest version of WildFly using the following command:

cd /opt
sudo wget https://github.com/wildfly/wildfly/releases/download/26.1.1.Final/wildfly-26.1.1.Final.tar.gz
            

Extract the downloaded file:

sudo tar -xvzf wildfly-26.1.1.Final.tar.gz

Move the extracted folder to a more suitable location:

sudo mv wildfly-26.1.1.Final /opt/wildfly

Step 4: Set Up WildFly as a Service

Create a new service file for WildFly to run as a systemd service:

sudo nano /etc/systemd/system/wildfly.service

Add the following content to the file:

[Unit]
Description=WildFly Application Server
After=network.target

[Service]
User=root
ExecStart=/opt/wildfly/bin/standalone.sh -b=0.0.0.0
StandardOutput=null

[Install]
WantedBy=multi-user.target
            

Save and exit the file.

Reload systemd to apply the changes:

sudo systemctl daemon-reload

Start and enable the WildFly service:

sudo systemctl start wildfly
sudo systemctl enable wildfly

Step 5: Install and Configure Nginx

Install Nginx using the following command:

sudo dnf install nginx -y

Create a new Nginx configuration file for the reverse proxy:

sudo nano /etc/nginx/conf.d/wildfly.conf

Add the following content to the file:

server {
    listen 80;
    server_name your_domain_or_IP;

    location / {
        proxy_pass http://localhost:8080;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
}
            

Replace your_domain_or_IP with your domain name or server IP address.

Test the Nginx configuration:

sudo nginx -t

If the configuration test passes, start and enable Nginx:

sudo systemctl start nginx
sudo systemctl enable nginx

Step 6: Allow Firewall Rules

Update your firewall to allow HTTP and WildFly connections:

sudo firewall-cmd --permanent --add-service=http
sudo firewall-cmd --permanent --add-port=8080/tcp
sudo firewall-cmd --reload
            

Step 7: Access the WildFly Application

You can now access your WildFly application through Nginx by navigating to:

http://your_domain_or_IP

This will serve your WildFly application through Nginx as a reverse proxy.