Comprehensive Guide to Install DirectAdmin on AlmaLinux, Rocky Linux, and Ubuntu 

Requirements

Before beginning the installation, ensure you have: 

• A fresh, minimal install of AlmaLinux, Rocky Linux, or Ubuntu. 
• A valid DirectAdmin license.
• Root access to the server. 
• At least 1GB of RAM.

Server running DirectAdmin, it is recommended to set up the following partitions: /boot with 500 MB for boot files, swap with a size equal to twice the RAM but not exceeding 16 GB, /tmp with 1 GB for temporary files, and / (root) with 6 – 10 GB for the operating system. The /var partition should be allocated 8 – 20 GB to handle logs, emails, and databases, while /usr needs 5 – 12+ GB for user-installed software and DirectAdmin data. The remaining disk space, roughly 80%, should be allocated to /home for user data and websites. It’s also advisable to mount /home with the nosuid option in /etc/fstab for enhanced security. 

Step 1: Update Your Server

First, ensure your server is up-to-date.

For AlmaLinux and Rocky Linux: 

sudo yum update -y 

For Ubuntu: 

sudo apt update && sudo apt upgrade -y 

Step 2: Set Hostname

DirectAdmin requires a fully qualified domain name (FQDN) as the hostname. 

sudo hostnamectl set-hostname server.example.com

Replace `server.example.com` with your desired hostname. 

Step 3: Install Required Packages 

Install necessary dependencies for DirectAdmin.

For AlmaLinux and Rocky Linux: 

sudo yum install wget perl curl -y

For Ubuntu: 

sudo apt install wget perl curl -y

Step 4: Download DirectAdmin Installation Script 

Navigate to the `/usr/local` directory and download the DirectAdmin setup script. 
cd /usr/local

Step 5: Run DirectAdmin Installation Script 

Run the setup script to begin the DirectAdmin installation process. 

bash <(curl -fsSL https://download.directadmin.com/setup.sh) 'Provided license key here'

Step 6: Configure Firewall (Optional)

If you are using a firewall, ensure the necessary ports for DirectAdmin are open.

For AlmaLinux and Rocky Linux (using firewalld): 

sudo firewall-cmd --permanent --add-port=2222/tcp 
sudo firewall-cmd --permanent --add-port=80/tcp 
sudo firewall-cmd --permanent --add-port=443/tcp 
sudo firewall-cmd --reload

For Ubuntu (using ufw):

sudo ufw allow 2222/tcp 
sudo ufw allow 80/tcp 
sudo ufw allow 443/tcp 
sudo ufw reload

Step 7: Access DirectAdmin

Once the installation is complete, DirectAdmin should be running. You can access the DirectAdmin control panel via your web browser. 
Navigate to `https://your-server-hostname:2222`. 

Step 8: Post-Installation Configuration 

After logging in, you may want to configure additional settings, such as: 

• Setting up your domains and user accounts. 
• Configuring email and DNS settings. 
• Installing any additional software or services required for your hosting environment. 

Troubleshooting Tips 

• icense Issues: Ensure your DirectAdmin license is correct and active. 
• Firewall/Network Issues: Verify that your server’s firewall and network settings allow access to the necessary ports. 
• Server Resources: Ensure your server has enough resources (RAM, CPU) to run DirectAdmin efficiently.

Conclusion

This guide provides a step-by-step process to install DirectAdmin on AlmaLinux, Rocky Linux, and Ubuntu. By following these steps, you should have a functional DirectAdmin installation ready to manage your hosting environment. 
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