Harvester Setup and Configuration

Harvester is an open-source hyperconverged infrastructure (HCI) software that provides a powerful and easy-to-use platform for deploying and managing virtual machines (VMs). Built on Kubernetes, it simplifies the process of setting up and maintaining a virtualized environment. 

The following steps will guide you in setting up Harvester 

Download the Harvester ISO from the website.

Make a bootable USB from the ISO with any of the following tools

• https://etcher.balena.io/
• https://rufus.ie/en/

Once the machine has been booted from USB we will get the following Page

Once booted, follow the steps to complete the installatoon

1. Cluster Creation:
• Select "Create a new Harvester Cluster"
2. Disk Selection:
• Use the right arrow key to navigate and choose a disk for Harvester's system.
• Select a separate disk dedicated to storing virtual machine data.
3. Host Configuration:
• Enter a hostname for your Harvester node.
4. Network Setup:
• Use the right arrow key to select your network interface card (NIC).
• Choose between DHCP or static IP configuration.
• If using Static, provide the necessary network details (IP address, subnet mask, gateway).
• Configure DNS server addresses.
5. VIP Configuration:
• Use the right arrow key to navigate, Choose between DHCP or static IP for the Virtual IP (VIP) address.
• If using Static, enter the desired VIP.
6. Cluster Token:
• Set a cluster token. This is crucial for adding more nodes to your cluster later.
7. Password and SSH:
• Set a strong password for accessing the node (default SSH user is 'rancher').
8. NTP Servers:
• Configure NTP servers (defaults to 0.suse.pool.ntp.org) to ensure time synchronization across all nodes. Use commas to separate multiple server addresses.
9. Optional Configurations:
• HTTP Proxy: If needed, provide the proxy URL.
• SSH Keys: Import SSH keys by providing their HTTP URL (e.g., GitHub public keys).
• Harvester Configuration: If you have a specific configuration file, enter its HTTP URL.
10. Review and Install:
• Review all the settings you've configured.
• Confirm to start the installation process. This might take a few minutes.
11. Access Harvester:
• After the node restarts, the Harvester console will show the management URL and node status.
• Access the web interface using the provided URL (defaults to https://your-virtual-ip).
• Use F12 to switch to the shell if needed, and type exit to return to the console.

Latest Steps can be found @  https://github.com/harvester/harvester

Enabling the MsSQL Extension in cPanel/WHM: A Manual Installation Guide

While cPanel/WHM offers a wide range of PHP extensions out of the box, the MsSQL extension for connecting to Microsoft SQL Server databases requires a bit of manual effort. In this guide, we'll walk you through the step-by-step process of installing and configuring the MsSQL extension on your cPanel server.

Prerequisites:

• Root Access: You'll need root privileges on your server to perform these steps.
• Source Code: Instead of using RPM packages (which can lead to dependency issues), we'll compile the necessary components from source code.

Installing Required Modules

1. unixODBC:

   • Download: Get the source code from the official unixODBC website.
   • Extract: tar -xvf unixODBC-X.X.X.tar.gz (replace X.X.X with the version you downloaded).
   • Configure and Install:

     cd unixODBC-X.X.X
     ./configure --prefix=/usr/local --enable-gui=no
     make
     make install
     

     FreeTDS:
2. • Download: Download FreeTDS version 0.82 (or a compatible older version) from ftp://ftp.freetds.org/pub/freetds/old/0.82/freetds-0.82.tar.gz.
   • Extract: tar -xvf freetds-0.82.tar.gz
   • Configure and Install:

     cd freetds-0.82
     ./configure --with-tdsver=8.0 --with-unixODBC=/usr/local
     make
     make install
     

     Configure FreeTDS:
3. • Edit freetds.conf: Find the freetds.conf file (usually in /usr/local/etc or /etc) and add the following, replacing placeholders:

     [MSHOSTNAME]
     host = your_sql_server_hostname_or_IP
     port = 1433 
     tds version = 8.0
     

Compiling mssql.so

1. Navigate to PHP Extension Directory:

   cd /home/cpeasyapache/src/php-X.X.X/ext/mssql

   (Replace X.X.X with your PHP version.)

2. Prepare and Build:

   phpize
   ./configure
   make
   make install

Activating the Extension

1. Locate php.ini: Find your PHP configuration file (php.ini). Its location can vary depending on your setup.
2. Add Extension: Open php.ini in a text editor and add the following line:

   extension="mssql.so"
   

3. Restart Apache:

   service httpd restart

Verifying Installation

To confirm that the extension is loaded, you have two options:

• Check Modules: Run php -m | grep mssql. If the installation was successful, you'll see "mssql" in the output.
• Create a phpinfo Page: Create a PHP file with the following content:

  <?php phpinfo(); ?>
  Open this file in your browser and search for "mssql." You should see detailed information about the MsSQL extension.

Troubleshooting Tip:

If you encounter an error during the FreeTDS configuration related to unixODBC, try using an older version of FreeTDS (like 0.82), as newer versions might have compatibility issues.

By carefully following these steps, you can manually install and enable the MsSQL extension in your cPanel/WHM environment, allowing your PHP applications to seamlessly interact with Microsoft SQL Server databases.

PEAR Management in cPanel

Installing PEAR in cPanel: A Guide for PHP Developers

PEAR (PHP Extension and Application Repository) is a valuable resource for PHP developers, offering a framework and distribution system for reusable PHP components. Whether you're building custom web applications or need specific functionality, PEAR can streamline your development process.

In this guide, we'll walk you through the steps for installing PEAR in your cPanel environment. The process varies slightly depending on your PHP version:

PHP Versions Less Than 5.3

1. Download go-pear: Use the following command in your terminal or SSH session:

   wget http://pear.php.net/go-pear

2. Install PEAR: Run the downloaded script:

   php go-pear.php

   Follow the on-screen prompts to customize your installation.

PHP Versions 5.3 and Above

1. Download go-pear.phar: Fetch the updated installer:

   wget http://pear.php.net/go-pear.phar

2. Install PEAR: Execute the installer using the following command:

   php go-pear.phar
   

   Again, follow the instructions to configure PEAR to your liking.

Important Notes

• Root Access: You'll need root access (via SSH or console) to perform these commands. If you're not comfortable with server administration, contact your hosting provider for assistance.
• Alternative Method: cPanel may have a built-in PEAR installer available in the software section. Check if this option exists for a more user-friendly installation.

Once PEAR is installed, you can manage packages using the pear command line tool:

• Installing a Package:

  pear install <package_name>
• Upgrading a Package:

  pear upgrade <package_name>
• Uninstalling a Package:

  pear uninstall <package_name>
• Listing Installed Packages:

  pear list

Why PEAR Matters

PEAR simplifies PHP development by providing:

• Reusable Components: A vast library of code packages for various tasks.
• Consistent Structure: A standardized way to organize and manage PHP projects.
• Easy Installation: Simple commands for adding and updating packages.
• Community Support: A large and active community of developers for troubleshooting and support.

By leveraging PEAR's capabilities, you can save time and effort while building robust and reliable PHP applications.

Let me know if you have any further questions about using PEAR with cPanel!