Author: Rumi

Hasan T. Emdad is an ICT Solution Architect, Project Manager with 12+ year expertise in HW selection, OS expertise on Linux and MS, Supervising Application SW on Pearl, Java, dot Net and PHP with DB experience of MySQL, Postgre, MS and Oracle. He was involved in setting up several Turn Key ICT including Telecom based projects on various government and autonomous bodies in the country. Developed more than 50 applications running with different operators and users. Managing a team of more than 10 in-house engineers and developers and manages an outsourcing team experts and contributors. Very recently engineered Public Key Infrastructure (PKI) on Enterperise and Root Certifying Authority and deployed scalable Cloud Computing and Managed Services. He has post graduated (MBA) from University of Dhaka, Bangladesh.

Install Jitsi on Ubuntu 22.04 / 22.10

Rumi, April 30, 2025

Make sure your system is up-to-date and required packages are installed: Run as root or with sudo: # Retrieve the latest package versions across all repositories sudo apt update # Ensure support for apt repositories served via HTTPS sudo apt install apt-transport-https On Ubuntu systems, Jitsi requires dependencies from Ubuntu’s universe package repository. To ensure…

Key Lessons in life

Rumi, April 26, 2025

14. Life Is Good: Life is not fair and doesn’t treat everyone equally but this is because every human being is different from the other, and that is why life isn’t the same for everyone. The honest truth is; while life isn’t fair, it’s still worth living. While there will…

Create Proxmox Backup Server (PBS) on Debian 12

Rumi, April 19, 2025

Preparation – Required Ports If you need to open up a firewall, or perform port-forwarding, below are the ports you need to know about: 8007 (TCP) – Almost all communication happens over this HTTP TLS connection. 80 (TCP) – optionally required if wish to make use of Let’s Encrypt HTTP-based…

Add Physical Drive in Proxmox VM Guest

Rumi, April 19, 2025

Step-1: Check the block disk status- lsblk Step-2 Check the blockid of the system- blkid Step-3 Now list the device by ID- ls -n /dev/disk/by-id/ Now add the disk to the Virtual Machine Instance- /sbin/qm set 105 -virtio1/dev/disk/by-id/ata-HGST_HGH728570ALE604_VKGRZ09X Here- 105- is the VMID virtio1- is the disk ID number, assuming…

Mount a drive permanently with fstab in Linux

Rumi, April 16, 2025

Step 1: Find the UUID of the drive First, you need to find the UUID of the drive you want to mount. You can do this by running the following command: sudo blkid This will list all the drives connected to your system along with their UUIDs. For example, the…

Proxmox 1:1 NAT routing

Rumi, March 30, 2025

Background: The objective was to serve VM’s default route via private network Public IP with no default route More control over firewalling policy over the VM (which is not covered in this post) Automation via DHCP on VM provisioning (This too no covered in this post) D-NAT to the VM…

Administrations

Installation steps of WSL – Windows Subsystem for Linux

Rumi, March 8, 2025

Step 1 – Enable the Windows Subsystem for Linux You must first enable the “Windows Subsystem for Linux” optional feature before installing any Linux distributions on Windows. Open PowerShell as Administrator (Start menu > PowerShell > right-click > Run as Administrator) and enter this command: dism.exe /online /enable-feature /featurename:Microsoft-Windows-Subsystem-Linux /all /norestart We…

Enabling Nested Virtualization In Proxmox

Rumi, March 8, 2025March 8, 2025

Nested Virtualization is a feature that allows you to run a virtual machine within a virtual machine while still using hardware acceleration from the host machine.Put simply, it allows you to run a vm inside of a vm. Enabling Nested Virtualization In Proxmox Everything we do will be done on…

How to Modify/Change console/SSH login banner for Proxmox Virtual Environment (Proxmox VE / PVE)

Rumi, March 3, 2025March 3, 2025

The final banner text is stored in /etc/issue, but we should not change this file, instead we should change the script which produces the content for this file “/usr/bin/pvebanner“ 1 To modify the /usr/bin/pvebanner file we can use the following command to back it up first then edit it # Backup the file…

Install Proxmox Backup Server on Debian 12

Rumi, February 12, 2025February 12, 2025

Set Hostname. Edit /etc/hostname. # nano /etc/hostname Overwrite the file with following content and save using Ctrl + X then Enter. pbs.example.com Edit /etc/hosts. # nano /etc/hosts Add the following line and save the file using Ctrl + X then Enter. 127.0.0.1 pbs.example.com Reboot the server. # reboot Check if the system hostname matches your subdomain.