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Category: Configurations (Linux)

Removing CEPH from Proxmox Cluster

Rumi, July 23, 2025

I found this works well to completely remove ceph and config: systemctl stop ceph-mon.target systemctl stop ceph-mgr.target systemctl stop ceph-mds.target systemctl stop ceph-osd.target rm -rf /etc/systemd/system/ceph* killall -9 ceph-mon ceph-mgr ceph-mds rm -rf /var/lib/ceph/mon/ /var/lib/ceph/mgr/ /var/lib/ceph/mds/ pveceph purge apt purge ceph-mon ceph-osd ceph-mgr ceph-mds apt purge ceph-base ceph-mgr-modules-core rm -rf…

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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…

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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…

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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…

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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…

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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…

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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.

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Install Uptime Kuma on Debian 12

Rumi, January 25, 2025

Log into the Linux device. Run the following commands in a terminal window# update software repositories sudo apt update # install available software updates sudo apt upgrade -y # install prerequisites sudo apt install git curl -y # add nodejs software repository curl -sL https://deb.nodesource.com/setup_current.x | sudo bash – #…

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Install HAProxy on Ubuntu 20.04

Rumi, January 18, 2025

Prerequisites To follow along with this HAProxy tutorial, you require the following: A set of 3 Ubuntu 20.04 servers configured with private networking. Please refer to the guide on How to Create a Private Network to set up private networking for your Vultr servers. Your servers should be in the…

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mirrorlist.centos.org no longer available – updating centos 8 repository

Rumi, January 18, 2025

mirrorlist.centos.org doesn’t exists anymore. From the .repo file: # The mirror system uses the connecting IP address of the client and the # update status of each mirror to pick mirrors that are updated to and # geographically close to the client. You should use this for CentOS updates #…

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Myself…

Hi, I am Hasan T. Emdad Rumi, an IT Project Manager & Consultant, Virtualization & Cloud Savvyfrom Dhaka, Bangladesh. I have prior experience in managing numerous local and international projects in the area of Telco VAS & NMC, National Data Center & PKI Naitonal Root and CA Infrastructure. Also engaged with several Offshore Software Development Team.

Worked with Orascom Telecom-Banglalink, Network Elites as VAS partner, BTRC, BTT (Turkey) , Mango Teleservices Limited and Access to Informaiton (A2I-UNDP)

Currently working at Oracle Corporation as Principal Technology Solution and Cloud Architect.

You can reach me [h.t.emdad at gmail.com] and I will be delighted to exchange my views.

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Recent Posts

  • How to Set Windows File Associations to Open .JNLP Files July 28, 2025
  • Removing CEPH from Proxmox Cluster July 23, 2025
  • Install Jitsi on Ubuntu 22.04 / 22.10 April 30, 2025
  • Key Lessons in life April 26, 2025
  • Create Proxmox Backup Server (PBS) on Debian 12 April 19, 2025
  • Add Physical Drive in Proxmox VM Guest April 19, 2025
  • Mount a drive permanently with fstab in Linux April 16, 2025
  • Proxmox 1:1 NAT routing March 30, 2025
  • Installation steps of WSL – Windows Subsystem for Linux March 8, 2025
  • Enabling Nested Virtualization In Proxmox March 8, 2025

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