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Category: Virtualization

Fixing Proxmox Delete user failed: cannot update tfa config, following nodes are not up to date:

Rumi, August 2, 2023

Please check if all the nodes are on the same package versions: run pveversion -v and compare the outputs. If they’re not matching, you can run apt update && apt dist-upgrade To upgrade the nodes. if there’s a kernel upgrade you will also need to reboot the machines. If after…

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VNC Client Access on Proxmox KVM guests

Rumi, June 30, 2023

Configure VNC Access in the Configuration File Add a line to the VM’s configuration file /etc/pve/local/qemu-server/<VMID>.conf which specifies the VNC display number as follows (“77” in the example below): args: -vnc 0.0.0.0:77 If you want to use password protection, add: args: -vnc 0.0.0.0:77,password=on The display number can be freely chosen,…

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Creating a XEN guest and tidbids in CLI

Rumi, April 7, 2023

INSTALLING A GUEST DOMAIN (“DOMU”) Now that the Xen hypervisor/Dom0 virtual machine is configured and up and running, it’s time to configure and create a DomU. Just like we did in the Debian 9 tutorial, we will now install and use the xen-tools package to automate the steps involved in creating a…

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Cloudmin-GPL XEN on Debian 10

Rumi, April 7, 2023April 7, 2023

This article is inspired and prepared on the forked Cloudmin Xen script updated for Debian 10. However, the following procedures to be followed as precuationary before executing the updated script, which is available in this post in below section. PHASE-I Prepare Environment for XEN INSTALLING THE XEN HYPERVISOR AND HOST/CONTROL…

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Create a local ISO SR at XCP-NG

Rumi, March 22, 2023

From the CLI: Create a directory on the local filesystem to storage your ISOs Copy/move ISOs to this new location Create the ISO SR using xe sr-create You can add or update ISOs later by placing them into the directory you created in step 1 Rescan the SR if you…

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Install Xen Orchestra on Ubuntu 20

Rumi, March 21, 2023

Prework apt-get update && apt-get dist-upgrade Node.js For this particular installation node 16 is needed to be installed. Lets install- Add NodeSource PPA This command will add PPA sources required to be able to install NodeJS 16 on your Ubuntu 20.04 installation: curl -s https://deb.nodesource.com/setup_16.x | sudo bash Install NodeJS…

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Extreme slow internet speed pfsense over proxmox

Rumi, February 16, 2023

For a qemu proxmox guest PFSense acts weriedly with the network speed- it gets extremely slow. So her goes the little tweaks that worked for me- First, I chose Intel E1000 Interfaces instead VirtIO. Second, in the PFSense webconsole- In pfSense GUI, System > Advanced > Networking > Tick on-…

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Force stop xen vm using command line

Rumi, February 6, 2023July 8, 2023

Instructions Disable High Availability (HA) so you don’t run into issues. Log into the Xenserver host that is running your VM with issues via ssh or console via XenCenter. Run the following command to list VMs and their UUIDs xe vm-list resident-on=<uuid_of_host> First you can try just the normal shutdown…

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Perfect Proxmox Template with Cloud Image and Cloud Init

Rumi, January 28, 2023January 30, 2023

Instructions Choose your Ubuntu Cloud Image. Here in this example will use ubuntu cloud-init image. Download Ubuntu (replace with the url of the one you chose from above) wget https://cloud-images.ubuntu.com/focal/current/focal-server-cloudimg-amd64.img Create a new virtual machine qm create 8000 –memory 2048 –core 2 –name ubuntu-cloud –net0 virtio,bridge=vmbr0 Import the downloaded Ubuntu…

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Install VirtualBox legacy version 5.x on CentOS 7

Rumi, June 11, 2022

Install Dependencies Install Extra Packages for Enterprise Linux (EPEL) # sudo yum install epel-release wget -y Install Dynamic Kernel Module Support (DKMS) # sudo yum –enablerepo=epel install dkms -y This will install quite a few packages: Install Development Tools # sudo yum groupinstall “Development Tools” -y

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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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