Creating a XEN guest and tidbids in CLI

April 7, 2023 by Rumi

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 paravirtualized (“PV”) DomU.

INSTALL DEBIAN PACKAGE XEN-TOOLS

Use apt-get to update the Xen hypervisor/Dom0 package index files, and upgrade all currently installed packages. As root run the following command:

# apt-get update && apt-get upgrade

Next, use apt-get to install the xen-tools package from the Debian stretch repository, which is currently shipping xen-tools version 4.8-1. Run the following command as root:

# apt-get install xen-tools

SET UP NEW PARTITION AND VOLUME GROUP

Before we use xen-tools to create a new DomU, we need to create a LVM volume group which will be used to provision disk space for new virtual machines. In this step, we assume Dom0 was installed on the /dev/sda1 partition of your primary disk drive, and that all other /dev/sda drive space is empty. Continue reading “Creating a XEN guest and tidbids in CLI” »

Cloudmin-GPL XEN on Debian 10

April 7, 2023 by Rumi

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 DOMAIN (“DOM0”)

In this step we install the Xen Project hypervisor software package, and configure the Dom0 virtual machine by way of the Debian base operating system. Once all preliminary configuration is complete, we will reboot the computer and automatically boot into the Xen hypervisor/Dom0 virtual machine to explore the new system.

INSTALL XEN HYPERVISOR

If you need to add a non-root user, the sudo package, non-free firmware, a firewall, or other necessary packages, now is the time.

Use apt-get to update the Debian base operating system package index files, and upgrade all currently installed packages. As root (or using sudo) run the following command:

# apt-get update && apt-get upgrade

Next, use apt-get to install the Xen Project hypervisor meta-package. Run the following command as root, adjusting the architecture suffix to suit your hardware: Continue reading “Cloudmin-GPL XEN on Debian 10” »

Create a local ISO SR at XCP-NG

March 22, 2023 by Rumi

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 change the files stored in the ISO directory

Continue reading “Create a local ISO SR at XCP-NG” »

Install Xen Orchestra on Ubuntu 20

March 21, 2023 by Rumi

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 16

Now that the PPA source has been added, we can install NodeJS 16 on our Ubuntu 20.04 installation. Run the following command:

sudo apt install nodejs -y

Tip: The -y flag means we’re not prompted to confirm our choices. Continue reading “Install Xen Orchestra on Ubuntu 20” »

Extreme slow internet speed pfsense over proxmox

February 16, 2023 by Rumi

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-

Disable hardware checksum offload
Disable hardware TCP segmentation offload
Disable hardware large receive offload

Force stop xen vm using command line

February 6, 2023 by Rumi

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 command with force
```
xe vm-shutdown uuid=<UUID from step 3> force=true
```
If that just hangs, use CONTROL+C to kill it off and try to reset the power state. The force is required on this command
```
xe vm-reset-powerstate uuid=<UUID from step 3> force=true
```
If the VM is still not shutdown, we may need to destroy the domain. Run this command to get the domain id of the VM. It is the number in the first row of output. The list will be the VMs on the host. Dom0 will be the host itself and all numbers after are running VM
```
list_domains
```
Now run this command using the domain ID from the output of step 7
```
xl destroy <DOMID from step 7>
```

Install VirtualBox legacy version 5.x on CentOS 7

June 11, 2022 by Rumi

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

Continue reading “Install VirtualBox legacy version 5.x on CentOS 7” »

Install Docker on Debain 10

December 21, 2021 by Rumi

Installing Docker

The Docker installation package available in the official Debian repository may not be the latest version. To ensure we get the latest version, we’ll install Docker from the official Docker repository. To do that, we’ll add a new package source, add the GPG key from Docker to ensure the downloads are valid, and then install the package.

First, update your existing list of packages:

sudo apt update

Next, install a few prerequisite packages which let apt use packages over HTTPS:

sudo apt install apt-transport-https ca-certificates curl gnupg2 software-properties-common

Then add the GPG key for the official Docker repository to your system: Continue reading “Install Docker on Debain 10” »

Proxmox VM auto start VM after found in shutdown state

July 30, 2021 by Rumi

I was having this strange issue, where a running busy VM stopeed all of a sudden due to high CPU or Memory overload issue. So manually had to start everythime. In order to avoid this, created a small script to start the VM in case if it’s down.

#!/bin/bash

# Set environment
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

su -

if [[ $(qm status 101) = *"status: stopped"* ]];
then
echo `qm start 101`
fi

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Category Archives: Virtualization