When I started to work with KVM, I used to ask myself a question How do I backup and restore a KVM VM?, or How do I revert my virtual machine to its old state, when things go wrong while I am making some changes. In the beginning, I used to copy the image from default libvirt default directory /var/log/libvirt/images/vm.qcow2 … Read More
9 Easy Steps To Configure Palo-Alto Firewall In GNS3
When you wanted to build and practice Paloalto lab, you have got multiple options. You could try physical gears if you can afford one, else virtualize them. So does gns3 support Palo alto? The Palo alto firewall works perfectly fine on the GNS3 environment. I have done multiple POC labs in GNS3 with it. One drawback is that without a … Read More
10 Easy Steps To Install Windows Server in Linux KVM
You wanted to install the windows 2019 server on a hypervisor and the option that you have right now is to use the QEMU KVM hypervisor. Then you are in the right place. And when it comes to the virtualization I love KVM, as it is an Opensource and free too. Whenever I had to choose between hypervisors I would … Read More
5 Easy Steps To Configure SNMP on Redhat Linux or CentOS
The other day I was working on adding some of the Redhat servers in to production for monitoring. I also got the SNMP community string from the team who is managing the monitoring tools as well. I was so confident that I even informed them that I would configure the SNMP on the server in another 5 mins :). Do … Read More
Useful KVM commands
In the last few blogs, I covered how you can install different Operating systems in a KVM host. But some of you are wondering I got this guest OS installed but how do I manage it. In this blog, let’s take a look at some of the useful KVM command line commands which you can run on the terminal. The … Read More
How to create Bridge and Vlan’s in Linux – Nuage SD-WAN lab Part – 2
What is the underlay and Overlay network? When it comes to Nuage-SDWAN there are two types of networks that we have to use. First one is called the underlay network and the second one is called the overlay network. The underlay network is nothing but our traditional network which would help us to connect all the network equipment. Once the … Read More
Install windows 10 on Ubuntu KVM
I love Ubuntu, especially when I wanted to work with python programming, But I also love windows 10 because of its GUI and the vast variety of software support. In the last blog, I covered how you can install windows 10 on Centos/Redhat KVM. But in this tutorial I going to cover the Debian derivative Ubuntu. Since I get a … Read More
How to install ubuntu VM on KVM?
I have a CentOS machine but there are times I would wanted to switch from CentOS to Ubuntu, how do I do that ? You can have a dual boot with both the Centos and the Ubuntu but if you wanted to switch from Centos to Ubuntu then you would have to shut down the Centos and during the boot … Read More
10 Easy steps to install CentOS 7/8 on VMware workstation
I have covered few blog posts in the past about installing VM’s such as Centos, Ubuntu, Windows on different hypervisors. However, installation of CentOS 8 on vmware workstation was totally different story. When the CentOS 8 came out I thought let me spin up the CentOS 8 on my VMware workstation. Guess what ?, The installation didn’t succeed. during the … Read More
Enable SSH and basic network tools in Ubuntu
There are few features that are not available out of the box in Ubuntu. One among such feature is SSH. If you ever install Ubuntu on your machine and expect the ssh to work by default, it doesn’t. You would get an error message that says ‘The remote system refused the connection’ And for me, being from the network background I really needed … Read More
5 easy Steps to change the display resolution in Linux
When you install Redhat Linux enterprise or a CentOS on a server, by default, it takes the display resolution as 800 x 600 or 1024 x 768. Also, when you go to display settings and try to modify the display resolution, you would be disappointed to see that there are no options available to increase the display resolution either from … Read More
How to transfer files from Ubuntu to Windows?
I recently installed Ubuntu on my VMWare workstation pro, and I realized that I need to transfer some files from my windows host machine to the Ubuntu Guest OS and vice versa. There are many ways you could transfer files from linux to windows . Lets look at the simple and easiest ways to transfer files between windows and Ubuntu. … Read More
Step by Step guide to install Nuage SD-WAN lab in KVM – Part 1
You are here because you wanted to learn about Nuage SD-WAN and its lab setup. For me, I don’t like to read more of theory when it comes to learning new technologies. I would instead do a lab first and make some mistakes and learn from them. By the time I finish the lab, I would know more about the … Read More
How To Configure Netplan Network – Examples
Ever since Ubuntu changed it’s network configuration utility to netplan from the traditional configuration, many of them got so upset. Some of them are very annoyed to the point they even entirely removed the netplan and installed ifupdown back into the system. So is Ubuntu Netplan going to stay ?, if yes shouldn’t we learn how to configure them on … Read More
8 Easy steps to configure Linux (Centos, Rhel, Ubuntu) as NTP servers
If you have a Linux machine (Ubuntu, Centos, Redhat) running in your environment and you would want to configure them as an NTP server it is pretty easy. In our last blog, we took a look at what is NTP and how to configure the public and private NTP servers. In this blog, we are going to configure the Linux … Read More
4 easy step to install CentOS on KVM
CentOS is one of my favorite Linux distros, I have been using them for quite a while for my labs as well as in POC’s. If I have to do some testing in the Redhat production servers I would prefer to use Centos as an alternate as both are identical and configuration looks the same and Centos doesn’t require a … Read More
10 Easy Steps To Install Windows 10 on Linux KVM
I usually use the windows vm machine as a jump server inside my labs, that way I can move around the files and stuff quickly, sometimes I install the windows machine on the ESXi host else I would install it on the KVM. For some, they wanted to use windows machines on their Linux box. They can either install Vmware … Read More
How To Extend Windows Storage in KVM ?
I have one windows machine that I use as an alternate operating system in my Linux KVM. Recently I noticed that the C drive in my windows got filled up and there is not enough space left to store any more data. If you have a physical box then it is a little difficult, as you have to expand your … Read More
Install Latest Ubuntu on VMware Workstation 15 | 10 Easy Steps
When you are a network engineer or a developer, you may want to test your skills in a virtual environment rather than playing with your machine or production environment. Because you never know what could go wrong. What is VMware’s Workstation and Fusion? VMWare workstation pro is a Software program that would let you install different operating systems, be it … Read More
[Solution] You need at least 8.6GB disk space to install Ubuntu. The computer has only 2.0GB
I was working on a topology where I had to add a Ubuntu desktop client to simulate the end-user machine. I tried to install Ubuntu on the KVM hypervisor. Downloaded the Ubuntu ISO file, moved the Ubuntu-desktop ISO file to /var/lib/libvert/images folder on the KVM server I was working on. Selected network configuration and started the VM installation. There were … Read More
[Solution] Device Eth0 Does Not Seem To Be Present, Delaying Initialization Centos
The other day I was working on a POC lab where I had to simulate a DNS server, Centos version 7 in this case in GNS3. It was for one of the nuage sdwan gns3 labs I was working on.Took a copy of centos DNS VM from existing KVM host, added into gns3 by going to edit preferences and under … Read More
