If you’re using Ubuntu Dekstop or server, and one day you decided to change the IP address of your ubuntu machine from automatic (DHCP) to static configuration. how do you achieve that? If you are using Ubuntu with GUI, it is pretty straightforward, but what if you don’t have GUI and the only option that …
Linux
If there is no SNMP protocol, monitoring the Network hosts would have been difficult tasks for the admins. SNMP is a protocol that helps you identify the host availability with many parameters such as network health, hardware resources such as CPU utilization, memory storage, etc. In this blog, let’s discuss how to configure SNMP on …
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 …
The other day I was working on adding some of the Redhat servers into production for monitoring. I also got the SNMP community string from the team that is managing the monitoring tools as well. I was very confident that I even informed them that I would configure the SNMP on the server in another …
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 …
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 …
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 …
I have covered few blog posts about installing VM’s such as Centos, Ubuntu, Windows on different hypervisors. However, the installation of CentOS 8 on the 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 …
There are a few features that are not available out of the box in Ubuntu. One such feature is SSH. If you ever install Ubuntu desktop 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’ However, in the Ubuntu server …
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 …
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 …
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 …
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. …
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 Workstation pro? VMWare workstation pro is a Software program that would let you install different …
If you are using a MAC or Windows 10 as your operating system and wanted to try out a Linux operating system. And you are wondering what is the best Linux distribution out there that you can start with. The answer is Ubuntu desktop, it is a very popular Linux distribution that you can try …
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 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 …