How to manage Docker containers on Ubuntu

While full hardware virtualization such as KVM, Xen or Hyper-V is great at running fully isolated instances of multiple operating systems on a physical host, it comes with various overheads in terms of performance, resource, and provisioning time. Depending on your use cases, full machine virtualization may actually not be necessary. An alternative lightweight virtualization […]
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How to use KVM from the command line on Debian or Ubuntu

There are different ways to manage virtual machines (VMs) running on KVM hypervisor. For example, virt-manager is a popular GUI-based front-end for VM management. However, if you would like to use KVM on a headless server, GUI-based solutions will not be ideal. That is when virsh comes in handy. virsh is a command-line tool for […]
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How to install and configure KVM and Open vSwitch on Ubuntu or Debian

In today’s multi-tenant data centers, the concept of virtualization is being extended from hypervisor-driven server virtualization to network virtualization. In this environment, software-based virtual switches are being installed on servers along with hypervisor, bridging traffic among different virtual machines (VMs). In this tutorial, I am going to demonstrate how to install and configure KVM and […]
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How to install and configure KVM on CentOS

KVM is a kernel-based hypervisor which grows quickly in maturity and popularity in the Linux server market. Red Hat officially dropped Xen in favor of KVM since RHEL 6. With KVM being officially supported by Red Hat, installing KVM on RedHat-based systems should be a breeze. In this tutorial, I will describe how to install […]
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How to configure a Linux bridge interface

In computer networking, a bridge is a network device that connects more than one LAN segment at Layer-2. Bridges can filter traffic between different segments, thereby reducing the amount of traffic on LAN, even with many LAN segments. Linux has software bridge functionality built into kernel. In this post, I will describe how to configure […]
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