In this article ,we will see that how to add new virtual disk or LUN to the KVM guest and how to resize the existing virtual disk on active domain/guest. This operations can be carried out on fly without any downtime to the guest operating system. KVM supports both physical LUN mapping and virtual disk […]
Redhat-LINUX
How to clone a KVM virtual Machines and reset the VM – Part 6
If you want to build several VMs with the same OS and configuration, “CLONE ” is the best method to save the time instead of installing operating system on each virtual machines. “virt-clone” is useful binary tool to clone the virtual machines with unique ID and MAC address (When you clone from existing virtual machine). To […]
KVM – Virtual Machine Manager Font issue – VMM GUI
Virtual Machine Manager (VMM or virt-Manager) is GUI tool to manage the KVM hypervisors. This tool can be installed on KVM hosts or in remote system to manage the VM’s. When I tired to access the virt-manager via SSH X11 forwarding on RHEL 7.2 , I got the GUI without any fonts (or with junk […]
Deploy KVM instance using Virt-Manger (VMM)- GUI – Part 5
Virt-Manager is powerful GUI tool to manage the multiple KVM hosts and it’s associated VM’s. It support’s XEN virtualization too. It can be installed on KVM hypervisor hosts or on centralized management host to manage the multiple hyper-visors from one place. Using virt-manager, you can start, pause(suspend), shutdown VMs, display VM details (Ex: VCPUs, memory, disk space), […]
Launch the first KVM instance using CLI – Part 4
Provisioning new VM’s (guests) using “virt-install” binary is straight forward. virt-install can be run in interactive or non-interactive mode. This command have more options but easy to remember since those are very meaningful. This article is going to demonstrate the VM creation using virt-install tool in non-interactive mode. You can also use GUI (VMM – […]
RHEL 7.2 – Configuring KVM hosts – Part 3
KVM hosts needs to be prepared to store and provide the network access to the guest machines. In last article ,we have seen KVM package installation and VMM(virtual Machine Manager) package installation. Once you have installed the packages, you need to create the filesystem to store the virtual machines images (/var/lib/libvirt/images which is the default storage […]
Redhat Enterprise Linux – KVM Installation Part 2
This article will demonstrates that how to install the KVM (kernel-based virtual Machines) packages on Redhat enterprise Linux 7.2 . We must have “yum repository” to install the KVM packages and it’s dependencies. There are many GUI tools available to manage the KVM. VMM (Virtual Machine Manager) is famous GUI tool which was developed by […]
Kernel Based Virtual Machine (KVM) – Overview Part 1
KVM is free open source full virtualization solution for Linux on x86 hardware. After the cloud revolution, KVM(Kernel Based Virtual Machine) Virtualization is a hot topic in the industry. Most of the cloud technologies will prefer to use the KVM hypervisors over XEN due to it’s simplicity. Redhat and Ubuntu’s default hypervisor is KVM. Contrast to these vendors, Oracle Linux […]
How to Patch/Update RHEL 7 without internet connection ?
Linux is not a windows operating system to install the security patches and other bug fix patches for every week. At the same time , it’s not like an Unix operating system where you no need to patch it for years. You should plan to patch the Redhat Linux yearly twice to eliminate the security […]
How to Map the VMware virtual Disks for Linux VM ?
Most of the VMware virtual machines are configured with few virtual disks with different size according to the project requirement. When it comes to the Linux VM , there will be a dedicated disk for the root filesystem and other disks are used for application/data. So whenever there is request for resizing the existing drive , it […]