Zswap is a kernel feature which provides a compressed RAM cache for swap pages, it works in conjuction with swap space. If swap partition is not present then we can create a swapfile and activate it. Making a filebased swap,…
Converting vmware vmdk images to kvm qcow2 images
Red hat certifications are one of the most demanding in the in the IT industry , i wanted to get started with planning working towards getting RHCE certified ,while preparing for rhce certification one of the recommended book is Red…
Setting default gateway from virsh-net command line
Generally when a network is configured from virsh-define for a particular range say 192.168.4.0 it gateway will be automatically assigned to 192.168.4.1, if the gateway wants to be changed to 192.168.4.2 then it can be done by using virsh-net edit…
systemd-udev-settle.service hangs on fedora 28
Recently while playing around disk partitions on fedora 28 i have observed that boot times were painfully slow on my laptop, when investigated found the issue was due to an enty for non existant swap partition in fstab. to fix…
Getting started with foreman
Foreman is a provisioning and complete life cycle management orchestration tool for managing infratructure from a graphical interface and also from command line tool hammer-cli. With computing resources in foreman supports managing different type of hosts like vmware, aws ,…
Deploying Personal Virtual Desktops by using Remote Desktop Web Access Step-by-Step Guide
Abstract Personal virtual desktops are virtual machines that are assigned to a user within your organization and available by using either RemoteApp and Desktop Connection or Remote Desktop Web Access (RD Web Access). In this guide, we will set up…
Disk expansion after clonezilla restore to a larger disk.
Clonezilla used to restore the clone image to a destiantion drive , if the destination drive size is larger than the original source disk cloned then after image restore you will see old disk size instead of new one. Eg:…
No internet on kvm guests.
After setting up bridge network on network interface enp9s0 , kvm guests had issues with accessing ssh,internet. Current bridge configuration bridge name bridge id STP enabled interfaces br0 8000.001c2301fbdc no enp9s0 to allow kvm guests network connectivity with host net.ipv4.ip_forward…
Openvswith with kvm bridge network.
Openvswith is a virtual switch production level software, that can be used in virtual switch in VM environments like kvm , virtualbox etc.. In case of vm’s network connection to outer world is established by NAT or Bridge (Layer2 device)…
Openvswitch on fedora with kvm.
Openvswitch is the software used on both physical and virtual environments to implement L2 switching. Instalallation of openvswitch. #dnf install -y virt-install libvirt openvswitch Enabling the openvswitch service and daemon. #systemctl enable openvswitch Created symlink /etc/systemd/system/multi-user.target.wants/openvswitch.service → /usr/lib/systemd/system/openvswitch.service. #systemctl start…