libvirt qemu unexpectedly closed the monitor Failed to create chardev

On CentOS 7 server, after installing KVM, i connected to server using Virt Manager. During VM creation, i get following error libvirt.libvirtError: internal error: qemu unexpectedly closed the monitor: 2021-02-01T18:09:38.214356Z qemu-kvm: -chardev pty,id=charserial0: Failed to create chardev To fix this, edit file


Replace with

Reboot the server. After reboot, VM creation […]

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Install Linux KVM on CentOS 7

Install kvm with

Install libvirt, this is used to manage KVM virtual machines.

Enable libvirtd to start on boot

Start libvirtd

To see status, run

Install virt-install

Now you have Linux KVM installed. You can use virt-install or Virt Manager to create virtual machine. When i create a Virtual […]

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Download OS Templates Virtualizor

To create a Virtal Machine (VPS) on Virtualizor, you need OS Template. You can use pre-made OS templates or make your own OS template. You can see list of pre-made OS templates provided by Virtualizor at To download an OS Template, login to Virtualizor, from left side menu, click on

Click the check […]

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Virtualizor Error No Gateway Found, Please assign a Gateway

On Virtualizor server, when start virtnetwork, i get following error

This is because the network inferace configuration don’t have GATEWAY defined. Find your network interface name with command

Now check configuration file for your network interface. On this server, i had following configuration

You need to find the gateway used by your […]

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Virtualizor error fetching interface information

When starting network in virtualizor server, i get following error

To fix this error, find the network interface name with command

In this case, the name is enp4s0, we need to add this name in Virtualizor Admin > Configuration > Master or Slave Settings > Network Settings > Network Interface If you have […]

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Proxmox take snapshot of Virtual Machine

proxmox snapshot

To take snapshot of virtual machine in proxmox, click on Virtual Machine, under Snapshots, clikc “Take Snapshot” button. To create snapshot through command line, login to Proxmox server as user root, then run

nameOfSnapShot = no space or special chars allowed. Sould start/end with alphabet (numbers should NOT be used at start/end). See Proxmox […]

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