Kernel-based Virtual Machine (KVM) is a virtualization infrastructure for the Linux kernel that turns it into a hypervisor. It was merged into the Linux kernel mainline in kernel. It is now part of Linux kernel itself. It consists of a loadable kernel module, kvm.ko, that provides the core virtualization infrastructure and a processor specific module, kvm-intel.ko Intel or kvm-amd.ko for AMD cpu.


=> Read more: How to install KVM on Ubuntu 16.04 LTS Headless Server
If you are getting this error then you probably reset the permissions on your keys:

chmod 0400 ~/.ssh/key
chmod 0700 ~/.ssh/
ssh -i ~/.ssh/key user@server




More info: Fixing ssh error.
For security and ease of admin, I want to install LXD on my cloud server either powered by XEN or KVM. How do I install LXD on Ubuntu Linux server powered by KVM virtualization technology?

In this quick tutorial you will learn how to install the latest stable version of LXD container under KVM cloud server hosted at Linode for security mechanism on Ubuntu Linux 16.04.xx LTS server.

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