virsh

Virsh is a powerful command-line tool used for managing virtual machines (VMs) through the libvirt management API.

1. It is commonly used in Linux-based operating systems, particularly those that utilize the KVM (Kernel-based Virtual Machine) hypervisor.
2. With virsh, you can perform a wide range of operations on VMs, including creating, deleting, pausing, resuming, starting, and stopping them.
3. It provides a convenient interface for managing multiple VMs simultaneously, allowing you to view their status, resources, and configuration.
4. Virsh supports various storage options, enabling you to manage virtual disks, filesystems, and storage pools associated with your VMs.
5. It allows you to interact with VM consoles, providing access to the guest operating system's console or graphical display for troubleshooting or administrative tasks.
6. Virsh also supports managing virtual networks, including creating and configuring network interfaces and bridges for the VMs.
7. It offers snapshot functionality to capture the current state of a VM, allowing you to revert back to that state if needed.
8. You can automate tasks with virsh using scriptable commands or by leveraging its comprehensive API.
9. Advanced features like live migration, CPU and memory management, and CPU topology adjustments are supported by virsh.
10. Virsh is highly extensible, and additional functionality can be added through plugins and external modules.