KVM: Start a Virtual Machine / Guest At Boot Time

To start a virtual machine (also known as a guest) at boot time using KVM (Kernel-based Virtual Machine), you can follow these steps:

1. Make sure the virtual machine is shut down:

virsh shutdown <vm_name>

2. Set the virtual machine to start automatically at boot time:

virsh autostart <vm_name>

3. Start the virtual machine:

virsh start <vm_name>

You can also use the virsh setmaxmem and virsh setmem commands to set the maximum and current memory allocation for the virtual machine. For example:

virsh setmaxmem <vm_name> <max_memory>
virsh setmem <vm_name> <memory>

Replace <vm_name> with the name of the virtual machine, and <max_memory> and <memory> with the desired values in megabytes.

It's always a good idea to carefully review the documentation and ensure that you have sufficient resources on the host system to support the virtual machines you are running.