kvm-vm-tune

README

kvm-vm-tune

kvm-vm-tune is a CLI tool for managing KVM virtual machine resources, including CPU, memory, and disk.

Features

• Change CPU count for a VM
• Modify memory size of a VM
• Expand disk size for a VM
• Create new disk images
• Attach disks to VMs
• Attach network interfaces to VMs
• Dry-run option to preview commands without execution

Requirements

• sudo privileges are required to run the commands.
• The following tools must be installed on your system:
  • virsh
  • qemu-img
  • virt-resize

Usage

Change CPU count

$ kvm-vm-tune cpu <vm_name> --count <cpu_count>

Change memory size

$ kvm-vm-tune memory <vm_name> --size <memory_size>

Expand disk

$ kvm-vm-tune expand-disk <vm_name> --size <new_size> [--device <device>] [--partition <partition_number>] [--image <image_path>]

Create disk

$ kvm-vm-tune create-disk --path <disk_path> --size <disk_size> [--format <disk_format>]

Attach disk

$ kvm-vm-tune attach-disk <vm_name> --disk-path <disk_path> --target <target_device> [--cache <cache_mode>] [--driver <driver_type>] [--subdriver <subdriver_type>]

Attach network interface

$ kvm-vm-tune attach-iface <vm_name> --type <interface_type> --source <source_name> [--model <interface_model>]

Dry-run

Add the --dry-run flag to any command to preview the commands without executing them.

Examples

1. Change CPU count to 4 for VM named "myvm":

   $ kvm-vm-tune cpu myvm --count 4
   

2. Change memory size to 8G for VM named "myvm":

   $ kvm-vm-tune memory myvm --size 8G
   

3. Expand disk size to 40G for VM named "myvm":

   $ kvm-vm-tune expand-disk myvm --size 40G
   

4. Create a new 10G disk image in qcow2 format:

   $ kvm-vm-tune create-disk --path /var/lib/libvirt/images/newdisk.img --size 10G --format qcow2
   

5. Attach the newly created disk to a VM:

   $ kvm-vm-tune attach-disk myvm --disk-path /var/lib/libvirt/images/newdisk.img --target vdb
   

6. Attach a bridge network interface to a VM:

   $ kvm-vm-tune attach-iface myvm --type bridge --source br0 --model virtio
   

7. Dry-run disk expansion:

   $ kvm-vm-tune expand-disk myvm --size 40G --dry-run
   

License

This project is licensed under the MIT License.