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Python

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Debian Lab - Máquinas virtuales con Debian 10,11 y 12
import os
import requests
import shutil
from getpass import getpass
dirVms=os.path.expanduser('~')+"/vms"
dirVmsTemp=dirVms+"/templates"
dirVmsImgs=dirVms+"/images"
cloudImgs=["https://cloud.debian.org/images/cloud/buster/latest/debian-10-nocloud-amd64.qcow2", "https://cloud.debian.org/images/cloud/bullseye/latest/debian-11-nocloud-amd64.qcow2", "https://cloud.debian.org/images/cloud/bookworm/latest/debian-12-nocloud-amd64.qcow2"]
vmMemory=4096 # En Megas
def main():
createDirs() # Comprobamos si existen los directorios y si no es así se crean.
downloadTemplates() # Comprobamos si ya están bajadas las imagenes cloud y si no es así se bajan.
choice() # Elegir entre Crear una nueva máquina virtual, ejecutar una ya existente o borrarla.
def createDirs():
if not os.path.exists(dirVms):
os.makedirs(dirVms)
os.makedirs(dirVmsTemp)
os.makedirs(dirVmsImgs)
def downloadTemplates():
qcowTemplates = os.listdir(dirVmsTemp)
if len(qcowTemplates) == 0:
for i in range(len(cloudImgs)):
localFilename = cloudImgs[i].split('/')[-1]
session = requests.Session()
response = session.get(cloudImgs[i],allow_redirects=True,stream=True)
if response.status_code == 200:
print("[+] Downloading \t"+cloudImgs[i]+"\t[200]")
downloadQcow = session.get(cloudImgs[i], allow_redirects=True)
open(dirVmsTemp+"/"+localFilename, 'wb').write(downloadQcow.content)
def choice():
print("[1] New VM\n[2] Run VM\n[3] Del VM\n[4] Exit")
option=input("\nOption: ")
if option == "1": createVms()
if option == "2": runVms()
if option == "3": delVms()
if option == "4": return 0
def createVms():
qcowFiles = os.listdir(dirVmsTemp)
qcowFiles.sort()
vmName=input("\nVM Name: ")
print("\nSeleccione una versión de Debian\n")
for i in range(len(qcowFiles)):
print("["+str(i)+"] - Debian "+qcowFiles[i].split('-')[-3]+" ("+qcowFiles[i].split('-')[-1]+")")
vmVersion=input("\nVersion: ")
shutil.copyfile(dirVmsTemp+"/"+qcowFiles[int(vmVersion)], dirVmsImgs+"/"+vmName+".qcow2")
print("\nTamaño del disco en Gigas")
vmSize=input("\nSize: ")
os.system("qemu-img resize "+dirVmsImgs+"/"+vmName+".qcow2 "+vmSize+"G")
print("\nPassword de root")
#vmPasswd=input("\nPassword: ")
vmPasswd=getpass("\nPassword: ")
os.system("virt-customize -a "+dirVmsImgs+"/"+vmName+".qcow2 --root-password password:"+vmPasswd)
os.system("virt-customize -a "+dirVmsImgs+"/"+vmName+".qcow2 --hostname "+vmName)
os.system("virt-customize -a "+dirVmsImgs+"/"+vmName+".qcow2 --install dropbear")
os.system("virt-customize -a "+dirVmsImgs+"/"+vmName+".qcow2 --firstboot-command 'growpart /dev/sda 1'")
os.system("virt-customize -a "+dirVmsImgs+"/"+vmName+".qcow2 --firstboot-command 'resize2fs /dev/sda1'")
choice()
def runVms():
qcowFiles = os.listdir(dirVmsImgs)
qcowFiles.sort()
if len(qcowFiles) != 0:
print("\nSeleccione una máquina para ejecutarla\n")
for i in range(len(qcowFiles)):
print("["+str(i)+"] - "+qcowFiles[i])
vmRun=input("\nMachine: ")
os.system("qemu-system-x86_64 -machine type=q35,accel=kvm -enable-kvm -device virtio-net-pci,netdev=net0 -netdev user,id=net0,hostfwd=tcp::2222-:22,hostfwd=tcp::3000-:3000 -smp $(nproc) --boot c -nographic -monitor telnet::45454,server,nowait -serial mon:stdio -m "+str(vmMemory)+" -hda "+dirVmsImgs+"/"+qcowFiles[int(vmRun)])
choice()
def delVms():
qcowFiles = os.listdir(dirVmsImgs)
qcowFiles.sort()
if len(qcowFiles) != 0:
print("\nSeleccione una máquina para borrarla\n")
for i in range(len(qcowFiles)):
print("["+str(i)+"] - "+qcowFiles[i])
vmDel=input("\nMachine: ")
os.system("rm -rf "+dirVmsImgs+"/"+qcowFiles[int(vmDel)])
choice()
main()