dgerin / qemu_vm

Small QEMU Virtual Machine Management Tool

qemu_vm

Small QEMU Virtual Machine Management Tool

Usage

create new vm image from iso file

./vm.py create_from_iso mydebian 16 debian-10.13.0-amd64-xfce-CD-1.iso

Will create a 16 GB disk file and start a new qemu vm for os installation with debian-10.13.0-amd64-xfce-CD-1.iso image

create new vm image from predefined distribution (debian or ubuntu)

./vm.py create mydebian 16 debian

Will create a 16 GB disk file, download the predefined debian iso file and start a new qemu vm for os installation.

start vm (need an installed qemu image)

./vm.py start dg-vm-debian10.13.qcow  --daemonize --ssh_port 9134

Will start a new vm from dg-vm-debian10.13.qcow image in the background and expose ssh port 9134.

configurre a new vm (eg debian-10.13)

If no ssh server is installed on the vm (default), you should start the vm in graphical mode.

  ./vm.py start dg-vm-debian10.13.qcow --graphical

set the user as root

  usermod -aG sudo {USER}

install ssh server on vm (eg ubuntu-10.04)

install openssh-server

sudo apt install openssh-server

Then, you can restart the machine on non-graphical mode (default), and connect through ssh.

./vm.py start dg-vm-debian10.13.qcow  --daemonize --ssh_port 9134
ssh {USER}@localhost -p 9134

start the vm with an additional disk

as example, to create a new disk of 32 GB

qemu-img create -f qcow2 mydisk.qcow2 32G

start the machine with the new disk attached

./vm.py start dg-vm-debian10.13.qcow  --daemonize --ssh_port 9134 --disk mydisk.qcow2
ssh {USER}@localhost -p 9134

Normally, the new disk is visible in /dev/vdb, you can check that your disk is visible with

fdisk -l

the first time, you need to create create a new partition on the new disk (eg ext4)

sudo mkfs -t ext4 /dev/vdb

then, you can mount it manually on specific directory (eg : /data) :

sudo mkdir /data && sudo chown {USER}:{GOUP} /data
sudo mount /dev/vdb /data

or configure the fstab as below for a permanent mounting point :

sudo echo "/dev/vdb /data ext4 rw,user,auto,exec 0 0" >>  /etc/fstab

Apendix

update debian10 packages list (buster)

add this to /etc/apt/sources.list

deb-src http://deb.debian.org/debian/ buster main

deb http://security.debian.org/debian-security buster/updates main
deb-src http://security.debian.org/debian-security buster/updates main

# buster-updates, previously known as 'volatile'
deb http://deb.debian.org/debian/ buster-updates main
deb-src http://deb.debian.org/debian/ buster-updates main

deb-src http://deb.debian.org/debian/ sid main contrib non-free

disable password for USER

sudo visudo

add thoses lines :

{USER}  ALL=(ALL) NOPASSWD:ALL