KVM virtual machine setting

Host machine setting

$ sudo apt-get install -y qemu qemu-kvm libvirt-daemon bridge-utils virt-manager virtinst libguestfs-tools nmap

$ virsh net-list --all

 

# start default network

$ virsh net-start default

$ virsh net-list

 

You can check the bridge network on hostmachine like 'virbr0'.

Install guest VM with OS: ubuntu 18.04

Install OS on guest VM with ubuntu 18.04, 2 vCPUs, 4GB RAM, 30GB disk in CLI environment using ISO os image.

$ virt-install --name vm-1 --ram 4096 --vcpus 2 --disk ~/vm-1.img,size=30 --os-type linux --os-variant ubuntu18.04 --network bridge=virbr0 --graphics none --console pty,target_type=serial --location ~/ubuntu-18.04.3-server-amd64.iso --extra-args 'console=ttyS0,115200n8 serial'

 

Open-ssh server must be installed during the process.

Connect VM via console

You can check the VM's IP through this command.

$ sudo nmap -sP [virbr0 CIDR] (192.168.0.0/24)

 

$ ssh user@VMIP

$ sudo systemctl enable serial-getty@ttyS0.service && sudo systemctl start serial-getty@ttyS0.service

 

$ virsh list --all

$ virsh connect vm-1