# Arch Headless Virt Install

## virt-install ubuntu16.04

Create the disk image

`qemu-img create -f qcow2 /var/lib/libvirt/images/xenial.qcow2 20G`

Command to run the install

```bash
virt-install \
    --name xenial \
    --ram 4096 \
    --disk path=/var/lib/libvirt/images/xenial.qcow2,size=20 \
    --vcpus 4 \
    --os-type linux \
    --os-variant ubuntu16.04 \
    --network bridge=br0 \
    --graphics none \
    --console pty,target_type=serial \
    --location ./ubuntu-16.04.3-server-amd64.iso \
    --extra-args 'console=ttyS0,115200n8 serial'
```
## virt-install Arch Linux
The `--extra-args` option lets you use a serial console. But the
`--extra-args` option only works if you also use an `--location`
option. But the `--location` option can only be used with certain isos.
So use `--cdrom` instead of `--location`, drop the `--extra-args`,
and instruct the kernel to boot with a serial console with a parameter
at the boot splash screen.

```bash
qemu-img create -f qcow2 /var/lib/libvirt/images/arch.qcow2 20G

virt-install --name arch --ram 4096 \
  --disk path=/var/lib/libvirt/images/arch.qcow2,size=20 \
  --vcpus 2 \
  --os-type linux \
  --os-variant ubuntu16.04 \ 
  --network bridge=virbr0 \
  --graphics none \ 
  --console pty,target_type=serial \
  --cdrom /var/lib/libvirt/images/archlinux-2018.02.01-x86_64.iso
```

the arch boot splash screen will appear in your terminal and you can 
tap the "tab" key to edit boot parameters

add "console=ttyS0" to kernel command line parameters

before
```bash
> .linux boot/x86_64/vmlinuz archisobasedir=arch archisolabel=ARCH_201802 initrd=boot/intel_ucode.img,boot/x86_64/archiso.img
```
after
```bash
> .linux boot/x86_64/vmlinuz archisobasedir=arch archisolabel=ARCH_201802 initrd=boot/intel_ucode.img,boot/x86_64/archiso.img console=ttyS0
```
![alt text](https://gist.githubusercontent.com/TrentSPalmer/57e9999a3a7aaecfd4dd8de3eca63a1b/raw/2018-02-13-051950_722x452_scrot.png)
```bash

arch boots ...
...
...
...

root@archiso ~ # lsblk
NAME  MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
loop0   7:0    0  432M  1 loop /run/archiso/sfs/airootfs
sr0    11:0    1  539M  0 rom  /run/archiso/bootmnt
vda   254:0    0   20G  0 disk 
root@archiso ~ # 
```