KVM notes

Via `docker run`

```bash

$ docker run -it --rm -e "BOOT=http://www.example.com/image.iso" --device=/dev/kvm --cap-add NET_ADMIN kroese/docker-qemu:latest

docker run -it --rm -e "BOOT=http://www.example.com/image.iso" --device=/dev/kvm --cap-add NET_ADMIN kroese/docker-qemu:latest

```

## FAQ

  * ### How do I change the bootdisk? ###

  * ### How do I check if my system supports KVM?

    You can modify the `BOOT` setting to specify the URL of any ISO image:

    To check if your system supports KVM run these commands:

    ```

    environment:

      BOOT: "http://www.example.com/image.iso"

    sudo apt install cpu-checker

    sudo kvm-ok

    ```

    It will be downloaded only once, during the first run of the container.

    If `kvm-ok` returns an error stating KVM acceleration cannot be used, you may need to change your BIOS settings.

  * ### How do I change the size of the data disk? ###

  * ### How do I change the size of the virtual disk? ###

    By default it is 16GB, but you can modify the `DISK_SIZE` setting in your compose file:

    To resize the disk to a capacity of 8 terabyte you would use a value of `"8T"` for example.

  * ### How do I change the location of the data disk? ###

  * ### How do I change the location of the virtual disk? ###

    By default it resides inside a docker volume, but you can add these lines to your compose file:

    By default the container uses bridge networking, and is reachable by the IP of the docker host. 

    If you want to give it a seperate IP address, create a macvlan network that matches your local subnet:

    If you want to give it a seperate IP address, create a macvlan network that matches your local subnet, for example:

    ```

    $ docker network create -d macvlan \

        --ip-range=192.168.0.100/28 \

        -o parent=eth0 vlan

    ```

    And change the network of the container to `vlan` in your run command:

    And change the network of the container to `vlan` in your run command or compose file:

    ```

     --network vlan --ip=192.168.0.100

    ```

    This has the advantage that you don't need to do any portmapping anymore.

    This also has the advantage that you don't need to do any portmapping anymore.