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Kroese 2023-04-18 22:13:50 +02:00 committed by GitHub
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@ -53,23 +53,23 @@ services:
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:
@ -80,7 +80,7 @@ $ docker run -it --rm -e "BOOT=http://www.example.com/image.iso" --device=/dev/k
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:
@ -107,7 +107,7 @@ $ docker run -it --rm -e "BOOT=http://www.example.com/image.iso" --device=/dev/k
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 \
@ -116,10 +116,10 @@ $ docker run -it --rm -e "BOOT=http://www.example.com/image.iso" --device=/dev/k
--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.