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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` Via `docker run`
```bash ```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 ## 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: sudo apt install cpu-checker
BOOT: "http://www.example.com/image.iso" 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: 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. 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 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. 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 \ $ 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 \ --ip-range=192.168.0.100/28 \
-o parent=eth0 vlan -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 --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.