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54 lines
1.5 KiB
Markdown
54 lines
1.5 KiB
Markdown
# qemu-docker
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[](https://travis-ci.org/joshkunz/qemu-docker)
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This repository contains a Docker container for running x86\_64 virtual
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machines using QEMU. It uses high-performance QEMU options
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(KVM, and TAP network driver).
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Docker Hub: [jkz0/qemu](https://hub.docker.com/r/jkz0/qemu)
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## Using the container
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Via `docker run`:
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```bash
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$ docker run --rm -it \
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--device=/dev/kvm:/dev/kvm --device=/dev/net/tun:/dev/net/tun \
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--cap-add NET_ADMIN -v $VM_IMAGE_FILE:/image \
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jkz0/qemu:latest
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```
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Via `docker-compose.yml`:
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```yaml
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version: "3"
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services:
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vm:
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image: jkz0/qemu:latest
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cap_add:
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- NET_ADMIN
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devices:
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- /dev/net/tun
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- /dev/kvm
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volumes:
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- ${VM_IMAGE:?VM image must be supplied}:/image
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restart: always
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```
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## Tips
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* VM networking is configured via DHCP, make sure to enable DHCP in your
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VM image. VMs will use the IP address of the container.
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* You can quit the VM (when attached to the container) by entering the special
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key sequence `C-a x`. Killing the docker container will also shut down the
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VM.
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## Caveat Emptor
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* Only x86\_64 supported new. PRs to support other architectures welcome,
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though I imagine 99% of use-cases will be x86\_64.
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* VMs will not be able to resolve container-names on user-defined bridges.
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This is due to the way Docker's "Embedded DNS" server works. VMs can still
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connect to other containers on the same bridge using IP addresses.
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