mirror of
https://github.com/edgelesssys/constellation.git
synced 2024-12-18 04:14:33 -05:00
46 lines
2.3 KiB
Markdown
46 lines
2.3 KiB
Markdown
# Local image testing with QEMU
|
|
|
|
> Note: This document describes a manual method of deploying VMs with QEMU look at [terraform/libvirt](/terraform/libvirt) for an automated alternative.
|
|
|
|
To build our images we use the [CoreOS-Assembler (COSA)](https://github.com/edgelesssys/constellation-coreos-assembler).
|
|
COSA comes with support to test images locally. After building your image with `make coreos` you can run the image with `make run`.
|
|
|
|
Our fork adds extra utility by providing scripts to run an image in QEMU with a vTPM attached, or boot multiple VMs to simulate your own local Constellation cluster.
|
|
|
|
Begin by starting a COSA docker container
|
|
```shell
|
|
docker run -it --rm \
|
|
--entrypoint bash \
|
|
--device /dev/kvm \
|
|
--device /dev/net/tun \
|
|
--privileged \
|
|
-v </path/to/constellation-image.qcow2>:/constellation-image.qcow2 \
|
|
ghcr.io/edgelesssys/constellation-coreos-assembler
|
|
```
|
|
|
|
## Run a single image
|
|
|
|
Using the `run-image` script we can launch a single VM with an attached vTPM.
|
|
The script expects an image and a name to run. Optionally one may also provide the path to an existing state disk, if none provided a new disk will be created.
|
|
|
|
Additionally one may configure QEMU CPU (qemu -smp flag, default=2) and memory (qemu -m flag, default=2G) settings, as well as the size of the created state disk in GB (default 2) using environment variables.
|
|
|
|
To customize CPU settings use `CONSTELL_CPU=[[cpus=]n][,maxcpus=maxcpus][,sockets=sockets][,dies=dies][,cores=cores][,threads=threads]` \
|
|
To customize memory settings use `CONSTELL_MEM=[size=]megs[,slots=n,maxmem=size]` \
|
|
To customize state disk size use `CONSTELL_STATE_SIZE=n`
|
|
|
|
Use the following command to boot a VM with 2 CPUs, 2G RAM, a 4GB state disk with the image in `/constellation/coreos.qcow2`.
|
|
Logs and state files will be written to `/tmp/test-vm-01`.
|
|
```shell
|
|
sudo CONSTELL_CPU=2 CONSTELL_MEM=2G CONSTELL_STATE_SIZE=4 run-image /constellation/coreos.qcow2 test-vm-01
|
|
```
|
|
|
|
The command will create a network bridge and add the VM to the bridge, so the host may communicate with the guest VM, as well as allowing the VM to access the internet.
|
|
|
|
Press <kbd>Ctrl</kbd>+<kbd>A</kbd> <kbd>X</kbd> to stop the VM, this will remove the VM from the bridge but will keep the bridge alive.
|
|
|
|
Run the following to remove the bridge.
|
|
```shell
|
|
sudo delete_network_bridge br-constell-0
|
|
```
|