testcloud is a small helper script to download and boot cloud images locally. Currently, only Fedora qcow2 images are tested and supported.
Install the testcloud:
sudo dnf install testcloud
Add yourself to the testcloud group:
sudo usermod -a -G testcloud <username>
Restart your user session to update the group privileges, or use su - to get a login shell for that particular user where the group settings will be updated.
su -i <username>
Now, you are ready to use testcloud.
To create a new instance, you will need to provide the url of some cloud image in the qcow2 format. If you do not have an image location of your own, you can use the image from the Fedora Cloud download pages (https://alt.fedoraproject.org/cloud/).
To create a new instance with the cloud image, run:
testcloud instance create <instance name> -u <url for qcow2 image>
testcloud will download the qcow2 image and save it in the /var/lib/testcloud/backingstores/<qcow2-filename>. It will use this image a backing store for the newly created instance in /var/tmp/instances/<instance-name>. When the image has been already downloaded, testcloud will use the previously download image to create the instance.
You will be able to see the instance using the list command.
testcloud instance list
Note, that the above command will only list the running instances. To see all instances, use:
testcloud instance list --all
Alternatively, the instances can also be viewed and manipulated using the virt-manager tool.
Instances can be started and stopped using the instance interface of the testcloud, too:
List all instances to see the correct name of the instance:
testcloud instance list --all
Start the instance:
testcloud instance start <instance-name>
Stop the instance:
testcloud instance stop <instance-name>
Remove the instance:
testcloud instance remove <instance-name>
Removing the instance only succeeds when the appropriate instance has been stopped before. However, you can use the -f option to force removing the instance.
Reboot the instance:
testcloud instance reboot <instance-name>
Remove non-existing libvirt VMs from testcloud:
testcloud instance clean
When the instance is created, testcloud will return its IP address that you can use to access the running instance via ssh. The login name is fedora and the password is passw0rd.
ssh fedora@<instance-IP>
The IP address of an instance is also shown when you list the instance using the testcloud instance list command. You can also control the instance using the virt-manager tool.
There are several options (all optional) that can be used to create a new instance using testcloud.
| --ram RAM | To set the amount of RAM that will be available to the virtual machine (in MiB). |
| --no-graphic | This turns off the graphical display of the virtual machine. |
| --vnc | To open a VNC connection at the :1 display of the instance. |
| -u, --url URL | The URL from where the qcow2 image should be downloaded. This option is compulsory. |
| --timeout TIMEOUT | |
| A time (in seconds) to wait for boot to complete. Setting to 0 (default) will disable this functionality. | |
| --disksize DISKSIZE | |
| To set the disk size of the virtual machine (in GiB) |
The default configuration should work for many people but those defaults can
be overridden through the use of a settings.py file containing the values to
use when overriding default settings. The example file in
conf/settings-example.py shows the possible configuration values which can
be changed.
Note that in order for those new values to be picked up, the filename must be
settings.py and that file must live in one of the following locations:
conf/settings.py in the git checkout~/.config/testcloud/settings.py/etc/testcloud/settings.pyThere is a small testsuite you can run with:
tox
This is a good place to contribute if you're looking to help out.
Our project tracker is on the Fedora QA-devel Pagure instance.
Thanks to Oddshocks for the koji downloader code :)
This code is licensed GPLv2+. See the LICENSE file for details.