[#]: collector: (lujun9972) [#]: translator: ( ) [#]: reviewer: ( ) [#]: publisher: ( ) [#]: url: ( ) [#]: subject: (Automate setup and delivery for virtual machines in the cloud) [#]: via: (https://opensource.com/article/21/1/testcloud-virtual-machines) [#]: author: (Sumantro Mukherjee https://opensource.com/users/sumantro) Automate setup and delivery for virtual machines in the cloud ====== Get a cloud image ready in minutes by using Testcloud to automate the setup process and deliver a VM ready to run. ![Looking at a map][1] If you're a developer or hobbyist using a Fedora [qcow2 image][2] for the cloud, you always have to do a bunch of initial configuration before an image is ready to use. I know this all too well, and I was eager to find a way to make the setup process simpler. As it happens, the entire Fedora quality assurance team feels the same way, so we developed [Testcloud][3]. Testcloud is a tool that makes it easy to get a cloud image ready for testing in minutes. It automates the setup process and delivers a virtual machine (VM) ready to run on the cloud with just a few commands.  Testcloud: 1. Downloads the qcow2 image 2. Creates the instance with the name of your choice 3. Creates a user named `fedora` with the password of `passw0rd` 4. Assigns an IP, which you can later use to secure shell (SSH) into the cloud 5. Starts, stops, removes, and lists an instance ### Install Testcloud To start your journey, you first must install the Testcloud package. You can install it from a terminal or through the software application. In both cases, the package name is `testcloud`. Install with: ``` `$ sudo dnf install testcloud -y` ``` Once the installation is complete, add your desired user to the `testcloud` group, which helps Testcloud automate the rest of the process. Execute these two commands to add your user to the `testcloud` group and restart the session with the updated group privileges: ``` $ sudo usermod -a -G testcloud $USER $ su - $USER ``` ![Add user to testcloud group][4] (Sumantro Mukherjee, [CC BY-SA 4.0][5]) ### Spin cloud images like a pro Once your user has the required group permissions, create an instance: ``` `$ testcloud instance create -u ` ``` Alternatively, you can use `fedora:latest/fedora:XX` (where `XX` is your Fedora release) instead of the full URL: ``` `$ testcloud instance create -u fedora:latest` ``` This returns the IP address of your VM: ``` $ testcloud instance create testcloud272593 -u   [...] INFO:Successfully booted instance testcloud272593 The IP of vm testcloud272593:  192.168.122.202 \------------------------------------------------------------ To connect to the VM, use the following command (password is 'passw0rd'): ssh fedora@192.168.122.202 \------------------------------------------------------------ ``` You can log in as the default user `fedora` with the password `passw0rd` (note the zero). You can get to the VM with `ssh`, `virt-manager`, or any other method that supports connecting to libvirt machines. Another simple way to create a Fedora cloud is: ``` $ testcloud instance create testcloud193 -u fedora:33   WARNING:Not proceeding with backingstore cleanup because there are some testcloud instances running. You can fix this by following command(s): testcloud instance stop testcloud272593 DEBUG:Local downloads will be stored in /var/lib/testcloud/backingstores. DEBUG:successfully changed SELinux context for image /var/lib/testcloud/backingstores/Fedora-Cloud-Base-33-1.2.x86_64.qcow2 DEBUG:Creating instance directories DEBUG:creating seed image /var/lib/testcloud/instances/testcloud193/testcloud193-seed.img INFO:Seed image generated successfully INFO:Successfully booted instance testcloud193 The IP of vm testcloud193:  192.168.122.225 \------------------------------------------------------------ To connect to the VM, use the following command (password is 'passw0rd'): ssh fedora@192.168.122.225 \------------------------------------------------------------ ``` ### Play with instances Testcloud can be used to administer instances. This includes activities such as listing images or stopping and starting an instance. To list instances, use the `list` subcommand: ``` $ testcloud instance list                 Name                            IP                      State     \------------------------------------------------------------ testcloud272593                 192.168.122.202         running     testcloud193                    192.168.122.225         running     testcloud252793                 192.168.122.146         shutoff     testcloud93                             192.168.122.152         shutoff ``` To stop a running instance: ``` $ testcloud instance stop testcloud193   DEBUG:stop instance: testcloud193 DEBUG:stopping instance testcloud193. ``` To remove an instance: ``` $ testcloud instance destroy testcloud193   DEBUG:remove instance: testcloud193 DEBUG:removing instance testcloud193 from libvirt. DEBUG:Unregistering instance from libvirt. DEBUG:removing instance /var/lib/testcloud/instances/testcloud193 from disk ``` To reboot a running instance: ``` $ testcloud instance reboot testcloud93                                                                                         DEBUG:stop instance: testcloud93 [...] INFO:Successfully booted instance testcloud93 The IP of vm testcloud93:  192.168.122.152 usage: testcloud [-h] {instance,image} ... ``` Give Testcloud a try and let me know what you think in the comments. -------------------------------------------------------------------------------- via: https://opensource.com/article/21/1/testcloud-virtual-machines 作者：[Sumantro Mukherjee][a] 选题：[lujun9972][b] 译者：[译者ID](https://github.com/译者ID) 校对：[校对者ID](https://github.com/校对者ID) 本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出 [a]: https://opensource.com/users/sumantro [b]: https://github.com/lujun9972 [1]: https://opensource.com/sites/default/files/styles/image-full-size/public/lead-images/tips_map_guide_ebook_help_troubleshooting_lightbulb_520.png?itok=L0BQHgjr (Looking at a map) [2]: https://en.wikipedia.org/wiki/Qcow [3]: https://pagure.io/testcloud [4]: https://opensource.com/sites/default/files/uploads/adduser.png (Add user to testcloud group) [5]: https://creativecommons.org/licenses/by-sa/4.0/