diff --git a/sources/tech/20210126 Automate setup and delivery for virtual machines in the cloud.md b/sources/tech/20210126 Automate setup and delivery for virtual machines in the cloud.md new file mode 100644 index 0000000000..65f7fe07e8 --- /dev/null +++ b/sources/tech/20210126 Automate setup and delivery for virtual machines in the cloud.md @@ -0,0 +1,174 @@ +[#]: 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/