At OVHcloud, we make creating multiple instances easy by providing our customers with access to the OpenStack Horizon interface. In this article, we will show you how to use the OpenStack Horizon interface to streamline the creation of your instances.
Prerequisites
Topics
- Creating an Instance in the Horizon Interface
Creating an Instance in the Horizon Interface
To begin, log in to the OVHcloud Manager and click Public Cloud in the top-left corner of the page. Then, on the following screen, click the arrow button next to your project name in the top-left corner of the screen. Now select the project on which you wish to create your instances.
Click the Horizon button on the left-hand sidebar. You will be taken to the following screen. Use your Horizon credentials to log in. If you don't have these credentials, please check out our How to Create a Horizon User article for more information.
In the Horizon interface, under the Compute drop-down, click the Instances button to be taken to the following page:
On this page, click the Launch instance button to begin creating your instance. If you need help filling out the options, you can use the table below.
| Information | Details |
|---|---|
| Availability zone | Leave "nova" (default choice). |
| Instance name | Specify the name you want for the instance that will be launched. |
| Template | Select the type of instance to launch. |
| Count | Specify the number of instances to launch. |
| Instance launch source | Select the source for launching an instance (e.g. "Launch from an image" or "Launch from a snapshot"). |
| Image name | Select the Instance image (only when launching from an image). |
| Instance snapshot | Choose an Instance snapshot (only for launching from a snapshot). |
| Key pair | Select an SSH key to use for connecting to the instance later (you can create a key by clicking the "+" sign). |
| Security groups | Specify the security group for the instance (authorization for opening ports). |
| Selected networks | Select the network(s) for the instance you want to create, from the list of available networks. |
| Custom script source | Specify the source between a "direct entry" or a "file". |
| Script data | Enter the script code into the input field (16KB maximum). |
| Script file | Click ‘browse’ to select the post-installation script. |
| Disk partitioning | Choose between "automatic" or "manual". |
| Configuration disk | Configure OpenStack to write metadata on to a specific configuration disk that will be attached to the instance when it is launched. |
Once you are ready to launch the instances, click the Launch Instance button.
Depending on how many instances you created, it can take some time for the process to finish.
Conclusion
Now that you have read this article, you should know how to create multiple instances at a time in Horizon.