Instance

This document explains how to create an instance (virtual machine). An instance is a virtual server running in the cloud. Users can choose their desired operating system and configure the resources as needed.

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Creating an Instance

This section walks you through the step-by-step process of creating an instance in OpenStack.

Basic Settings

Availability Zone

• From the left-hand menu, go to Compute -> Instances
• Click the Launch Instance button.

Availability Zone

• Project: The current project is selected automatically.
• Availability Zone: Select nova.

Select Instance Flavor

• Choose a flavor that fits GPU Cloud usage.
• In this guide, we select gpu.xlarge, which provides 16 vCPUs and 32GB of memory.

Configure Source Image

Choose Operating System

• Select your preferred OS (e.g., Ubuntu, CentOS, Windows).
• Confirm the image version.

Set Volume Size

• System Disk: Set to 20GB by default.
• Data Disk: Add additional volumes if needed.

Configure Network

Select Network

• Select the Internal network.

Security Group

• The default security groupdefault is assigned automatically.

Configure Key Pair

Set Key Pair

• You must set a key pair to access the instance via SSH.
• If you do not have a key pair, you can create one on the Key Pair Creation Page.

Review and Launch

Final Review

• Review all the settings.
• Confirm the instance name, flavor, and network settings.

Launch Instance

• Click the Launch button to create the instance.

Important Notes

Resource Quotas

• Check the available quota limits for your project.

Network Settings

• Make sure the security group rules are properly configured.

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Assigning an External IP

Associate an External IP

• In the instance list, select your instance.
• Click More Actions on the right and choose Associate Floating IP.

IP Configuration

• Select an available external IP from the external network.
• Click the Associate button to complete the assignment.