Merge branch... (f3ab73e1) · Commits · osm-doc / OSM User Guide

05-osm-usage.md

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		## How to perform Vertical Scaling of VNFs in OSM
		#### Functionality Overview
		- Vertical scaling allows you to dynamically adjust the resource allocation (CPU, memory, storage) of a deployed VNF instance to meet changing demands. This can improve resource utilization and application performance.
		Vertical scaling allows you to dynamically adjust the resource allocation (CPU, memory, storage) of a deployed VNF instance to meet changing demands. This can improve resource utilization and application performance.

		![vertical_scaling_of_VNFs](assets/vertical_scale.png)

		Workflow
		- Identify Scaling Need: Based on monitoring data or application requirements, determine the need to scale the VNF instance vertically.

		- Select New Flavor: Choose the appropriate flavor from the VNFD that offers the desired resource configuration (CPU, memory, storage) for the VNF.

		- Trigger Scaling Operation: Use the OSM client command or the NGUI interface to initiate the vertical scaling process.

		- OSM Processing: OSM validates the request and instructs the VIM (Virtual Infrastructure Manager) to adjust resource allocation for the VDU.

		- VNF Reconfiguration: The VIM reprovisions the VDU with the new flavor, potentially involving a software update on the VNF instance.

		- Verification: Once the scaling operation is complete, you can verify the new resource allocation of the VDU and the overall performance of the VNF instance.

		#### VNFD Requirements

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		- ![vertical_scale_update](assets/600px_vertical_scale_update.png)

		- ![vertical_scale_update2](assets/600px_vertical_scale_update_2.png)

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assets/vertical_scale.png

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