nova flavor-create --help

OpenStack Flavor Calculator

Enter your workload requirements and get the correct Nova flavor name, resource sizing, and the exact CLI command to create it — instantly. No guessing at RAM:vCPU ratios.

Nova API
OpenStack CLI
Legacy Nova CLI
NUMA Support
Overcommit Aware
Free · No Signup
Workload Specification
Workload Type // sets target CPU:RAM ratio
General Purpose
Compute Heavy
Memory Heavy
Database
Web Server
Big Data
GPU / AI/ML
vCPU // cores
RAM // GB
Root Disk // GB
Ephemeral // GB
Swap // MB (0 = none)
Load Profile
Bursty / Dev Steady State Sustained Max
Host CPU Overcommit // typical: 2–4
CPU Policy // NUMA / latency sensitive
Shared (default)
Dedicated (pinned)
RNG / Trusted // security
None
Hardware RNG
Quick Reference
Recommended Flavor
$ openstack flavor create ...
Configure your workload on the left
and click Calculate Flavor
to generate your Nova flavor
Ratio Analysis
RAM per vCPU
—
Disk / RAM ratio
—
Effective vCPUs on host
—
Recommended range
—
Flavor category
—
Sizing verdict
—