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WIP - draft

Introduction

In order to identify issues within CloudStack, a CloudStack admin would go through various resources such as zones/clusters/hosts/storage pool or with VMs or volumes, using a CLI or some other tool/script to find CPU/Memory/Disk/Network usage of that resource to figure out if that resource is exhausted, or having issues for example host is down, storage pool is full etc. The metrics view aims to solve that problem by showing metrics information for these resources which would allow hierarchical navigation to triage issue (for example, Zone -> Cluster -> Host -> Instances -> Volumes, Storage Pool -> Volumes), allow common operation (like quick view), mark threshold data (such as coloring a tabular cell for resources that have reached notification/disable threshold), allow data to be sorted and refreshed.

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