> ## Documentation Index
> Fetch the complete documentation index at: https://docs.xloud.tech/llms.txt
> Use this file to discover all available pages before exploring further.

# Host Aggregates

> Organize compute hosts into logical groups for workload placement and availability zones through the Xloud Dashboard.

## Overview

Navigate to **Compute > Host Aggregates** (admin view). The page has two tabs:
**Host Aggregate** (manage groups) and **Availability Zones** (read-only zone list).

***

## Create a Host Aggregate

Click **Create Host Aggregate**. The modal form includes:

| Field                 | Type           | Required            | Description                               |
| --------------------- | -------------- | ------------------- | ----------------------------------------- |
| **Name**              | Text           | Yes                 | Aggregate name                            |
| **Create New AZ**     | Radio (Yes/No) | Yes                 | Whether to create a new availability zone |
| **Availability Zone** | Dropdown       | If not creating new | Select existing zone                      |
| **New AZ Name**       | Text           | If creating new     | Name for the new zone                     |

***

## Manage Aggregates

| Action              | Location         | Description                                                                     |
| ------------------- | ---------------- | ------------------------------------------------------------------------------- |
| **Edit**            | First row action | Change name and availability zone                                               |
| **Manage Host**     | More dropdown    | Add/remove compute hosts (multi-select table showing Host, Zone, Status, State) |
| **Manage Metadata** | More dropdown    | Set key-value metadata for scheduler matching                                   |
| **Delete**          | More dropdown    | Delete the aggregate                                                            |

***

## Availability Zones

The **Availability Zones** tab shows a read-only list of all configured zones.
Zones are created through host aggregates — assign an aggregate to a zone name
to define a new availability zone.

<Note>
  For the complete scheduling and host aggregate reference, see
  [Compute Scheduling](/services/compute/scheduling).
</Note>

***

## Next Steps

<CardGroup cols={2}>
  <Card title="Compute Scheduling" href="/services/compute/scheduling" color="#197560">
    Complete host aggregate and scheduling reference
  </Card>

  <Card title="Availability Zones" href="/services/compute/availability-zones" color="#197560">
    Zone selection during instance launch
  </Card>

  <Card title="Compute Hosts" href="/services/compute/compute-hosts" color="#197560">
    Monitor hypervisor resources
  </Card>

  <Card title="Flavors" href="/services/dashboard/admin-guide/flavors" color="#197560">
    Create flavors with aggregate-matching extra specs
  </Card>
</CardGroup>