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Table of Contents

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Excerpt
nameIntroduction to allocation rules

The platform uses allocation rules to control the scheduling of resources in datacenters, although your virtualization technology must manage the use of the resources. For details of the allocation process, see the Virtual Machine Allocation section. 

There are two types of allocation rules: Global rules apply to all datacenters and Datacenter rules apply to the selected datacenter. 

Manage allocation rules with the API

Tip

API Documentation

For the Abiquo API documentation of this feature, see Abiquo API Resources and the page for this resource RulesResource.

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  1. Go to Infrastructure --> Private → select Datacenter → Allocation rules → Global

  2. Click the + add button

  3. Select Restrict shared server rule 

  4. Select the two enterprises that must not share a physical server. The cloud admin must configure the rules properly to customize VM deployments. 

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Note that you can also restrict servers by editing an enterprise in Users view. 

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Excerpt
nameCreate load level compute rules

To specify the CPU and RAM load on machines, use compute load level rules. The scheduler will use these rules to help determine if a physical machine is a candidate to hold a VM. 

Warning

The platform uses Load level rules to specify the level that the scheduler can assign to the virtualization technology. The virtualization technology is responsible for managing the load that is assigned

You can create load level rules for the following elements:

  • a datacenter (all racks)

  • a rack (all servers on the selected rack)

  • a cluster (for supported hypervisors)

  • a specific server 

You can only add one rule for an element at each level, but more than one rule may apply.

The priority order of rules is any cluster rule first (if it is present), then the other rules from the most specific rule to the least specific rule. A cluster rule affects all hosts in a cluster irrespective of their state, for example, it applies to hosts that are powered off.

To create a load level compute rule:

Privileges: Access infrastructure view and Private DCs, View datacenter details, Manage allocation rules

  1. Go to Infrastructure → Private → select a datacenter

  2. If you are in Map view or Statistics view, click the Server symbol in top right-hand corner to go to Servers view

  3. Go to Allocation rules

  4. On the Global pane, click the +add button

  5. For the Rule type, select Load level compute

    1. If you are using a cluster as a physical machine, to create rules for the cluster, select the Server option 

  6. Complete the dialog

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Field

Value

Rule type

Select Load level compute

Rack

Select All or a specific rack

Server

Select All or a specific server.

If you are using a cluster as a physical machine, to create rules for the cluster, select the Server option

Cluster

If you are using vCenter with ESXi, the platform detects the clusters. Select a specific cluster

A cluster rule affects all hosts irrespective of their state, for example, it applies to hosts that are powered off.

Aggregate

Select to create a rule for the sum of all resources in a group (datacenters, racks, or clusters). This means that the platform will sum all of the resources in the group and calculate the load level percentage of the total in order to determine the available resources for the group.

Service Port

The port used by the cloud nodes to connect to the storage technology

RAM

Percentage usage of memory to allow. We DO NOT recommend the overallocation of RAM

CPU cores

Percentage usage of CPU cores to allow. We DO NOT recommend the oversubscription of CPU cores

Create load level storage rules

Excerpt
nameCreate load level storage rules

To specify the storage load on machine datastores, use storage load level rules. The scheduler will use these rules to help determine if a physical machine is a candidate to hold a VM. 

You can create rules for the following elements:

  • A datacenter (all datastore tiers)

  • A tier (all datastores in a tier)

  • A specific datastore.

If there is more than one rule that applies to a datastore, the most specific rule takes precedence over more general rules.

To create a load level storage rule:

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Privileges: Access infrastructure view and Private DCs, View datacenter details, Manage allocation rules

  1. Go to Infrastructure → Private → select a datacenter

  2. If you are in Map view or Statistics view, click the Server symbol in top right-hand corner to go to Servers view

  3. Go to Allocation rules

  4. On the Global panel, click the + add button and complete the dialog

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Notes
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    1. For the Rule type, select Load level storage

    2. For the Datastore and Datastore tier select All or a specific tier

    3. For Storage, to limit the amount to use, enter a percentage (0 to 100%)

  2. Click Save

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The platform uses Load level rules to specify the level that the scheduler can assign to the virtualization technology. The virtualization technology is responsible for managing the load that is assigned

Redirect deployments with allocation rules

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