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Abiquo 2.6


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If you have permission to manage virtual datacenters, from the Virtual Datacenters view you can:

Button Action
Create a new Virtual Datacenter
Remove an existing Virtual Datacenter
Edit the selected Virtual Datacenter

Create a Virtual Datacenter

API Documentation

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

To create a new virtual datacenter, click the  button and complete the form:

Virtual Datacenter Networks

Abiquo offers several types of virtual datacenter networks (VLANs) that are described in the following table. Networks that are available in each type of datacenter are marked with a green checkmark  (tick) .

Network typeDescriptionControlDatacentersPublic Datacenters
PublicInternet addressable public IP addressesInfrastructure(tick) 
ExternalAssigned to an enterprise and can be accessed by more than one virtual datacenterInfrastructure(tick) 
UnmanagedReceive their IP addresses outside of AbiquoInfrastructure(tick)(tick) Elastic IPs (counted in public IP limits)
PrivateHave private IP addresses and are restricted to a single virtual datacenterVirtual datacenter(tick)(tick) Private Connect network
VDC Networks in Datacenters

When you create a virtual datacenter, a private network is always created and counted as part of your VLAN allocation limits. This private network can be the automatically-created private VLAN, named "default_network", or a custom private network.

If an external or unmanaged network is set as the default network for your enterprise in a datacenter, then this network will be set as the default network for your virtual datacenter, instead of the private network.

After you create a virtual datacenter, you can change the default network by editing the network and selecting the Default network option; see Manage Networks. You can set any type of network as the new default network, including a public network, if you have IP addresses reserved for the virtual datacenter.

VDC Networks in Public Datacenters

In a public datacenter, the default network is always a private network. When you create a virtual datacenter, you can choose the default private network or a custom private network configuration. This network is a Virtual Private Connect network in Amazon EC2, named vpc-XXXXXXXX:subnet-XXXXXXXXXX.

For a virtual datacenter in a public datacenter, the enterprise default external or unmanaged network will not be used.

You can add Elastic IPs to your virtual machines and Abiquo will automatically create an unmanaged network for your enterprise, named "Abiquo-elasticIPs", and include the Elastic IPs in this network. Elastic IPs will also counted as part of your public IP allocation limits.

Create a Virtual Datacenter with a Custom Private Network

Select the Custom option in Private Network configuration and complete this form.

You can manage the VLANs of your virtual datacenter in the Network tab; See Manage Networks.

Manage Allocation Limits for a Virtual Datacenter 

The allocation limits tab allows the administrator to limit the amount of physical and virtual resources a virtual datacenter may consume. This is very useful in preventing common problems on cloud platforms, including resource over allocation, virtual datacenters allocating resources from other virtual datacenters, and DoS attacks. Allocation limits also help system administrators to anticipate user needs and to forecast resource demands.

The cloud administrator can set the allocation limits for enterprises and then the enterprise administrator can set allocation limits for virtual datacenters.

Hard and Soft Limits
  • Hard Limit: The maximum amount of virtual resources (RAM, virtual CPU, local hard disk, external storage, VLANs and public IPs) that a virtual datacenter will be allowed to consume.
  • Soft Limit: This limit is always lower than the hard limit and it is used to alert users. When a virtual datacenter reaches the soft limit, users will see a warning that they are reaching the resource allocation limits for their virtual datacenter.

To manage the virtual datacenter allocation limits, click the Allocation Limits tab when creating your virtual datacenter and you will see the allocation limits panel.

Set VDC Allocation Limits

Screenshot: By default, access to resources is unlimited at virtual datacenter level, with all limits set to 0

 

By default there are no limits on a virtual datacenter. In the default configuration all limits are set to 0, as shown above. This means that the virtual datacenter will have no soft or hard limits. However, there may be enterprise or enterprise-datacenter hard or soft limits set too. Otherwise, users can access all of the resources available in the datacenter, rack and physical machines.

Screenshot: Hard and soft limits for virtual datacenter and Table: VDC Allocation Limits

After you set the limits, save the virtual datacenter.

Abiquo will create the virtual datacenter and the default private VLAN and display it in the Virtual Datacenters View.

Hard and Soft Limit Messages

This section describes the messages that users will receive when they reach the soft or hard limits in their virtual datacenter. The following screenshot shows some soft and hard limits for a very small virtual datacenter. As you can see, the soft limit is just one virtual CPU and the hard limit is 4 virtual CPUs.

Hard and Soft Limits

  • Remember that soft limits must be always lower than hard limits.
  • Limits equal to 0 means that there is no limit to resource usage.
Soft Limit Messages

If you try to deploy a virtual appliance with more than one CPU in this virtual datacenter, then the soft limits will be exceeded. You will see a pop-up that will allow you to to acknowledge the message and continue with the operation.

There are two types of soft limit messages, depending on the soft limit details message option on the General page of Configuration View 

If the soft limit details message option is selected on the General page of Configuration View, you will see this message.

 

If the soft limit details option is not selected, you will see a general message.

 

It is also possible to receive this message when enterprise soft limits have been reached or exceeded but virtual datacenter soft limits have not.

Hard Limit Messages

If you try to deploy a virtual appliance with more than four CPUs in this virtual datacenter, then the hard limits will be exceeded. You will see a pop-up that will allow you to to acknowledge the message and terminate the operation.

There are two types of hard limit messages, depending on the hard limit details message option on the General page of Configuration View 

If the hard limit details message option is selected on the General page of Configuration View, you will see this message.

 

If the soft limit details option is not selected, you will see a general message.

 

It is also possible to receive this message when enterprise hard limits have been exceeded but virtual datacenter hard limits have not been exceeded.

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