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Introduction to Abiquo and AWS

The Abiquo Amazon EC2 integration is a hybrid cloud feature that enables our customers to add Amazon public cloud regions to the Abiquo platform as part of our agnostic public cloud management. With the Abiquo hybrid cloud platform you will be able to offer a service that is a federation of Abiquo private clouds and the public cloud. Cloud tenants can deploy virtual resources in public cloud regions or in Abiquo datacenters through the same award-winning user interface. You can control the use of public cloud resources in the same way as in the Abiquo Datacenter (quotas, limits, etc).

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How Abiquo Creates a Virtual Private Cloud

In the AWS integration, Abiquo creates VPCs with NAT support with a public subnet, and allows VMs on different subnets to be connected to the same load balancer. Abiquo now supports the AWS gateway address as the first address in the network.

Abiquo now configures VPC networking Scenario 2 as described in the AWS documentation http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Scenario2.html. 
Under this configuration, users must attach Elastic IPs to VMs with a connection to the public subnet. And by default, VMs in private networks will have internet access through the public subnet. This is helpful for automation because a VM can now connect to the internet to download its configuration, for example, using Chef, without an Elastic IP.

VPC and Subnet

When you create an Abiquo virtual datacenter in an AWS public datacenter, Abiquo creates a VPC of size /16 and a subnet of size /24 (or as defined by the user). The default CIDR for the VPC and the subnet is 192.168.0.0, which is the default private network in Abiquo. You can set a custom private network in Abiquo and this network will be used to create the VPC and subnet in Abiquo. You can create multiple Abiquo private networks in different availability zones in the same VPC.

AWS Reserves IP Addresses

AWS reserves five IP addresses in your private networks. It reserves the first four IP addresses and the last IP address of the VPC private connect network. These IP addresses are not displayed or used by Abiquo. Therefore the first available IP address in a network that is defined to start with address 0, will be address 5, and the gateway address will be address 1.

For example, in the default_private_network with network address 192.168.0.0, the following addresses would be reserved or used as the gateway.

Internet Access

Abiquo creates a route table that is equivalent to the AWS route table with the values of the Abiquo private network. You can use the AWS NAT instance for Internet access from the Abiquo virtual datacenter private network. You can acquire floating public IPs for your virtual datacenter and in AWS, these will be created as Elastic IPs with public network addresses. Note that AWS may charge for Elastic IPs when they are NOT in use, i.e. when they are not assigned to a VM or when the VM is not deployed in AWS. You must assign the Elastic IPs to VMs with connections to the Public subnet. When creating a NAT gateway, Abiquo will reuse floating IPs that are not assigned to a VDC. 

Security

By default Abiquo assigns instances to the default VPC security group. This means that by default, all outbound traffic from instances is allowed. Enterprise administrators should configure an Abiquo firewall. Abiquo will create an AWS Security group in the VPC when this firewall is assigned to a virtual datacenter. Users can synchronize their firewalls with AWS, which will import existing security groups. The most basic configuration is to allow SSH inbound traffic, for example, port 22, which will allow SSH connections to the machine through a public IP, NAT, or from a private IP within the virtual datacenter. See AWS Security Groups as Abiquo Firewalls.

Number of IP Addresses per VM

Abiquo supports multiple IP addresses in the AWS integration. You can synchronize existing VMs with multiple IP addresses and create multiple IP addresses through Abiquo, including multiple Elastic IPs. 

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If the user adds multiple IPs in the same subnet, Abiquo adds them to the same elastic network interface. And if the IPs are in a different subnet, Abiquo adds them to a different elastic network interface. For information about Elastic Network Interfaces, see http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-eni.html

AWS Features

AWS Synchronization

AWS Firewalls and Load balancers

For general information, see Manage Firewalls and Load Balancers

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