Amazon VPC vs OpenStack: What are the differences?
What is Amazon VPC? Provision a logically isolated section of the AWS Cloud and launch AWS resources in a virtual network that you define. You have complete control over your virtual networking environment, including selection of your own IP address range, creation of subnets, and configuration of route tables and network gateways. You can easily customize the network configuration for your Amazon VPC.
What is OpenStack? Open source software for building private and public clouds. OpenStack is a cloud operating system that controls large pools of compute, storage, and networking resources throughout a datacenter, all managed through a dashboard that gives administrators control while empowering their users to provision resources through a web interface.
Amazon VPC belongs to "Virtual Private Cloud" category of the tech stack, while OpenStack can be primarily classified under "Open Source Cloud".
Some of the features offered by Amazon VPC are:
- Create an Amazon Virtual Private Cloud on AWS's scalable infrastructure, and specify its private IP address range from any range you choose.
- Divide your VPC’s private IP address range into one or more public or private subnets to facilitate running applications and services in your VPC.
- Control inbound and outbound access to and from individual subnets using network access control lists.
On the other hand, OpenStack provides the following key features:
"Secure" is the top reason why over 39 developers like Amazon VPC, while over 35 developers mention "Private cloud" as the leading cause for choosing OpenStack.
According to the StackShare community, Amazon VPC has a broader approval, being mentioned in 300 company stacks & 79 developers stacks; compared to OpenStack, which is listed in 67 company stacks and 50 developer stacks.
What is Amazon VPC?
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VPC launched in mid 2009 as a companion product to the existing EC2 offering, though it quickly became considered to be EC2 2.0, as it remedied many of the commonly accepted EC2 downfalls. At face value, the migration didn’t seem conceptually difficult, as VPC was just another software abstraction on top of the same hardware, yet it was much more complex, with a few main issues:
- You cannot migrate a running instance.
- AWS offers no migration plan.
- EC2 and VPC do not share security groups.
This last point lingered in our heads as we tried to come up with a solution. What would it take to make EC2 and VPC talk to each other as if the security groups could negotiate? It seemed insurmountable: we had thousands of running instances in EC2 and we could not take any downtime. We were looking for a solution that would allow us to migrate at our own pace, moving partial and full tiers as needed, with secure communication between both sides.
So, we created Neti, a dynamic iptables-based firewall manipulation daemon, written in Python, and backed by Zookeeper.
Our architecture is running in Amazon VPC. That's actually what we started with and we're still very happy with. We’re pretty much tied into the entire platform.
The DB and some servers on a separate sub-net in the VPC. This ensures access to these servers are denied from any other machine than the VPC.
IaaS for our core private cloud, and with AWS, HP Helion, and Rackspace to burst to public clouds to create a multi-sourced hybrid cloud setup.
With VCP, you can secure and segment your nodes.
It is easy to manage, flexible, and gives great control over your virtual infrastructure.
Build & Deployment tools; Development, Sandbox and Business Continuity environments; ad hoc processing workers
필자가 온갖 서버사이드 지식들을 삽질하고 익힐 수 있었던 가장 큰 이유. 현대 퍼블릭/프라이빗 클라우드 환경을 막론하고 가장 표준이 되는 클라우드 플랫폼이다.