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.
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