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Persistent Networks without running VMs
1. High level requirement
In CloudStack today in advanced zone, a VLAN ID is assigned and a network is created only when the first VM on that network is created. Till then, the network is only a DB entry and is not provisioned. Also, when the last VM is destroyed, the VLAN ID is released and the network is no longer available.
Details:
Customers like to have the ability to create a selected network in CloudStack and keep it running even when there are no VMs running. The use case is to deploy physical devices on that network.
Use Case:
- Users might want to create a VPC with one tier consisting of only physical devices. For example, they might create a VPC for a 3-tier application and deploy VMs for Web and App Tier and would like Physical machines for the DB Tier.
2. Requirements:
- Allow users to create networks either as part of VPC or in non-VPC environment. Once these networks are configured, allow users to enable the functionality to provision the network without any VMs on that network.
3. UI / UX Requirements
- UI should be changed to allow users to define and provision network with no VMs.
4 Upgrade Scenarios
Following upgrade scenarios should be supported:
- No upgrade scenarios need to be handled, as this is a new functionality.
5 Non-Requirements
6 Bugs
7 Open Items: