GSoC 2021 Idea: Synchronization of network devices on newly added hosts for Persistent Networks

[Pearl1594]

Background

Cloudstack offers Persistent Networks which gets provisioned at the time of creation without having to deploy a VM in the network (http://docs.cloudstack.apache.org/en/latest/adminguide/networking/persistent_networks.html). However, in case new hosts are added or disabled hosts re-enabled or moved from maintenance mode to enabled state, the network devices do not get provisioned on such hosts.
To comply with the definition of Persistent Networks, we need to have a mechanism to synchronize the creation of network devices (VLANs/ bridges, etc) on hosts added post creation of the network by extending the existing framework of HypervisorHostListener to support creation of Persistent networks in a general manner .

This would involve:

• Scanning for hosts that have been added post creation of the network
• Scanning for hosts that have transitioned to Active state post creation of network

Proposed Tasks

• Get started on basic CloudStack codebase and development (building and running CloudStack)
• Understanding persistence in the context of CloudStack and across hypervisors
• Define strategy to identify hosts that don't have the resources (bridges,etc) provisioned on them
• Define strategy to provision networks across identified hosts
• Deliverables: documentation and community pull request, end-to-end demo of feature

Relevant Skills

Java and Python

Difficulty

Moderate

Proposed Mentor

Pearl Dsilva - pearl.dsilva@shapeblue.com
Rohit Yadav - rohit@apache.org

Example and references

https://github.com/apache/cloudstack/blob/master/engine/api/src/main/java/org/apache/cloudstack/engine/subsystem/api/storage/HypervisorHostListener.java

[shatoboar]

Hi, I would really like to work on this project! Is there any further information or any tips to better understand the project?

[Pearl1594]

@shatoboar I've sent a mail with details that would be helpful to understand the project and the requirements. All the best! :) Feel free to reach out if you have any queries.

[yadvr]

Hi @shatoboar thanks for your interest.

I would advise that you read the community GSoC guidelines (https://community.apache.org/gsoc.html), join the dev mailing list (http://cloudstack.apache.org/mailing-lists.html) to discuss your GSoC idea/proposal/application, and start drafting your application (for example https://google.github.io/gsocguides/student/proposal-example-1). With your proposed mentor (see email above), start an early discussion with them and you can ask them to review your application draft (for example, compose your draft and share with a Google doc).

You can refer to the CloudStack course to help you draft your application and learn how to build something in CloudStack https://github.com/shapeblue/hackerbook

[JushwanthGV]

Hi,
I'm interested in this project, and I'm new to open source I would like to include this project for gsoc.
Can anyone help me with how to start?
I would like to know all the requirements needed for this project so that i can be ready for this project.
I would like some tips and some more insights abt this project.

[Pearl1594]

Hi @JushwanthGV , thanks for your interest!
To start off, you can work on drafting your application / project proposal and may use https://google.github.io/gsocguides/student/proposal-example-1 as a guideline. And reach out if you need further details. Please also go through the GSoC guidelines - https://community.apache.org/gsoc.html - if you haven't already.

[yadvr]

Closing this as we've a PR, and this may cause confusion for student looking for gsoc ideas.