Golang-based libvirt CPI for BOSH with Multi-Runtime Support #1227
+41
−0
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
beyhan
requested review from
a team,
rkoster,
beyhan,
stephanme,
ameowlia and
ChrisMcGowan
and removed request for
a team
ZPascal
force-pushed
the
bosh-libvirt-cpi
branch
from
f84a1d5 to
4766fc2
Compare
maxmoehl
reviewed
Jun 30, 2025
| The existing VirtualBox CPI: | ||
| - Is minimally maintained and tied to a single backend (VBox). | ||
| - Has limited extensibility and runtime support. | ||
| - Is written in Ruby, with a legacy codebase that is harder to modernize. |
There was a problem hiding this comment.
This one is written in golang: https://github.com/cloudfoundry/bosh-virtualbox-cpi-release
| 3. Replacing the **VirtualBox CPI** as the first deliverable and reference implementation. | ||
| 4. Maintaining compatibility with the standard BOSH CPI contract interfaces (e.g., `create_vm`, `delete_vm`, `attach_disk`, etc.). | ||
| 5. Enabling backend configuration via BOSH runtime configs, selectable per environment. | ||
| 6. Publishing the CPI as an open-source component under the Cloud Foundry or BOSH community GitHub organization. |
There was a problem hiding this comment.
Suggested change
| 6. Publishing the CPI as an open-source component under the Cloud Foundry or BOSH community GitHub organization. | |
| 6. Publishing the CPI as an open-source component under the Cloud Foundry community GitHub organization. |
I think BOSH lives entirely in the CF org?
There was a problem hiding this comment.
Yes, the CPIs are basically all bosh- prefixed in the Cloud Foundry org such as https://github.com/cloudfoundry/bosh-google-cpi-release
|
I have some background written down here which might be of interest to give some context. |
rkoster
reviewed
Jul 1, 2025
| ### Overview | ||
|
|
||
| 1. **Developing a new Golang-based CPI** using libvirt-go to interface with local hypervisors or containers via libvirt. | ||
| 2. Supporting multiple backends (initially: VirtualBox, QEMU/KVM, containerd). |
There was a problem hiding this comment.
I could not find any references to containerd, there is however support for LXC: https://libvirt.org/drvlxc.html
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Description
This proposal introduces a new Cloud Provider Interface (CPI) for BOSH, implemented in Go and based on libvirt. It is intended as a modern, maintainable, and extensible alternative to the current VirtualBox CPI, supporting multiple virtualization backends, including VirtualBox, QEMU/KVM, and container runtimes (e.g., containerd). This libvirt-based CPI will serve as a centralized and runtime-agnostic integration layer for local or development BOSH deployments, with the initial milestone being to replace the existing VBox CPI.
Involved Working Groups:
@cloudfoundry/toc
@cloudfoundry/wg-foundational-infrastructure-vm-deployment-lifecycle-bosh-approvers
@cloudfoundry/wg-foundational-infrastructure-vm-deployment-lifecycle-bosh-reviewers