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Developers require a simple way of instantiating a working environment for OpenStack-Helm, that allows them to quickly begin development of the project. This is more complex to achieve than many OpenStack Projects that can simply rely upon a devstack plugin to achieve this. This is as OpenStack-Helm is focused on the deployment of OpenStack (and associated) Projects, rather than the development of the projects themselves, and also requires additional supporting infrastructure, e.g. Kubernetes and a CNI.
Development of OpenStack-Helm
PoC deployments of OpenStack-Helm
The OpenStack-Helm Zuulv2 gates were written to allow use outside of
OpenStack-Infra, to quickly set up a Kubernetes cluster, with the adoption of
Zuulv3 underway it is logical to extend this paradigm to the Zuulv3 Playbooks.
This will be driven via a
Makefile that will allow developers to perform the
Prepare Host(s) for OpenStack-Helm deployment
Deploy Kubernetes via KubeADM, with charts for CNI and DNS services
At this point, curated scripts will be used to deploy OpenStack-Helm services on demand as desired, with documentation provided to allow a new developer to quickly set up either a single or multimode deployment of a reference OpenStack Compute Kit environment with the addition of:
Ceph backed Object Storage
Ceph backed Block Storage (cinder)
Web UI (horizon)
A set of scripts will be provided to exercise the deployed environment that checks the basic functionality of the deployed cloud, driven where possible via OpenStack heat:
Create external network
Setup access to the external network from the development machine
Create tenant network
Create tenant router to link tenant network and external
Create SSH Key in nova
Create VM on tenant network
Assign Floating IP to VM
SSH into VM and check it can access the internet
This deployment process will be gated, to ensure that the development
the environment is consistently working against
master for the
There will be no security impact, as it will deploy the charts in OpenStack-Helm[-infra/-addons] upon a reference KubeADM administered cluster.
This feature will not affect the performance of OpenStack-Helm.
The alternative would be to continue supporting the current bash driven containerized KubeADM and Kubelet approach, though this has the following issues:
The containerized Kubelet cannot survive a restart, as it does not setup mounts correctly.
The bash scripts are largely undocumented and have grown to the point where they are very hard for a new developer to work on.
The move to Zuulv3 native operation of the OpenStack-Helm gates mean there would be no code reuse between the gate and developer environments, so supporting the existing code for Zuulv2 will incur significant tech-debt.
- Primary assignee:
portdirect (Pete Birley)
The following work items need to be completed for this Specification to be implemented.
Update of Developer Documentation
Update of Makefile for OpenStack-Helm-Infra to allow modular deployment of components
Develop scripts for bringing up OpenStack-Helm Charts and perform basic interactive tests
Add gate for developer environment
A gate will be added to OpenStack-Helm that runs through the developer environment deployment process.
The developer documentation in OpenStack-Helm should be updated to match the gated developer deploy process.