gardener-extension-provider-openstack

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Version: v1.30.3 Latest Latest
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Published: Dec 6, 2022 License: Apache-2.0, MIT

README

Gardener Extension for OpenStack provider

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Project Gardener implements the automated management and operation of Kubernetes clusters as a service. Its main principle is to leverage Kubernetes concepts for all of its tasks.

Recently, most of the vendor specific logic has been developed in-tree. However, the project has grown to a size where it is very hard to extend, maintain, and test. With GEP-1 we have proposed how the architecture can be changed in a way to support external controllers that contain their very own vendor specifics. This way, we can keep Gardener core clean and independent.

This controller implements Gardener's extension contract for the OpenStack provider.

An example for a ControllerRegistration resource that can be used to register this controller to Gardener can be found here.

Please find more information regarding the extensibility concepts and a detailed proposal here.

Supported Kubernetes versions

This extension controller supports the following Kubernetes versions:

Version Support Conformance test results
Kubernetes 1.25 1.25.0+ N/A
Kubernetes 1.24 1.24.0+ Gardener v1.24 Conformance Tests
Kubernetes 1.23 1.23.0+ Gardener v1.23 Conformance Tests
Kubernetes 1.22 1.22.0+ Gardener v1.22 Conformance Tests
Kubernetes 1.21 1.21.0+ Gardener v1.21 Conformance Tests
Kubernetes 1.20 1.20.0+ Gardener v1.20 Conformance Tests
Kubernetes 1.19 1.19.0+ Gardener v1.19 Conformance Tests
Kubernetes 1.18 1.18.0+ Gardener v1.18 Conformance Tests
Kubernetes 1.17 1.17.0+ Gardener v1.17 Conformance Tests

Please take a look here to see which versions are supported by Gardener in general.


Compatibility

The following lists known compatibility issues of this extension controller with other Gardener components.

OpenStack Extension Gardener Action Notes
< v1.12.0 > v1.10.0 Please update the provider version to >= v1.12.0 or disable the feature gate MountHostCADirectories in the Gardenlet. Applies if feature flag MountHostCADirectories in the Gardenlet is enabled. This is to prevent duplicate volume mounts to /usr/share/ca-certificates in the Shoot API Server.

How to start using or developing this extension controller locally

You can run the controller locally on your machine by executing make start.

Static code checks and tests can be executed by running make verify. We are using Go modules for Golang package dependency management and Ginkgo/Gomega for testing.

Feedback and Support

Feedback and contributions are always welcome. Please report bugs or suggestions as GitHub issues or join our Slack channel #gardener (please invite yourself to the Kubernetes workspace here).

Learn more!

Please find further resources about out project here:

Directories

Path Synopsis
gardener-extension-provider-openstack
Package chart enables go:generate support for generating the correct controller registration.
Package chart enables go:generate support for generating the correct controller registration.
cmd
Package example contains generated manifests for all CRDs and other examples.
Package example contains generated manifests for all CRDs and other examples.
pkg
apis/config/v1alpha1
Package v1alpha1 contains the OpenStack provider configuration API resources.
Package v1alpha1 contains the OpenStack provider configuration API resources.
apis/openstack/v1alpha1
Package v1alpha1 contains the OpenStack provider API resources.
Package v1alpha1 contains the OpenStack provider API resources.
cmd
openstack/client/mocks
Package mocks is a generated GoMock package.
Package mocks is a generated GoMock package.
test
tm
package contains the generators for provider specific shoot configuration
package contains the generators for provider specific shoot configuration

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