Andrey Kolkov
33fa5e51b0
Two defects that break the etcd-operator on an in-cluster 1.5 -> 1.6 upgrade (#2859 swapped the upstream chart for the cozystack-authored one): - #3242: the controller Deployment's spec.selector.matchLabels changed ({instance,name} -> {name,control-plane}). spec.selector is immutable, so `helm upgrade` cannot patch the existing Deployment and the whole HelmRelease upgrade fails ("field is immutable") -- the operator and the v1alpha2 CRDs it serves never come up, which blocks the etcd v1alpha2 adoption. Fresh installs use the new selector directly, so fresh-install CI does not catch it. Add a pre-upgrade hook that deletes the Deployment ONLY when its live selector is the pre-1.6 one (lacks control-plane=controller-manager), so Helm recreates it cleanly. No-op when the selector already matches (rc.1 -> later) and never runs on a fresh install (pre-upgrade only). Keeping the selector stable in the chart is not an option: rc.1 already shipped the new selector, so aligning it back would merely move the immutable break to rc.1 -> next. - Raise the manager's cold-start memory limit floor 128Mi -> 256Mi (and the VPA minAllowed to match). The steady-state working set is ~250Mi (the VPA's own recommendation); at 128Mi a Pod that starts before the VPA admission webhook rewrites it (e.g. a Deployment recreated out of band, or the webhook briefly unavailable during upgrade) OOMKills into a crash loop. Defense in depth so the operator never depends on VPA timing merely to avoid crashing; the VPA still scales it further under load up to maxAllowed. Verified live on a 1.5 -> 1.6 adoption: the delete-Deployment step plus the VPA re-applying 256Mi+ let the operator come up and the adoption complete. Refs: #3242, #3243 Signed-off-by: Andrey Kolkov <androndo@gmail.com>
Cozystack
Cozystack is a free platform and framework for building clouds.
Cozystack is a CNCF Sandbox Level Project that was originally built and sponsored by Ænix.
With Cozystack, you can transform a bunch of servers into an intelligent system with a simple REST API for spawning Kubernetes clusters, Database-as-a-Service, virtual machines, load balancers, HTTP caching services, and other services with ease.
Use Cozystack to build your own cloud or provide a cost-effective development environment.
Use-Cases
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Using Cozystack to build a public cloud
You can use Cozystack as a backend for a public cloud -
Using Cozystack to build a private cloud
You can use Cozystack as a platform to build a private cloud powered by Infrastructure-as-Code approach -
Using Cozystack as a Kubernetes distribution
You can use Cozystack as a Kubernetes distribution for Bare Metal
Documentation
The documentation is located on the cozystack.io website.
Read the Getting Started section for a quick start.
If you encounter any difficulties, start with the troubleshooting guide and work your way through the process that we've outlined.
Versioning
Versioning adheres to the Semantic Versioning principles.
A full list of the available releases is available in the GitHub repository's Release section.
Contributions
Contributions are highly appreciated and very welcomed!
In case of bugs, please check if the issue has already been opened by checking the GitHub Issues section. If it isn't, you can open a new one. A detailed report will help us replicate it, assess it, and work on a fix.
You can express your intention to on the fix on your own. Commits are used to generate the changelog, and their author will be referenced in it.
If you have a concrete feature request, open an issue. For a cross-cutting or architectural change, open a design proposal in the community repo. For questions or early ideas, use GitHub Discussions. See CONTRIBUTING.md for the full routing.
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License
Cozystack is licensed under Apache 2.0.
The code is provided as-is with no warranties.
Commercial Support
A list of companies providing commercial support for this project can be found on official site.