[installer]: validate that cluster meets minimum kubernetes version

[mrsimonemms]

Description

Validate that the min Kubernetes version should be 1.21.0-0 - using pre-release to allows for providers adding their own patch to the version

Related Issue(s)

Fixes #6828

How to test

gitpod-installer validate cluster --kubeconfig /path/to/kubeconfig

Release Notes

Validate cluster min k8s version

Documentation

[codecov]

Codecov Report

Merging #6926 (16af0f2) into main (1ed5952) will decrease coverage by 27.84%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main   #6926       +/-   ##
==========================================
- Coverage   33.68%   5.84%   -27.85%     
==========================================
  Files         104      13       -91     
  Lines       18997    1147    -17850     
==========================================
- Hits         6400      67     -6333     
+ Misses      12074    1079    -10995     
+ Partials      523       1      -522     

Flag	Coverage Δ
components-content-service-app	?
components-content-service-lib	?
components-ee-ws-scheduler-app	?
components-ee-ws-scheduler-lib	?
components-ide-code-desktop-status-app	?
components-image-builder-app	?
components-image-builder-mk3-app	?
components-local-app-app-darwin-amd64	?
components-local-app-app-darwin-arm64	?
components-local-app-app-linux-amd64	?
components-local-app-app-linux-arm64	?
components-local-app-app-windows-386	?
components-local-app-app-windows-amd64	?
components-local-app-app-windows-arm64	?
components-supervisor-app	?
components-workspacekit-app	?
components-ws-daemon-app	?
components-ws-daemon-lib	?
components-ws-manager-api-go-lib	?
components-ws-manager-app	?
components-ws-proxy-app	?
dev-loadgen-app	?
installer-raw-app	5.84% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
components/ws-daemon/pkg/resources/dispatch.go
components/ws-proxy/pkg/proxy/pass.go
components/supervisor/pkg/supervisor/user.go
components/ws-manager/pkg/manager/annotations.go
components/ee/ws-scheduler/pkg/scheduler/state.go
...onents/content-service/pkg/initializer/snapshot.go
components/ee/ws-scheduler/pkg/scaler/driver.go
components/supervisor/pkg/ports/slirp4netns.go
components/ws-daemon/pkg/quota/xfs.go
components/supervisor/pkg/ports/served-ports.go
... and 81 more

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[mrsimonemms]

@csweichel I've applied the check on the Kubernetes version as requested. I've also kept a check on a per-node basis. As I see it, we have the following options:

1. use KubeletVersion
2. use KubeProxyVersion
3. do nothing

I must confess, I don't know the difference between 1 and 2 but it feels like 3 might cause problems - it's possible to have the control pane on one version, but the individual nodes on a different (lower) version.

I'm open to suggestions

[csweichel]

I reckon we could merge this change as is and see how the version check fairs in the wild.
There's a minor nit, but feel free to unhold and fix in a later PR.

/hold
/approve
/lgtm

[roboquat]

LGTM label has been added.

Git tree hash: ee85a296cf4c5bc8a7b613c3aaac80eac23cb642

[csweichel]

/lgtm

[roboquat]

LGTM label has been added.

Git tree hash: 27550a8e92a99f63a15667210bffa117391a94ee

[roboquat]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: csweichel

Associated issue: #6828

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• installer/OWNERS [csweichel]

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[mrsimonemms]

/unhold