feat: add support for gke clusterclass #1442
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Signed-off-by: Carlos Salas <[email protected]>
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Still work-in-progress but would appreciate any comments/reviews.
What type of PR is this?
/kind feature
What this PR does / why we need it:
This PR adds support for managed clusters (GKE) provisioning using ClusterClass, implementing the template types required to satisfy the CAPI contract.
New templates for GKE cluster provisioning via ClusterClass are added to
./templates:./templates/cluster-template-gke-clusterclass.yamland./templates/cluster-template-gke-topology.yaml./templates/cluster-template-gke-autopilot-clusterclass.yamland./templates/cluster-template-gke-autopilot-topologyI've tried these two templates with the current CAPI and CAPG and both clusters are provisioned successfully.
Pending: adding e2e tests
Existing GKE E2E tests are not running because of issues with GCP permissions which we're trying to get fixed here. There is a separate PR to enable these tests on CI. Considering GKE is still an experimental feature of CAPG, I'd suggest we try to get this feature added and, in parallel, work on having E2E permissions fixed. Specially considering that this adds lots of lines of new code, having to keep this PR up to date for a long time may become quite complex.
Which issue(s) this PR fixes:
Fixes #1387
Special notes for your reviewer:
Changes affect the experimental GKE feature which hopefully helps with publishing changes in the API.
NOTE: After bumping to CAPI v1.10 this PR required a number of changes. Since some of these have already been applied in existing GKE (non-clusterclass) logic, there was some overlap of code and I've switched some methods to functions so that they can be reused across different resources (i.e.
GCPManagedMachinePoolandGCPManagedMachinePoolTemplatehave equivalentValidateUpdatelogic and it would not make sense to maintain separate code for each resource). Some of the changes also apply to using individual validation of fields in the specification, rather than doing bulk validation of multiple fields at the same time: this means the code is more verbose but I consider it is overall more clear and definitely makes it more reusable and scalable down the line.Follow-ups:
TODOs:
Release note: