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… to mitigate GCE stockout - Enable Node Auto-Provisioning (NAP) on all GKE cluster creations (--enable-autoprovisioning --max-cpu 500 --max-memory 2000) - After cluster becomes ready, automatically apply a ComputeClass resource (infrabox-default) that defines zone fallback priorities within the same region (primary zone first, then sibling zones a/b/c) - Failures in ComputeClass application are non-fatal and only logged, so cluster provisioning is unaffected if apply fails Jira: https://jira.tools.sap/browse/DM01-6271
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Summary
--enable-autoprovisioning --max-cpu 500 --max-memory 2000)ComputeClassresource (infrabox-default) with zone+machine-type fallback priorities within the same region (primary zone first, then sibling zones)Motivation
Persistent
GCE_STOCKOUTerrors ineurope-west3-ccause GKE cluster provisioning failures. Google Support (Case #75099279) recommended configuring a GKE Custom ComputeClass with fallback priorities to automatically redirect workload scheduling to alternative zones/machine-types when capacity is exhausted.The ComputeClass is applied transparently — no changes required in
infrabox.json.Changes
src/services/gcp/pkg/stub/handler.gocreateCluster: add--enable-autoprovisioning,--max-cpu 500,--max-memory 2000flagssyncGKECluster: callapplyDefaultComputeClassafter cluster becomes RUNNINGapplyDefaultComputeClassfunc: generates and kubectl-applies aComputeClasswith zone+machine-type fallback derived fromcr.Spec.ZoneJira
https://jira.tools.sap/browse/DM01-6271