trainer: Cache Architecture¶

Controller-runtime cache configuration controls which Kubernetes resources are cached in-memory. Misconfigured caches (cluster-wide watches on high-cardinality types without filters) are a primary cause of operator OOM kills.

Cache Architecture¶

Manager Configuration¶

Property	Value
Manager file	`cmd/trainer-controller-manager/main.go`
Cache scope	cluster-wide
DefaultTransform	no

Implicit Informers (OOM Risk)¶

Type	Source	Risk
corev1.Secret	`pkg/runtime/framework/plugins/mpi/mpi.go:256`	HIGH

Issues¶

Implicit informer for corev1.Secret via client.Get at pkg/runtime/framework/plugins/mpi/mpi.go:256 (cluster-wide, OOM risk)