annotation

Documentation

Index

• Constants

Constants

const (
	// TortoiseNameAnnotation - VPA and HPA managed by tortoise have this label.
	TortoiseNameAnnotation = "tortoises.autoscaling.mercari.com/tortoise-name"

	// If this annotation is set to "true", it means that tortoise manages that resource,
	// and will be removed when the tortoise is deleted.
	ManagedByTortoiseAnnotation = "tortoise.autoscaling.mercari.com/managed-by-tortoise"
)

annotation on HPA and VPA resource.

const (
	// IstioSidecarInjectionAnnotation - If this annotation is set to "true", it means that the sidecar injection is enabled.
	IstioSidecarInjectionAnnotation = "sidecar.istio.io/inject"

	IstioSidecarProxyCPUAnnotation    = "sidecar.istio.io/proxyCPU"
	IstioSidecarProxyMemoryAnnotation = "sidecar.istio.io/proxyMemory"
)

const (
	// If this annotation is set to "true", it means that dryrun tortoise will get changed in the autoscaling policy
	// when a corresponding HPA is changed.
	// e.g., If HPA is changed to have containerResource metric for "istio-proxy" cpu, tortoise will modify the autoscaling policy to have "Horizontal" to "istio-proxy" cpu.
	//
	// Background:
	// In mercari, we're using DryRun Tortoise to periodically check the recommendation from Tortoises.
	// Auto Tortoise is keep modifing HPAs to have the recommendation from Tortoise,
	// which means the autoscaling policy in Auto Tortoise is always consistent with metrics in HPAs.
	// Even if users manually add/remove metrics in HPAs, Auto Tortoise will revert the change soon.
	// But, DryRun Tortoise is not allowed to modify HPAs, and if users manually add/remove metrics in HPAs,
	// it could result in being inconsistent with the autoscaling policy in DryRun Tortoise.
	ModifyDryRunTortoiseWhenHPAIsChangedAnnotation = "tortoise.autoscaling.mercari.com/modify-dryrun-tortoise-when-hpa-is-changed"
)

annotation on Tortoise resource.