Introduction

Use this action to up- or downscale a Kubernetes Argo Rollout. The attack scales the Argo Rollout to the specified replica count at the beginning of the attack and rolls it back to the old replica count whenever the attack stops. Intermediate changes of the replica count, i.e., by third-party tools, don't cause a re-scaling by the attack.

Use Cases

• Verify that your Argo Rollout is successfully scaled up and the new pods are taken into account by your load balancer or service mesh.
• Check how long it takes to scale your Argo Rollout to a desirable amount of pods (in combination with a pod count check).
• Validate that canary or blue-green traffic routing keeps working as expected when the rollout is scaled during an experiment.

Parameters

Parameter	Description	Default
Duration	How long should the new scale be used?	180s
Replica Count	The desired replica count	1

Rollback

At the end of the attack or in case of an error, the original spec.replicas value is restored on the Argo Rollout.