Can not scale-out istiod pod installed by TMC

Products

• Tanzu Mission Control

Issue/Introduction

When installing the istiod or istio-ingress-gateway package via TMC Add-ons, the number of pods does not scale even after changing the replicaCount from 1 to 3 through the TMC UI.

Environment

Tanzu Kubernetes Grid under Tanzu Mission Control (TMC)

Cause

Regarding istiod and istio-ingress-gateway, default package value includes autoscaleEnabled: true, which prevents scaling up the number of replicas of the deployment.

TMC UI --> Clusters --> Select target Workload Cluster --> Add-ons --> Installed Tanzu Packages --> istiod --> EDIT --> Table View

Resolution

Disable autoscaleEnabled as False.

1. TMC UI --> Clusters --> Select target Workload Cluster --> Add-ons --> Installed Tanzu Packages --> istiod --> EDIT --> Table View
2. Change "autoscaleEnabled:" from "True" to "False" (Notice the pagination)
3. Set "replicaCount:" from "1" to "N" (Notice the pagination)
4. APPLY CHANGES (Right of top)