Setting global resource requests for sidecar proxy

Config
#1

The sidecar proxy now has the default requests set to

Requests:
  cpu: 100m
  memory: 128Mi

In my experience that is way more than its using and makes a cluster with a lot of small services need way to much cpu to even be able to schedule.

I Know you can override the defaults per pod with annotations:

annotations:
  sidecar.istio.io/proxyCPU: "600m"
  sidecar.istio.io/proxyMemory: "256Mi"

But i really wand to do this globally with the options available in the istio operator Istio / IstioOperator Options or similar?
Is there any way to do this currently because i can’t find it. Or does this seem like something we should add?

#2

Found a solution for this myself. It can be set in the istioOperator resource in this way.

apiVersion: install.istio.io/v1alpha1
kind: IstioOperator
metadata:
  namespace: istio-system
  name: istiocontrolplane
spec:
  profile: minimal
  values:
    global:
      proxy:
        resources:
          requests:
            cpu: 20m
            memory: 128Mi
          limits:
            cpu: 2000m
            memory: 1024Mi
#3

Hi
I set this in the istioOperator but I didn’t see any change. Is there any need to restart sth?

#4

I have just the same problem. I tried restarting both the istiod deployment and some deployments which have the sidecar and it didn’t got updated. Did you find what to do?

#5

You need to restart the workloads after reconfiguring the istiod so the new istio-proxy can be injected with the new resources setup.