How to install Istio ingress,egress and other components as DeamonSet in Cluster

Question

Environment :
- Single Cluster.
- Cluster Managed by Rancher.

We have a HA (High Availability) requirement where we want to deploy multiple replicas of Ingress, Egress as DaemonSet to handle heavy load.

I went through the istio documentation and site, to understand deployment models, but it doesnt achieve the usecase.

Answer 1

I did the istio operator way of installing and used the below Manifest file :

apiVersion: install.istio.io/v1alpha1
kind: IstioOperator
metadata:
  namespace: istio-system
  name: istio-operator-ha-config
spec:
  components:
    ingressGateways:
       - name: istio-ingressgateway
         enabled: true
         k8s:
           overlays:
            - apiVersion: apps/v1
              kind: Deployment
              name: istio-ingressgateway
              patches:
              - path: kind
                value: DaemonSet
    egressGateways:
       - name: istio-egressgateway
         enabled: true
         k8s:
           overlays:
            - apiVersion: apps/v1
              kind: Deployment
              name: istio-egressgateway
              patches:
              - path: kind
                value: DaemonSet

See : https://istio.io/latest/docs/setup/install/operator/