# Istio Installer

Note: If making any changes to the charts or values.yaml in this dir, first read [UPDATING-CHARTS.md](UPDATING-CHARTS.md)

Istio installer is a modular, 'a-la-carte' installer for Istio. It is based on a
fork of the Istio helm templates, refactored to increase modularity and isolation.

Goals:
- Improve upgrade experience: users should be able to gradually roll upgrades, with proper

// CSI drivers do not need to create the CSINode object directly. As long as
// they use the node-driver-registrar sidecar container, the kubelet will
// automatically populate the CSINode object for the CSI driver as part of
// kubelet plugin registration.
// CSINode has the same name as a node. If the object is missing, it means either

  // dataSourceRef specifies the object from which to populate the volume with data, if a non-empty
  // volume is desired. This may be any object from a non-empty API group (non
  // core object) or a PersistentVolumeClaim object.
  // When this field is specified, volume binding will only succeed if the type of
  // the specified object matches some installed volume populator or dynamic
  // provisioner.

// CSI drivers do not need to create the CSINode object directly. As long as
// they use the node-driver-registrar sidecar container, the kubelet will
// automatically populate the CSINode object for the CSI driver as part of
// kubelet plugin registration.
// CSINode has the same name as a node. If the object is missing, it means either

# Architecture of Istiod

This document describes the high level architecture of the Istio control plane, Istiod.
Istiod is structured as a modular monolith, housing a wide range of functionality from certificate signing, proxy configuration (XDS), traditional Kubernetes controllers, and more.

## Proxy Configuration

    - [operator](operator/). This directory contains code for the
[Istio Operator](https://istio.io/latest/docs/setup/install/operator/).

    - [pilot](pilot/). This directory
contains platform-specific code to populate the
[abstract service model](https://istio.io/docs/concepts/traffic-management/#pilot), dynamically reconfigure the proxies
when the application topology changes, as well as translate