## Reference

### Design details

Broadly, `istio-cni` accomplishes ambient redirection by instructing ztunnel to set up sockets within the application pod network namespace, where:

				Force:        nil,
				FieldManager: "istioctl",
			})
			if err != nil {
				if errors.IsNotFound(err) {
					return fmt.Errorf("missing Kubernetes Gateway CRDs need to be installed before applying a waypoint: %s", err)
				}
				return err
			}
			if waitReady {
				startTime := time.Now()
				ticker := time.NewTicker(1 * time.Second)
				defer ticker.Stop()

    # whether to use autoscaling/v2 template for HPA settings
    # for internal usage only, not to be configured by users.
    autoscalingv2API: true

  base:
    # For istioctl usage to disable istio config crds in base
    enableIstioConfigCRDs: true

  # `istio_cni` has been deprecated and will be removed in a future release. use `pilot.cni` instead
  istio_cni:

in that cluster. Currently, the minimum we require is the security provider (node agent or citadel).

### Install Istio CRDs

This is the first step of the installation. Please do not remove or edit any CRD - config currently requires
all CRDs to be present. On each upgrade it is recommended to reapply the file, to make sure
you get all CRDs.  CRDs are separated by release and by component type in the CRD directory.

  // ClientConfig defines how to communicate with the hook.
  // Required
  optional WebhookClientConfig clientConfig = 2;

  // Rules describes what operations on what resources/subresources the webhook cares about.
  // The webhook cares about an operation if it matches _any_ Rule.
  // However, in order to prevent ValidatingAdmissionWebhooks and MutatingAdmissionWebhooks

  // ClientConfig defines how to communicate with the hook.
  // Required
  optional WebhookClientConfig clientConfig = 2;

  // Rules describes what operations on what resources/subresources the webhook cares about.
  // The webhook cares about an operation if it matches _any_ Rule.
  // However, in order to prevent ValidatingAdmissionWebhooks and MutatingAdmissionWebhooks

[![Go Report Card](https://goreportcard.com/badge/github.com/istio/operator)](https://goreportcard.com/report/github.com/istio/operator)

# Istio Operator

The istio/operator repo is part of istio/istio from 1.5 onwards.
You can [contribute](../CONTRIBUTING.md) by picking an
[unassigned open issue](https://github.com/istio/istio/issues?q=is%3Aissue+is%3Aopen+label%3Aarea%2Fenvironments%2Foperator+no%3Aassignee),

  imagePullPolicy: ""

  # Used to replace istioNamespace to support operator watch multiple namespaces.
  watchedNamespaces: istio-system
  waitForResourcesTimeout: 300s

  # Used for helm2 to add the CRDs to templates.
  enableCRDTemplates: false

  # revision for the operator resources
  revision: ""

  # The number of old ReplicaSets to retain in operator deployment
  deploymentHistory: 10

```

Istio's helm charts come with a common `openshift` profile that can be used during installation.

The installation process using the Helm charts is as follows:

1) `base` chart creates cluster-wide CRDs, cluster bindings and cluster resources. It is possible to change the namespace from `istio-system` but it is not recommended.

```console
helm install istio-base -n istio-system manifests/charts/base --set profile=openshift
```

#-----------------------------------------------------------------------------
# Target: custom resource definitions
#-----------------------------------------------------------------------------

update-crds:
	bin/update_crds.sh

#-----------------------------------------------------------------------------
# Target: artifacts and distribution
#-----------------------------------------------------------------------------