metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"

	"istio.io/api/security/v1beta1"
	"istio.io/istio/pilot/pkg/features"
	securityModel "istio.io/istio/pilot/pkg/security/model"
	"istio.io/istio/pkg/config/constants"
	"istio.io/istio/pkg/env"
	"istio.io/istio/pkg/log"
	"istio.io/istio/pkg/security"
	"istio.io/istio/security/pkg/cmd"
	"istio.io/istio/security/pkg/pki/ca"
	"istio.io/istio/security/pkg/pki/ra"

          },
          "expr": "sum(container_memory_working_set_bytes{namespace!=\"istio-system\",container=\"istio-proxy\"}) / count(container_memory_working_set_bytes{namespace!=\"istio-system\",container=\"istio-proxy\"})",
          "format": "time_series",
          "intervalFactor": 1,
          "legendFormat": "per istio proxy",
          "refId": "B"
        }
      ],
      "title": "Memory Usage",

# 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

  istioctl dashboard istiod-debug istiod-123-456.istio-system

  # Open Istio debug web UI for the istiod-56dd66799-jfdvs pod in a custom namespace
  istioctl dashboard istiod-debug istiod-123-456 -n custom-ns

  # Open Istio debug web UI for any Istiod pod
  istioctl dashboard istiod-debug deployment/istiod.istio-system

  # with short syntax
  istioctl dash istiod-debug pilot-123-456.istio-system

	"istio.io/istio/pilot/pkg/model"
	"istio.io/istio/pilot/pkg/serviceregistry/kube/controller"
	"istio.io/istio/pkg/config/constants"
	"istio.io/istio/pkg/config/schema/gvk"
	"istio.io/istio/pkg/config/validation/agent"
	"istio.io/istio/pkg/kube"
	"istio.io/istio/pkg/kube/labels"
	"istio.io/istio/pkg/log"
	netutil "istio.io/istio/pkg/util/net"
	"istio.io/istio/pkg/util/protomarshal"
	"istio.io/istio/pkg/util/shellescape"
)

var (

	"google.golang.org/grpc"
	v1 "k8s.io/api/core/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"

	"istio.io/api/label"
	"istio.io/istio/istioctl/pkg/clioptions"
	"istio.io/istio/istioctl/pkg/xds"
	pilotxds "istio.io/istio/pilot/pkg/xds"
	"istio.io/istio/pkg/kube"
	istioversion "istio.io/istio/pkg/version"
)

const (
	// Service account to create tokens in
	tokenServiceAccount = "default"

	ManagedGatewayControllerLabel     = "istio.io-gateway-controller"
	ManagedGatewayMeshControllerLabel = "istio.io-mesh-controller"
	ManagedGatewayMeshController      = "istio.io/mesh-controller"

	RemoteGatewayClassName   = "istio-remote"
	WaypointGatewayClassName = "istio-waypoint"

	// DeprecatedGatewayNameLabel indicates the gateway managing a particular proxy instances. Only populated for Gateway API gateways

	"istio.io/istio/pkg/config/constants"
	"istio.io/istio/pkg/config/mesh"
	"istio.io/istio/pkg/config/schema/collections"
	"istio.io/istio/pkg/config/schema/gvk"
	"istio.io/istio/pkg/config/schema/kind"
	"istio.io/istio/pkg/ctrlz"
	"istio.io/istio/pkg/filewatcher"
	"istio.io/istio/pkg/h2c"
	istiokeepalive "istio.io/istio/pkg/keepalive"
	kubelib "istio.io/istio/pkg/kube"
	"istio.io/istio/pkg/kube/inject"
	"istio.io/istio/pkg/kube/kclient"

	"k8s.io/apimachinery/pkg/runtime/serializer/json"

	"istio.io/istio/operator/pkg/helm"
	"istio.io/istio/pkg/kube"
	"istio.io/istio/pkg/maps"
)

const (
	IstioTagLabel       = "istio.io/tag"
	DefaultRevisionName = "default"

	defaultChart            = "default"
	pilotDiscoveryChart     = "istio-control/istio-discovery"
	revisionTagTemplateName = "revision-tags.yaml"

	meshconfig "istio.io/api/mesh/v1alpha1"
	"istio.io/istio/pilot/cmd/pilot-agent/status/ready"
	"istio.io/istio/pilot/pkg/features"
	istiogrpc "istio.io/istio/pilot/pkg/grpc"
	"istio.io/istio/pkg/channels"
	"istio.io/istio/pkg/config/constants"
	dnsProto "istio.io/istio/pkg/dns/proto"
	"istio.io/istio/pkg/h2c"
	"istio.io/istio/pkg/istio-agent/health"
	"istio.io/istio/pkg/istio-agent/metrics"