--- title: Resource Annotations description: Resource annotations used by Istio. location: https://istio.io/docs/reference/config/annotations/ weight: 60 ---

This page presents the various resource annotations that Istio supports to control its behavior.

Annotation Name | Feature Status | Resource Types | Description
--- | --- | --- | ---
`galley.istio.io/analyze-suppress` | Alpha | [Any] | A comma separated list of configuration analysis message codes to suppress when Istio analyzers are run. For example, to suppress reporting of IST0103 (PodMissingProxy) and IST0108 (UnknownAnnotation) on a resource, apply the annotation 'galley.istio.io/analyze-suppress=IST0108,IST0103'. If the value is '*', then all configuration analysis messages are suppressed.
`inject.istio.io/templates` | Alpha | [Pod] | The name of the inject template(s) to use, as a comma separate list. See https://istio.io/latest/docs/setup/additional-setup/sidecar-injection/#custom-templates-experimental for more information.
`install.operator.istio.io/chart-owner` | Alpha | [Any] | Represents the name of the chart used to create this resource.
`install.operator.istio.io/owner-generation` | Alpha | [Any] | Represents the generation to which the resource was last reconciled.
`install.operator.istio.io/version` | Alpha | [Any] | Represents the Istio version associated with the resource
`istio.io/dry-run` | Alpha | [AuthorizationPolicy] | Specifies whether or not the given resource is in dry-run mode. See https://istio.io/latest/docs/tasks/security/authorization/authz-dry-run/ for more information.
`istio.io/rev` | Alpha | [Pod] | Specifies a control plane revision to which a given proxy is connected. This annotation is added automatically, not set by a user. In contrary to the label istio.io/rev, it represents the actual revision, not the requested revision.
`kubernetes.io/ingress.class` | Stable | [Ingress] | Annotation on an Ingress resources denoting the class of controllers responsible for it.
`networking.istio.io/exportTo` | Alpha | [Service] | Specifies the namespaces to which this service should be exported to. A value of '*' indicates it is reachable within the mesh '.' indicates it is reachable within its namespace.
`prometheus.istio.io/merge-metrics` | Alpha | [Pod] | Specifies if application Prometheus metric will be merged with Envoy metrics for this workload.
`proxy.istio.io/config` | Beta | [Pod] | Overrides for the proxy configuration for this specific proxy. Available options can be found at https://istio.io/docs/reference/config/istio.mesh.v1alpha1/#ProxyConfig.
`readiness.status.sidecar.istio.io/applicationPorts` | Alpha | [Pod] | Specifies the list of ports exposed by the application container. Used by the Envoy sidecar readiness probe to determine that Envoy is configured and ready to receive traffic.
`readiness.status.sidecar.istio.io/failureThreshold` | Alpha | [Pod] | Specifies the failure threshold for the Envoy sidecar readiness probe.
`readiness.status.sidecar.istio.io/initialDelaySeconds` | Alpha | [Pod] | Specifies the initial delay (in seconds) for the Envoy sidecar readiness probe.
`readiness.status.sidecar.istio.io/periodSeconds` | Alpha | [Pod] | Specifies the period (in seconds) for the Envoy sidecar readiness probe.
`sidecar.istio.io/agentLogLevel` | Alpha | [Pod] | Specifies the log output level for pilot-agent.
`sidecar.istio.io/bootstrapOverride` | Alpha | [Pod] | Specifies an alternative Envoy bootstrap configuration file.
`sidecar.istio.io/componentLogLevel` | Alpha | [Pod] | Specifies the component log level for Envoy.
`sidecar.istio.io/controlPlaneAuthPolicy` | Deprecated | [Pod] | Specifies the auth policy used by the Istio control plane. If NONE, traffic will not be encrypted. If MUTUAL_TLS, traffic between Envoy sidecar will be wrapped into mutual TLS connections.
`sidecar.istio.io/discoveryAddress` | Deprecated | [Pod] | Specifies the XDS discovery address to be used by the Envoy sidecar.
`sidecar.istio.io/enableCoreDump` | Alpha | [Pod] | Specifies whether or not an Envoy sidecar should enable core dump.
`sidecar.istio.io/extraStatTags` | Alpha | [Pod] | An additional list of tags to extract from the in-proxy Istio Wasm telemetry. Each additional tag needs to be present in this list.
`sidecar.istio.io/inject` | Deprecated | [Pod] | Specifies whether or not an Envoy sidecar should be automatically injected into the workload. Deprecated in favor of `sidecar.istio.io/inject` label.
`sidecar.istio.io/interceptionMode` | Alpha | [Pod] | Specifies the mode used to redirect inbound connections to Envoy (REDIRECT or TPROXY).
`sidecar.istio.io/logLevel` | Alpha | [Pod] | Specifies the log level for Envoy.
`sidecar.istio.io/proxyCPU` | Alpha | [Pod] | Specifies the requested CPU setting for the Envoy sidecar.
`sidecar.istio.io/proxyCPULimit` | Alpha | [Pod] | Specifies the CPU limit for the Envoy sidecar.
`sidecar.istio.io/proxyImage` | Alpha | [Pod] | Specifies the Docker image to be used by the Envoy sidecar.
`sidecar.istio.io/proxyImageType` | Alpha | [Pod] | Specifies the Docker image type to be used by the Envoy sidecar. Istio publishes debug and distroless image types for every release tag.
`sidecar.istio.io/proxyMemory` | Alpha | [Pod] | Specifies the requested memory setting for the Envoy sidecar.
`sidecar.istio.io/proxyMemoryLimit` | Alpha | [Pod] | Specifies the memory limit for the Envoy sidecar.
`sidecar.istio.io/rewriteAppHTTPProbers` | Alpha | [Pod] | Rewrite HTTP readiness and liveness probes to be redirected to the Envoy sidecar.
`sidecar.istio.io/statsHistogramBuckets` | Alpha | [Pod] | Specifies the custom histogram buckets with a prefix matcher to separate the Istio mesh metrics from the Envoy stats, e.g. `{"istiocustom":[1,5,10,50,100,500,1000,5000,10000],"cluster.xds-grpc":[1,5,10,25,50,100,250,500,1000,2500,5000,10000]}`. Default buckets are `[0.5,1,5,10,25,50,100,250,500,1000,2500,5000,10000,30000,60000,300000,600000,1800000,3600000]`.
`sidecar.istio.io/statsInclusionPrefixes` | Deprecated | [Pod] | Specifies the comma separated list of prefixes of the stats to be emitted by Envoy.
`sidecar.istio.io/statsInclusionRegexps` | Deprecated | [Pod] | Specifies the comma separated list of regexes the stats should match to be emitted by Envoy.
`sidecar.istio.io/statsInclusionSuffixes` | Deprecated | [Pod] | Specifies the comma separated list of suffixes of the stats to be emitted by Envoy.
`sidecar.istio.io/status` | Alpha | [Pod] | Generated by Envoy sidecar injection that indicates the status of the operation. Includes a version hash of the executed template, as well as names of injected resources.
`sidecar.istio.io/userVolume` | Alpha | [Pod] | Specifies one or more user volumes (as a JSON array) to be added to the Envoy sidecar.
`sidecar.istio.io/userVolumeMount` | Alpha | [Pod] | Specifies one or more user volume mounts (as a JSON array) to be added to the Envoy sidecar.
`status.sidecar.istio.io/port` | Alpha | [Pod] | Specifies the HTTP status Port for the Envoy sidecar. If zero, the sidecar will not provide status.
`topology.istio.io/controlPlaneClusters` | Alpha | [Namespace] | A comma-separated list of clusters (or * for any) running istiod that should attempt leader election for a remote cluster thats system namespace includes this annotation. Istiod will not attempt to lead unannotated remote clusters.
`traffic.istio.io/nodeSelector` | Stable | [Service] | This annotation is a set of node-labels (key1=value,key2=value). If the annotated Service is of type NodePort and is a multi-network gateway (see topology.istio.io/network), the addresses for selected nodes will be used for cross-network communication.
`traffic.sidecar.istio.io/excludeInboundPorts` | Alpha | [Pod] | A comma separated list of inbound ports to be excluded from redirection to Envoy. Only applies when all inbound traffic (i.e. '*') is being redirected.
`traffic.sidecar.istio.io/excludeInterfaces` | Alpha | [Pod] | A comma separated list of interfaces to be excluded from Istio traffic capture
`traffic.sidecar.istio.io/excludeOutboundIPRanges` | Alpha | [Pod] | A comma separated list of IP ranges in CIDR form to be excluded from redirection. Only applies when all outbound traffic (i.e. '*') is being redirected.
`traffic.sidecar.istio.io/excludeOutboundPorts` | Alpha | [Pod] | A comma separated list of outbound ports to be excluded from redirection to Envoy.
`traffic.sidecar.istio.io/includeInboundPorts` | Alpha | [Pod] | A comma separated list of inbound ports for which traffic is to be redirected to Envoy. The wildcard character '*' can be used to configure redirection for all ports. An empty list will disable all inbound redirection.
`traffic.sidecar.istio.io/includeOutboundIPRanges` | Alpha | [Pod] | A comma separated list of IP ranges in CIDR form to redirect to Envoy (optional). The wildcard character '*' can be used to redirect all outbound traffic. An empty list will disable all outbound redirection.
`traffic.sidecar.istio.io/includeOutboundPorts` | Alpha | [Pod] | A comma separated list of outbound ports for which traffic is to be redirected to Envoy, regardless of the destination IP.
`traffic.sidecar.istio.io/kubevirtInterfaces` | Alpha | [Pod] | A comma separated list of virtual interfaces whose inbound traffic (from VM) will be treated as outbound.