# Support

Here are some resources to help you understand and use Istio:

- For in-depth information about how to use Istio, visit [istio.io](https://istio.io)
- To ask questions and get assistance from our community, visit [GitHub Discussions](https://github.com/istio/istio/discussions)

  // +optional
  optional Overhead overhead = 3;

  // scheduling holds the scheduling constraints to ensure that pods running
  // with this RuntimeClass are scheduled to nodes that support it.
  // If scheduling is nil, this RuntimeClass is assumed to be supported by all
  // nodes.
  // +optional
  optional Scheduling scheduling = 4;
}

// RuntimeClassList is a list of RuntimeClass objects.

FROM ${ISTIO_BASE_REGISTRY}/base:${BASE_VERSION} as debug

# The following section is used as base image if BASE_DISTRIBUTION=distroless
# This image is a custom built debian11 distroless image with multiarchitecture support.
# It is built on the base distroless image, with iptables binary and libraries added
# The source can be found at https://github.com/istio/distroless/tree/iptables

  // encountered when an authorizer, such as an external authorizer, doesn't support rules evaluation.
  optional bool incomplete = 3;

  // EvaluationError can appear in combination with Rules. It indicates an error occurred during
  // rule evaluation, such as an authorizer that doesn't support rule evaluation, and that
  // ResourceRules and/or NonResourceRules may be incomplete.
  // +optional

## Security Bulletins

Information about previous Istio vulnerabilities can be found on the
[Security Bulletins] page.

[Support Announcements]: https://istio.io/news/support/
[Istio Security Vulnerabilities]: https://istio.io/about/security-vulnerabilities/
[Security Bulletins]: https://istio.io/news/security/

  //
  // "csi.storage.k8s.io/ephemeral" is a new feature in Kubernetes 1.16. It is only
  // required for drivers which support both the "Persistent" and "Ephemeral" VolumeLifecycleMode.
  // Other drivers can leave pod info disabled and/or ignore this field.
  // As Kubernetes 1.15 doesn't support this field, drivers can only support one mode when
  // deployed on such a cluster and the deployment determines which mode that is, for example

  // +optional
  optional Overhead overhead = 3;

  // scheduling holds the scheduling constraints to ensure that pods running
  // with this RuntimeClass are scheduled to nodes that support it.
  // If scheduling is nil, this RuntimeClass is assumed to be supported by all
  // nodes.
  // +optional
  optional Scheduling scheduling = 4;
}

// RuntimeClassList is a list of RuntimeClass objects.

```console
helm install ztunnel istio/ztunnel
```

## Uninstalling the Chart

To uninstall/delete the chart:

```console
helm delete ztunnel
```

## Configuration

To view support configuration options and documentation, run:

```console
helm show values istio/ztunnel
```

### Profiles

Istio Helm charts have a concept of a `profile`, which is a bundled collection of value presets.

  // with this RuntimeClass are scheduled to nodes that support it.
  // If scheduling is nil, this RuntimeClass is assumed to be supported by all
  // nodes.
  // +optional
  optional Scheduling scheduling = 3;
}

// Scheduling specifies the scheduling constraints for nodes supporting a
// RuntimeClass.
message Scheduling {
  // nodeSelector lists labels that must be present on nodes that support this

  // This field IS NOT consulted in any way if "Allowed" is "true".
  // +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.Status status = 3;

  // The patch body. Currently we only support "JSONPatch" which implements RFC 6902.
  // +optional
  optional bytes patch = 4;

  // The type of Patch. Currently we only allow "JSONPatch".
  // +optional
  optional string patchType = 5;