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* istio-1.20.0 * upload * fix release
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END OF TERMS AND CONDITIONS
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APPENDIX: How to apply the Apache License to your work.
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To apply the Apache License to your work, attach the following
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# Istio
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[![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/1395/badge)](https://bestpractices.coreinfrastructure.org/projects/1395)
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[![Go Report Card](https://goreportcard.com/badge/github.com/istio/istio)](https://goreportcard.com/report/github.com/istio/istio)
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[![GoDoc](https://godoc.org/istio.io/istio?status.svg)](https://godoc.org/istio.io/istio)
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<a href="https://istio.io/">
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<img src="https://github.com/istio/istio/raw/master/logo/istio-bluelogo-whitebackground-unframed.svg"
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alt="Istio logo" title="Istio" height="100" width="100" />
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</a>
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---
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Istio is an open source service mesh that layers transparently onto existing distributed applications. Istio’s powerful features provide a uniform and more efficient way to secure, connect, and monitor services. Istio is the path to load balancing, service-to-service authentication, and monitoring – with few or no service code changes.
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- For in-depth information about how to use Istio, visit [istio.io](https://istio.io)
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- To ask questions and get assistance from our community, visit [discuss.istio.io](https://discuss.istio.io)
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- To learn how to participate in our overall community, visit [our community page](https://istio.io/about/community)
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In this README:
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- [Introduction](#introduction)
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- [Repositories](#repositories)
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- [Issue management](#issue-management)
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In addition, here are some other documents you may wish to read:
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- [Istio Community](https://github.com/istio/community#istio-community) - describes how to get involved and contribute to the Istio project
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- [Istio Developer's Guide](https://github.com/istio/istio/wiki/Preparing-for-Development) - explains how to set up and use an Istio development environment
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- [Project Conventions](https://github.com/istio/istio/wiki/Development-Conventions) - describes the conventions we use within the code base
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- [Creating Fast and Lean Code](https://github.com/istio/istio/wiki/Writing-Fast-and-Lean-Code) - performance-oriented advice and guidelines for the code base
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You'll find many other useful documents on our [Wiki](https://github.com/istio/istio/wiki).
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## Introduction
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[Istio](https://istio.io/latest/docs/concepts/what-is-istio/) is an open platform for providing a uniform way to [integrate
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microservices](https://istio.io/latest/docs/examples/microservices-istio/), manage [traffic flow](https://istio.io/latest/docs/concepts/traffic-management/) across microservices, enforce policies
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and aggregate telemetry data. Istio's control plane provides an abstraction
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layer over the underlying cluster management platform, such as Kubernetes.
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Istio is composed of these components:
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- **Envoy** - Sidecar proxies per microservice to handle ingress/egress traffic
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between services in the cluster and from a service to external
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services. The proxies form a _secure microservice mesh_ providing a rich
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set of functions like discovery, rich layer-7 routing, circuit breakers,
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policy enforcement and telemetry recording/reporting
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functions.
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> Note: The service mesh is not an overlay network. It
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> simplifies and enhances how microservices in an application talk to each
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> other over the network provided by the underlying platform.
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- **Istiod** - The Istio control plane. It provides service discovery, configuration and certificate management. It consists of the following sub-components:
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- **Pilot** - Responsible for configuring the proxies at runtime.
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- **Citadel** - Responsible for certificate issuance and rotation.
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- **Galley** - Responsible for validating, ingesting, aggregating, transforming and distributing config within Istio.
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- **Operator** - The component provides user friendly options to operate the Istio service mesh.
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## Repositories
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The Istio project is divided across a few GitHub repositories:
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- [istio/api](https://github.com/istio/api). This repository defines
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component-level APIs and common configuration formats for the Istio platform.
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- [istio/community](https://github.com/istio/community). This repository contains
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information on the Istio community, including the various documents that govern
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the Istio open source project.
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- [istio/istio](README.md). This is the main code repository. It hosts Istio's
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core components, install artifacts, and sample programs. It includes:
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- [istioctl](istioctl/). This directory contains code for the
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[_istioctl_](https://istio.io/latest/docs/reference/commands/istioctl/) command line utility.
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- [operator](operator/). This directory contains code for the
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[Istio Operator](https://istio.io/latest/docs/setup/install/operator/).
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- [pilot](pilot/). This directory
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contains platform-specific code to populate the
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[abstract service model](https://istio.io/docs/concepts/traffic-management/#pilot), dynamically reconfigure the proxies
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when the application topology changes, as well as translate
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[routing rules](https://istio.io/latest/docs/reference/config/networking/) into proxy specific configuration.
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- [security](security/). This directory contains [security](https://istio.io/latest/docs/concepts/security/) related code,
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including Citadel (acting as Certificate Authority), citadel agent, etc.
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- [istio/proxy](https://github.com/istio/proxy). The Istio proxy contains
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extensions to the [Envoy proxy](https://github.com/envoyproxy/envoy) (in the form of
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Envoy filters) that support authentication, authorization, and telemetry collection.
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## Issue management
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We use GitHub to track all of our bugs and feature requests. Each issue we track has a variety of metadata:
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- **Epic**. An epic represents a feature area for Istio as a whole. Epics are fairly broad in scope and are basically product-level things.
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Each issue is ultimately part of an epic.
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- **Milestone**. Each issue is assigned a milestone. This is 0.1, 0.2, ..., or 'Nebulous Future'. The milestone indicates when we
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think the issue should get addressed.
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- **Priority**. Each issue has a priority which is represented by the column in the [Prioritization](https://github.com/orgs/istio/projects/6) project. Priority can be one of
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P0, P1, P2, or >P2. The priority indicates how important it is to address the issue within the milestone. P0 says that the
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milestone cannot be considered achieved if the issue isn't resolved.
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---
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<div align="center">
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<img src="https://raw.githubusercontent.com/cncf/artwork/master/other/cncf/horizontal/color/cncf-color.svg" width="300" alt="Cloud Native Computing Foundation logo"/>
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<p>Istio is a <a href="https://cncf.io">Cloud Native Computing Foundation</a> project.</p>
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</div>
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architectures:
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- linux/amd64
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- linux/arm64
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dashboards:
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istio-extension-dashboard: 13277
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istio-mesh-dashboard: 7639
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istio-performance-dashboard: 11829
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istio-service-dashboard: 7636
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istio-workload-dashboard: 7630
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pilot-dashboard: 7645
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dependencies:
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api:
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goversionenabled: true
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sha: 871b2914253f76764475de128da62fd4be791d66
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client-go:
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goversionenabled: true
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sha: 30f00b62f7e940eaa08ea954c29d9df0175b447f
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envoy:
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sha: 009bb79cc634fd621bfc2d84b6bd69e1da6a0046
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istio:
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sha: 6869a6c2371e21c847d216065cf5c59863d01b4c
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proxy:
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sha: 580bf9cc561a012d4eb14af48d496d6748307e59
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release-builder:
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sha: 7ab88e4ba6e013628e438e234a81dd1cfb73dbf2
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test-infra:
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sha: fbf618a031c852115f583f0b419bf8bc865ace3b
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tools:
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sha: 409ec82b2eed812354fcf25dbf6f6218608df07e
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ztunnel:
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sha: 6f0d7bed19ca360dfbdc43d3262e6b29ea75c8e2
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docker: docker.io/istio
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dockerOutput: tar
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skipGenerateBillOfMaterials: false
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version: 1.20.0

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