學技術併發網始終建議同學們閱讀原版官方文件，所以併發網每月都會組織大家翻譯各種官方技術文件。3月份併發網組織大家翻譯《Linkerd官方文件》，歡迎有興趣的同學參與。

如何領取

 通過評論領取想要翻譯的文章，每次領取一章或一節（根據內容長短），翻譯完後再領取其他章節。領取完成之後，譯文最好在一個星期內翻譯完成，不要超過兩週，如果不能完成翻譯，也歡迎你邀請其他同學和你一起完成翻譯。請謹慎領取，很多文章領取了沒有翻譯，導致文章很長時間沒人翻譯。

如何提交？

翻譯完成之後請登入到併發網提交成待稽核狀態，會有專門的編輯校對後進行釋出。如果多篇文章翻譯被評為A級會升級您為譯者，並加入譯者溝通微信群。如果在本站翻譯超過十篇文章，將有禮品贈送，比如簽名版的《Java併發程式設計的藝術》或者其他圖書。如果譯文釋出到併發網公眾號，讚賞歸譯者所有。如果你喜歡使用markdown編寫文章，可以將markdown生成後的HTML複製到網站上進行提交。mac下推薦MacDown軟體。

Get started

Get Linkerd up and running in just a few minutes. This section addresses running Linkerd in common environments.

Select an environment to get started:

Administration Overview

This section describes some of the major features included in Linkerd’s admin interface. For a complete list of available endpoints, refer to 

the config documentation.

• Dashboard: Admin UI showing graphs of requests, success rate, latency and more.
• Telemetry: Describes how to handle metrics exported by Linkerd.
• Dtab playground: A web UI that you can use to help debug Dtab rules.
• Shutdown: Gracefully shut down Linkerd.

Features

• Beyond adding reliability through circuit breaking and latency-aware load balancing, Linkerd automatically instruments top-line service metrics such as request volume, success rates, and latency distributions. Linkerd also provides request-level routing and multi-service discovery integration with a powerful language called dtabs.In this section you’ll find a rundown of Linkerd’s major features.
  • Load balancing: Linkerd provides multiple load-balancing algorithms that use real-time performance metrics to distribute load and reduce tail latencies across your application.
  • Circuit breaking: Linkerd includes automatic circuit breaking that will stop sending traffic to instances that are deemed to be unhealthy, giving them a chance to recover and avoiding cascading failures.
  • Service discovery: Linkerd integrates with various service discovery backends, helping you to reduce the complexity of your code by removing ad-hoc service discovery implementations.
  • Dynamic request routing: Linkerd enables dynamic request routing and rerouting, allowing you to set up staging services, canaries, blue-green deploys, cross-DC failover, and dark traffic with a minimal amount of configuration.
  • Retries and deadlines: Linkerd can automatically retry requests on certain failures and can timeout requests after a specified period.
  • TLS: Linkerd can be configured to send and receive requests with TLS, which you can use to encrypt communication across host boundaries without modification to your existing application code.
  • HTTP proxy integration: Linkerd can act as an HTTP proxy, which is widely supported by almost all modern HTTP clients, making it easy to integrate into existing applications.
  • Transparent Proxying: you can use iptables rules on your host to set up transparent proxying via Linkerd
  • gRPC: Linkerd supports both HTTP/2 and TLS, allowing it to route gRPC requests, enabling advanced RPC mechanisms such as bidirectional streaming, flow control, and structured data payloads.
  • Distributed tracing: Linkerd supports both distributed tracing and metrics instrumentation, providing uniform observability across all services.
  • Instrumentation: Linkerd supports both distributed tracing and metrics instrumentation, providing uniform observability across all services.

Configuration Overview

Both Linkerd and namerd’s configuration is controlled via a configuration file, which must be provided as a command-line argument when the processes are started. Both YAML and JSON config file formats are supported. For the complete, up-to-date configuration reference guides, see:

Advanced Overview

This section of the documentation contains in-depth information about advanced topics pertaining to both Linkerd and namerd. It is divided into the following subsections:

• Routing: Provides a comprehensive look at how Linkerd routes requests that it receives.
• namerd: Introduces namerd as a service that helps route Linkerd requests and centralizes routing decisions to provide global Linkerd control.
• Dtabs: Explains delegation tables and delegation rules, the primary mechanism by which Linkerd dynamically routes requests.
• Deployment: Addresses typical deployment models for running Linkerd in your architecture.
• Plugins: Sheds light on Linkerd’s modular plugin system, and provides a detailed walkthrough for writing your own plugins.

Our wiki also documents:

• Network Performance: Common approaches to diagnosing network performance issues that can negatively impact Linkerd.
• Debugging a Linkerd setup: Common approaches to finding and fixing Linkerd configuration issues that may prevent it from working properly in your setup.

方 騰飛

花名清英，併發網(ifeve.com)創始人，暢銷書《Java併發程式設計的藝術》作者，螞蟻金服技術專家。目前工作於支付寶微貸事業部，關注網際網路金融，併發程式設計和敏捷實踐。微信公眾號aliqinying。