istio基本概念

前言

刚才看了一个istio的讲解视频，还热乎着尼，所以特地记录一下笔记，捎带推荐一个up主。

Concept

Service mesh is a pattern

Istio is a implement

Istio features

• Service Discovery
• Security
• Metrics & Tracing

Istio function

• Traffic routing

• Traffic split

  different service version can have different percentage traffic

• Retry Rule

How to configure istio?

• we don’t configure proxies, we configure istiod, it will converts to envoy config
• Using CRD， like VirtualService, DestinationRule, Gateway

Traffic flow