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# 第九章:系统可观测性 | ||
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可观测性(Observability)一词最早出现在控制论领域(最早是匈牙利裔工程师鲁 Rudolf E. Kálmán 针对线性动态系统提出的概念),有着几十年的历史。随着云原生时代的到来,2018 年,CNCF 率先将可观测性的概念引入 IT 领域,并称可观测性是云原生时代必须具备的能力。 | ||
可观测性(Observability)一词最早出现在控制论领域,是匈牙利裔工程师鲁 Rudolf E. Kálmán 针对线性动态系统提出的概念,已有着几十年的历史。随着云原生时代的到来,2018 年,CNCF 率先将可观测性的概念引入 IT 领域,并称可观测性是云原生时代必须具备的能力。 | ||
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从生产所需到概念发声,加之包括 Google 在内的众多大厂一拥而上。至此,”可观测性“逐渐取代”监控“,成为云原生技术领域最热门的话题之一。 |
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# 8.4 ServiceMesh 与 Kubernetes | ||
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Kubernetes 的本质是应用的生命周期管理,具体来说就是部署和管理(扩缩容、自动恢复、发布)。Kubernetes 为微服务提供了可扩展、高弹性的部署和管理平台。Service Mesh 的基础是透明代理,通过 sidecar proxy 拦截到微服务间流量后再通过控制平面配置管理微服务的行为。Service Mesh 将流量管理从 Kubernetes 中解耦,Service Mesh 内部的流量无需 kube-proxy 组件的支持,通过为更接近微服务应用层的抽象,管理服务间的流量、安全性和可观察性。 | ||
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<div align="center"> | ||
<img src="../assets/ServiceMesh-and-Kubernetes.png" width = "450" align=center /> | ||
<p>图片来源于《云原生服务网格Istio》</p> | ||
</div> | ||
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# 8.4 ServiceMesh 的未来 | ||
# 8.5 ServiceMesh 的未来 | ||
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基于 Istio 的 ServiceMesh 架构在互联网公司进行大规模线上部署的时候逐渐遇到以下问题: | ||
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