第 1 篇 · 云计算与云原生全景图：一张图看懂所有技术的位置

第 1 篇 · 云计算与云原生全景图：一张图看懂所有技术的位置

本篇是整个系列的"地图"。学完后你应该能回答三个问题：

后面 4 篇是对这张地图逐层展开的"细节放大图"。

文章目录

• 第 1 篇 · 云计算与云原生全景图：一张图看懂所有技术的位置
• • 一、先想清楚：为什么会有"云计算"？
  • • 1. 传统 IT 时代（物理机）的三个痛点
    • 2. 解决思路的演进（这是整个系列的主线）
  • 二、云计算的官方定义与 5 个特征
  • 三、云计算的两大分类（这是最容易混淆的地方）
  • • 1. 服务模式：IaaS / PaaS / SaaS（按"你管多少"划分）
    • 2. 部署模式：公有云 / 私有云 / 混合云 / 多云
  • 四、什么是"云原生"？它和"云计算"是什么关系？
  • • 1. 定义
    • 2. 云原生的"四大支柱"（最常用的记忆模型）
    • 3. 云计算 vs 云原生，一句话区分
  • 五、★ 核心：云计算 / 云原生完整分层全景图
  • • 各层职责与对应篇目
  • 六、★ 技术速查表：每个技术"在哪、干嘛、和谁同类"
  • • 1. 计算 / 虚拟化类
    • 2. 存储类
    • 3. 网络类
    • 4. 容器 / 云原生类（第 4、5 篇详解）
  • 七、学完本篇，你应该建立的 3 个核心认知
  • 八、本系列阅读路线

一、先想清楚：为什么会有"云计算"？

技术从来不是凭空出现的，每一个技术都是为了解决上一个阶段的痛点。把这条"痛点 → 新技术"的链子理清楚，你就不会觉得技术多而乱。

1. 传统 IT 时代（物理机）的三个痛点

• 浪费：一台物理服务器只能跑一个业务，CPU 利用率常常只有 10%~20%，但你还得为它买电、买机房、做维护。
• 笨重：上线一个新业务，要采购服务器 → 搬机房 → 装系统 → 布线，周期以"周 / 月"计。
• 难扩展：业务突然火了，物理机性能不够，只能再买机器，无法"立刻"扩容。

2. 解决思路的演进（这是整个系列的主线）

#mermaid-svg-V429cx9DyNHJSxYE{font-family:\”trebuchet ms\”,verdana,arial,sans-serif;font-size:16px;fill:#333;}@keyframes edge-animation-frame{from{stroke-dashoffset:0;}}@keyframes dash{to{stroke-dashoffset:0;}}#mermaid-svg-V429cx9DyNHJSxYE .edge-animation-slow{stroke-dasharray:9,5!important;stroke-dashoffset:900;animation:dash 50s linear infinite;stroke-linecap:round;}#mermaid-svg-V429cx9DyNHJSxYE .edge-animation-fast{stroke-dasharray:9,5!important;stroke-dashoffset:900;animation:dash 20s linear infinite;stroke-linecap:round;}#mermaid-svg-V429cx9DyNHJSxYE .error-icon{fill:#552222;}#mermaid-svg-V429cx9DyNHJSxYE .error-text{fill:#552222;stroke:#552222;}#mermaid-svg-V429cx9DyNHJSxYE .edge-thickness-normal{stroke-width:1px;}#mermaid-svg-V429cx9DyNHJSxYE .edge-thickness-thick{stroke-width:3.5px;}#mermaid-svg-V429cx9DyNHJSxYE .edge-pattern-solid{stroke-dasharray:0;}#mermaid-svg-V429cx9DyNHJSxYE .edge-thickness-invisible{stroke-width:0;fill:none;}#mermaid-svg-V429cx9DyNHJSxYE .edge-pattern-dashed{stroke-dasharray:3;}#mermaid-svg-V429cx9DyNHJSxYE .edge-pattern-dotted{stroke-dasharray:2;}#mermaid-svg-V429cx9DyNHJSxYE .marker{fill:#333333;stroke:#333333;}#mermaid-svg-V429cx9DyNHJSxYE .marker.cross{stroke:#333333;}#mermaid-svg-V429cx9DyNHJSxYE svg{font-family:\”trebuchet ms\”,verdana,arial,sans-serif;font-size:16px;}#mermaid-svg-V429cx9DyNHJSxYE p{margin:0;}#mermaid-svg-V429cx9DyNHJSxYE .edge{stroke-width:3;}#mermaid-svg-V429cx9DyNHJSxYE .section–1 rect,#mermaid-svg-V429cx9DyNHJSxYE .section–1 path,#mermaid-svg-V429cx9DyNHJSxYE .section–1 circle,#mermaid-svg-V429cx9DyNHJSxYE .section–1 path{fill:hsl(240, 100%, 76.2745098039%);}#mermaid-svg-V429cx9DyNHJSxYE .section–1 text{fill:#ffffff;}#mermaid-svg-V429cx9DyNHJSxYE .node-icon–1{font-size:40px;color:#ffffff;}#mermaid-svg-V429cx9DyNHJSxYE .section-edge–1{stroke:hsl(240, 100%, 76.2745098039%);}#mermaid-svg-V429cx9DyNHJSxYE .edge-depth–1{stroke-width:17;}#mermaid-svg-V429cx9DyNHJSxYE .section–1 line{stroke:hsl(60, 100%, 86.2745098039%);stroke-width:3;}#mermaid-svg-V429cx9DyNHJSxYE .lineWrapper line{stroke:#ffffff;}#mermaid-svg-V429cx9DyNHJSxYE .disabled,#mermaid-svg-V429cx9DyNHJSxYE .disabled circle,#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:lightgray;}#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:#efefef;}#mermaid-svg-V429cx9DyNHJSxYE .section-0 rect,#mermaid-svg-V429cx9DyNHJSxYE .section-0 path,#mermaid-svg-V429cx9DyNHJSxYE .section-0 circle,#mermaid-svg-V429cx9DyNHJSxYE .section-0 path{fill:hsl(60, 100%, 73.5294117647%);}#mermaid-svg-V429cx9DyNHJSxYE .section-0 text{fill:black;}#mermaid-svg-V429cx9DyNHJSxYE .node-icon-0{font-size:40px;color:black;}#mermaid-svg-V429cx9DyNHJSxYE .section-edge-0{stroke:hsl(60, 100%, 73.5294117647%);}#mermaid-svg-V429cx9DyNHJSxYE .edge-depth-0{stroke-width:14;}#mermaid-svg-V429cx9DyNHJSxYE .section-0 line{stroke:hsl(240, 100%, 83.5294117647%);stroke-width:3;}#mermaid-svg-V429cx9DyNHJSxYE .lineWrapper line{stroke:black;}#mermaid-svg-V429cx9DyNHJSxYE .disabled,#mermaid-svg-V429cx9DyNHJSxYE .disabled circle,#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:lightgray;}#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:#efefef;}#mermaid-svg-V429cx9DyNHJSxYE .section-1 rect,#mermaid-svg-V429cx9DyNHJSxYE .section-1 path,#mermaid-svg-V429cx9DyNHJSxYE .section-1 circle,#mermaid-svg-V429cx9DyNHJSxYE .section-1 path{fill:hsl(80, 100%, 76.2745098039%);}#mermaid-svg-V429cx9DyNHJSxYE .section-1 text{fill:black;}#mermaid-svg-V429cx9DyNHJSxYE .node-icon-1{font-size:40px;color:black;}#mermaid-svg-V429cx9DyNHJSxYE .section-edge-1{stroke:hsl(80, 100%, 76.2745098039%);}#mermaid-svg-V429cx9DyNHJSxYE .edge-depth-1{stroke-width:11;}#mermaid-svg-V429cx9DyNHJSxYE .section-1 line{stroke:hsl(260, 100%, 86.2745098039%);stroke-width:3;}#mermaid-svg-V429cx9DyNHJSxYE .lineWrapper line{stroke:black;}#mermaid-svg-V429cx9DyNHJSxYE .disabled,#mermaid-svg-V429cx9DyNHJSxYE .disabled circle,#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:lightgray;}#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:#efefef;}#mermaid-svg-V429cx9DyNHJSxYE .section-2 rect,#mermaid-svg-V429cx9DyNHJSxYE .section-2 path,#mermaid-svg-V429cx9DyNHJSxYE .section-2 circle,#mermaid-svg-V429cx9DyNHJSxYE .section-2 path{fill:hsl(270, 100%, 76.2745098039%);}#mermaid-svg-V429cx9DyNHJSxYE .section-2 text{fill:#ffffff;}#mermaid-svg-V429cx9DyNHJSxYE .node-icon-2{font-size:40px;color:#ffffff;}#mermaid-svg-V429cx9DyNHJSxYE .section-edge-2{stroke:hsl(270, 100%, 76.2745098039%);}#mermaid-svg-V429cx9DyNHJSxYE .edge-depth-2{stroke-width:8;}#mermaid-svg-V429cx9DyNHJSxYE .section-2 line{stroke:hsl(90, 100%, 86.2745098039%);stroke-width:3;}#mermaid-svg-V429cx9DyNHJSxYE .lineWrapper line{stroke:#ffffff;}#mermaid-svg-V429cx9DyNHJSxYE .disabled,#mermaid-svg-V429cx9DyNHJSxYE .disabled circle,#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:lightgray;}#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:#efefef;}#mermaid-svg-V429cx9DyNHJSxYE .section-3 rect,#mermaid-svg-V429cx9DyNHJSxYE .section-3 path,#mermaid-svg-V429cx9DyNHJSxYE .section-3 circle,#mermaid-svg-V429cx9DyNHJSxYE .section-3 path{fill:hsl(300, 100%, 76.2745098039%);}#mermaid-svg-V429cx9DyNHJSxYE .section-3 text{fill:black;}#mermaid-svg-V429cx9DyNHJSxYE .node-icon-3{font-size:40px;color:black;}#mermaid-svg-V429cx9DyNHJSxYE .section-edge-3{stroke:hsl(300, 100%, 76.2745098039%);}#mermaid-svg-V429cx9DyNHJSxYE .edge-depth-3{stroke-width:5;}#mermaid-svg-V429cx9DyNHJSxYE .section-3 line{stroke:hsl(120, 100%, 86.2745098039%);stroke-width:3;}#mermaid-svg-V429cx9DyNHJSxYE .lineWrapper line{stroke:black;}#mermaid-svg-V429cx9DyNHJSxYE .disabled,#mermaid-svg-V429cx9DyNHJSxYE .disabled circle,#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:lightgray;}#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:#efefef;}#mermaid-svg-V429cx9DyNHJSxYE .section-4 rect,#mermaid-svg-V429cx9DyNHJSxYE .section-4 path,#mermaid-svg-V429cx9DyNHJSxYE .section-4 circle,#mermaid-svg-V429cx9DyNHJSxYE .section-4 path{fill:hsl(330, 100%, 76.2745098039%);}#mermaid-svg-V429cx9DyNHJSxYE .section-4 text{fill:black;}#mermaid-svg-V429cx9DyNHJSxYE .node-icon-4{font-size:40px;color:black;}#mermaid-svg-V429cx9DyNHJSxYE .section-edge-4{stroke:hsl(330, 100%, 76.2745098039%);}#mermaid-svg-V429cx9DyNHJSxYE .edge-depth-4{stroke-width:2;}#mermaid-svg-V429cx9DyNHJSxYE .section-4 line{stroke:hsl(150, 100%, 86.2745098039%);stroke-width:3;}#mermaid-svg-V429cx9DyNHJSxYE .lineWrapper line{stroke:black;}#mermaid-svg-V429cx9DyNHJSxYE .disabled,#mermaid-svg-V429cx9DyNHJSxYE .disabled circle,#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:lightgray;}#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:#efefef;}#mermaid-svg-V429cx9DyNHJSxYE .section-5 rect,#mermaid-svg-V429cx9DyNHJSxYE .section-5 path,#mermaid-svg-V429cx9DyNHJSxYE .section-5 circle,#mermaid-svg-V429cx9DyNHJSxYE .section-5 path{fill:hsl(0, 100%, 76.2745098039%);}#mermaid-svg-V429cx9DyNHJSxYE .section-5 text{fill:black;}#mermaid-svg-V429cx9DyNHJSxYE .node-icon-5{font-size:40px;color:black;}#mermaid-svg-V429cx9DyNHJSxYE .section-edge-5{stroke:hsl(0, 100%, 76.2745098039%);}#mermaid-svg-V429cx9DyNHJSxYE .edge-depth-5{stroke-width:-1;}#mermaid-svg-V429cx9DyNHJSxYE .section-5 line{stroke:hsl(180, 100%, 86.2745098039%);stroke-width:3;}#mermaid-svg-V429cx9DyNHJSxYE .lineWrapper line{stroke:black;}#mermaid-svg-V429cx9DyNHJSxYE .disabled,#mermaid-svg-V429cx9DyNHJSxYE .disabled circle,#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:lightgray;}#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:#efefef;}#mermaid-svg-V429cx9DyNHJSxYE .section-6 rect,#mermaid-svg-V429cx9DyNHJSxYE .section-6 path,#mermaid-svg-V429cx9DyNHJSxYE .section-6 circle,#mermaid-svg-V429cx9DyNHJSxYE .section-6 path{fill:hsl(30, 100%, 76.2745098039%);}#mermaid-svg-V429cx9DyNHJSxYE .section-6 text{fill:black;}#mermaid-svg-V429cx9DyNHJSxYE .node-icon-6{font-size:40px;color:black;}#mermaid-svg-V429cx9DyNHJSxYE .section-edge-6{stroke:hsl(30, 100%, 76.2745098039%);}#mermaid-svg-V429cx9DyNHJSxYE .edge-depth-6{stroke-width:-4;}#mermaid-svg-V429cx9DyNHJSxYE .section-6 line{stroke:hsl(210, 100%, 86.2745098039%);stroke-width:3;}#mermaid-svg-V429cx9DyNHJSxYE .lineWrapper line{stroke:black;}#mermaid-svg-V429cx9DyNHJSxYE .disabled,#mermaid-svg-V429cx9DyNHJSxYE .disabled circle,#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:lightgray;}#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:#efefef;}#mermaid-svg-V429cx9DyNHJSxYE .section-7 rect,#mermaid-svg-V429cx9DyNHJSxYE .section-7 path,#mermaid-svg-V429cx9DyNHJSxYE .section-7 circle,#mermaid-svg-V429cx9DyNHJSxYE .section-7 path{fill:hsl(90, 100%, 76.2745098039%);}#mermaid-svg-V429cx9DyNHJSxYE .section-7 text{fill:black;}#mermaid-svg-V429cx9DyNHJSxYE .node-icon-7{font-size:40px;color:black;}#mermaid-svg-V429cx9DyNHJSxYE .section-edge-7{stroke:hsl(90, 100%, 76.2745098039%);}#mermaid-svg-V429cx9DyNHJSxYE .edge-depth-7{stroke-width:-7;}#mermaid-svg-V429cx9DyNHJSxYE .section-7 line{stroke:hsl(270, 100%, 86.2745098039%);stroke-width:3;}#mermaid-svg-V429cx9DyNHJSxYE .lineWrapper line{stroke:black;}#mermaid-svg-V429cx9DyNHJSxYE .disabled,#mermaid-svg-V429cx9DyNHJSxYE .disabled circle,#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:lightgray;}#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:#efefef;}#mermaid-svg-V429cx9DyNHJSxYE .section-8 rect,#mermaid-svg-V429cx9DyNHJSxYE .section-8 path,#mermaid-svg-V429cx9DyNHJSxYE .section-8 circle,#mermaid-svg-V429cx9DyNHJSxYE .section-8 path{fill:hsl(150, 100%, 76.2745098039%);}#mermaid-svg-V429cx9DyNHJSxYE .section-8 text{fill:black;}#mermaid-svg-V429cx9DyNHJSxYE .node-icon-8{font-size:40px;color:black;}#mermaid-svg-V429cx9DyNHJSxYE .section-edge-8{stroke:hsl(150, 100%, 76.2745098039%);}#mermaid-svg-V429cx9DyNHJSxYE .edge-depth-8{stroke-width:-10;}#mermaid-svg-V429cx9DyNHJSxYE .section-8 line{stroke:hsl(330, 100%, 86.2745098039%);stroke-width:3;}#mermaid-svg-V429cx9DyNHJSxYE .lineWrapper line{stroke:black;}#mermaid-svg-V429cx9DyNHJSxYE .disabled,#mermaid-svg-V429cx9DyNHJSxYE .disabled circle,#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:lightgray;}#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:#efefef;}#mermaid-svg-V429cx9DyNHJSxYE .section-9 rect,#mermaid-svg-V429cx9DyNHJSxYE .section-9 path,#mermaid-svg-V429cx9DyNHJSxYE .section-9 circle,#mermaid-svg-V429cx9DyNHJSxYE .section-9 path{fill:hsl(180, 100%, 76.2745098039%);}#mermaid-svg-V429cx9DyNHJSxYE .section-9 text{fill:black;}#mermaid-svg-V429cx9DyNHJSxYE .node-icon-9{font-size:40px;color:black;}#mermaid-svg-V429cx9DyNHJSxYE .section-edge-9{stroke:hsl(180, 100%, 76.2745098039%);}#mermaid-svg-V429cx9DyNHJSxYE .edge-depth-9{stroke-width:-13;}#mermaid-svg-V429cx9DyNHJSxYE .section-9 line{stroke:hsl(0, 100%, 86.2745098039%);stroke-width:3;}#mermaid-svg-V429cx9DyNHJSxYE .lineWrapper line{stroke:black;}#mermaid-svg-V429cx9DyNHJSxYE .disabled,#mermaid-svg-V429cx9DyNHJSxYE .disabled circle,#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:lightgray;}#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:#efefef;}#mermaid-svg-V429cx9DyNHJSxYE .section-10 rect,#mermaid-svg-V429cx9DyNHJSxYE .section-10 path,#mermaid-svg-V429cx9DyNHJSxYE .section-10 circle,#mermaid-svg-V429cx9DyNHJSxYE .section-10 path{fill:hsl(210, 100%, 76.2745098039%);}#mermaid-svg-V429cx9DyNHJSxYE .section-10 text{fill:black;}#mermaid-svg-V429cx9DyNHJSxYE .node-icon-10{font-size:40px;color:black;}#mermaid-svg-V429cx9DyNHJSxYE .section-edge-10{stroke:hsl(210, 100%, 76.2745098039%);}#mermaid-svg-V429cx9DyNHJSxYE .edge-depth-10{stroke-width:-16;}#mermaid-svg-V429cx9DyNHJSxYE .section-10 line{stroke:hsl(30, 100%, 86.2745098039%);stroke-width:3;}#mermaid-svg-V429cx9DyNHJSxYE .lineWrapper line{stroke:black;}#mermaid-svg-V429cx9DyNHJSxYE .disabled,#mermaid-svg-V429cx9DyNHJSxYE .disabled circle,#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:lightgray;}#mermaid-svg-V429cx9DyNHJSxYE .disabled text{fill:#efefef;}#mermaid-svg-V429cx9DyNHJSxYE .section-root rect,#mermaid-svg-V429cx9DyNHJSxYE .section-root path,#mermaid-svg-V429cx9DyNHJSxYE .section-root circle{fill:hsl(240, 100%, 46.2745098039%);}#mermaid-svg-V429cx9DyNHJSxYE .section-root text{fill:#ffffff;}#mermaid-svg-V429cx9DyNHJSxYE .icon-container{height:100%;display:flex;justify-content:center;align-items:center;}#mermaid-svg-V429cx9DyNHJSxYE .edge{fill:none;}#mermaid-svg-V429cx9DyNHJSxYE .eventWrapper{filter:brightness(120%);}#mermaid-svg-V429cx9DyNHJSxYE :root{–mermaid-font-family:\”trebuchet ms\”,verdana,arial,sans-serif;}

物理机时代

一台机器一个业务

利用率低、上线慢、扩容难

虚拟化时代

一台物理机虚拟成多台虚拟机

解决利用率与隔离问题（KVM/ESXi）

云计算(IaaS)

用软件把大量虚拟资源统一管理、自助交付

解决资源池化与按需付费（OpenStack/公有云）

容器化时代

更轻量的"进程级"隔离

+ 标准化打包

解决环境一致性与交付速度（Docker）

云原生时代

容器编排 + 微服务 +

自动化运维

解决大规模容器的管理与弹性（K8s/Service

Mesh）

云计算技术演进主线（每一步都在解决上一步的痛点）

一句话记忆：

• 虚拟化把"一台机器"变成"多台机器"；
• 云计算把"一堆机器"变成"一个资源池，随取随用"；
• 容器把"应用和它的环境"打包成标准件，到处可跑；
• 云原生是一套"天生为云设计"的应用架构和运维方法，让应用能充分享受云的弹性。

二、云计算的官方定义与 5 个特征

美国国家标准与技术研究院（NIST）的定义是行业公认的：

**云计算（Cloud Computing）**是一种按使用量付费的模式，它提供可用的、便捷的、按需的网络访问，进入可配置的计算资源共享池（资源包括网络、服务器、存储、应用软件、服务），这些资源能被快速提供，只需投入很少的管理工作，或与服务供应商进行很少的交互。

它有 5 个基本特征：

理解要点："资源池化"是云计算的灵魂——这正是为什么要先学服务器、存储、网络、虚拟化：它们是构成这个"资源池"的底层材料。

三、云计算的两大分类（这是最容易混淆的地方）

云计算有两个正交的、互不相关的分类维度，很多人把它们搅在一起：

• 维度一：服务模式——云给你提供的是"哪一层的东西"？（IaaS / PaaS / SaaS）
• 维度二：部署模式——这朵云"建在哪、给谁用"？（公有云 / 私有云 / 混合云）

1. 服务模式：IaaS / PaaS / SaaS（按"你管多少"划分）

记住一个核心判断方法：从下往上，厂商帮你管得越来越多，你自己管得越来越少。

#mermaid-svg-6jm9p1hwZs5O6ZpK{font-family:\”trebuchet ms\”,verdana,arial,sans-serif;font-size:16px;fill:#333;}@keyframes edge-animation-frame{from{stroke-dashoffset:0;}}@keyframes dash{to{stroke-dashoffset:0;}}#mermaid-svg-6jm9p1hwZs5O6ZpK .edge-animation-slow{stroke-dasharray:9,5!important;stroke-dashoffset:900;animation:dash 50s linear infinite;stroke-linecap:round;}#mermaid-svg-6jm9p1hwZs5O6ZpK .edge-animation-fast{stroke-dasharray:9,5!important;stroke-dashoffset:900;animation:dash 20s linear infinite;stroke-linecap:round;}#mermaid-svg-6jm9p1hwZs5O6ZpK .error-icon{fill:#552222;}#mermaid-svg-6jm9p1hwZs5O6ZpK .error-text{fill:#552222;stroke:#552222;}#mermaid-svg-6jm9p1hwZs5O6ZpK .edge-thickness-normal{stroke-width:1px;}#mermaid-svg-6jm9p1hwZs5O6ZpK .edge-thickness-thick{stroke-width:3.5px;}#mermaid-svg-6jm9p1hwZs5O6ZpK .edge-pattern-solid{stroke-dasharray:0;}#mermaid-svg-6jm9p1hwZs5O6ZpK .edge-thickness-invisible{stroke-width:0;fill:none;}#mermaid-svg-6jm9p1hwZs5O6ZpK .edge-pattern-dashed{stroke-dasharray:3;}#mermaid-svg-6jm9p1hwZs5O6ZpK .edge-pattern-dotted{stroke-dasharray:2;}#mermaid-svg-6jm9p1hwZs5O6ZpK .marker{fill:#333333;stroke:#333333;}#mermaid-svg-6jm9p1hwZs5O6ZpK .marker.cross{stroke:#333333;}#mermaid-svg-6jm9p1hwZs5O6ZpK svg{font-family:\”trebuchet ms\”,verdana,arial,sans-serif;font-size:16px;}#mermaid-svg-6jm9p1hwZs5O6ZpK p{margin:0;}#mermaid-svg-6jm9p1hwZs5O6ZpK .label{font-family:\”trebuchet ms\”,verdana,arial,sans-serif;color:#333;}#mermaid-svg-6jm9p1hwZs5O6ZpK .cluster-label text{fill:#333;}#mermaid-svg-6jm9p1hwZs5O6ZpK .cluster-label span{color:#333;}#mermaid-svg-6jm9p1hwZs5O6ZpK .cluster-label span p{background-color:transparent;}#mermaid-svg-6jm9p1hwZs5O6ZpK .label text,#mermaid-svg-6jm9p1hwZs5O6ZpK span{fill:#333;color:#333;}#mermaid-svg-6jm9p1hwZs5O6ZpK .node rect,#mermaid-svg-6jm9p1hwZs5O6ZpK .node circle,#mermaid-svg-6jm9p1hwZs5O6ZpK .node ellipse,#mermaid-svg-6jm9p1hwZs5O6ZpK .node polygon,#mermaid-svg-6jm9p1hwZs5O6ZpK .node path{fill:#ECECFF;stroke:#9370DB;stroke-width:1px;}#mermaid-svg-6jm9p1hwZs5O6ZpK .rough-node .label text,#mermaid-svg-6jm9p1hwZs5O6ZpK .node .label text,#mermaid-svg-6jm9p1hwZs5O6ZpK .image-shape .label,#mermaid-svg-6jm9p1hwZs5O6ZpK .icon-shape .label{text-anchor:middle;}#mermaid-svg-6jm9p1hwZs5O6ZpK .node .katex path{fill:#000;stroke:#000;stroke-width:1px;}#mermaid-svg-6jm9p1hwZs5O6ZpK .rough-node .label,#mermaid-svg-6jm9p1hwZs5O6ZpK .node .label,#mermaid-svg-6jm9p1hwZs5O6ZpK .image-shape .label,#mermaid-svg-6jm9p1hwZs5O6ZpK .icon-shape .label{text-align:center;}#mermaid-svg-6jm9p1hwZs5O6ZpK .node.clickable{cursor:pointer;}#mermaid-svg-6jm9p1hwZs5O6ZpK .root .anchor path{fill:#333333!important;stroke-width:0;stroke:#333333;}#mermaid-svg-6jm9p1hwZs5O6ZpK .arrowheadPath{fill:#333333;}#mermaid-svg-6jm9p1hwZs5O6ZpK .edgePath .path{stroke:#333333;stroke-width:2.0px;}#mermaid-svg-6jm9p1hwZs5O6ZpK .flowchart-link{stroke:#333333;fill:none;}#mermaid-svg-6jm9p1hwZs5O6ZpK .edgeLabel{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-6jm9p1hwZs5O6ZpK .edgeLabel p{background-color:rgba(232,232,232, 0.8);}#mermaid-svg-6jm9p1hwZs5O6ZpK .edgeLabel rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-6jm9p1hwZs5O6ZpK .labelBkg{background-color:rgba(232, 232, 232, 0.5);}#mermaid-svg-6jm9p1hwZs5O6ZpK .cluster rect{fill:#ffffde;stroke:#aaaa33;stroke-width:1px;}#mermaid-svg-6jm9p1hwZs5O6ZpK .cluster text{fill:#333;}#mermaid-svg-6jm9p1hwZs5O6ZpK .cluster span{color:#333;}#mermaid-svg-6jm9p1hwZs5O6ZpK div.mermaidTooltip{position:absolute;text-align:center;max-width:200px;padding:2px;font-family:\”trebuchet ms\”,verdana,arial,sans-serif;font-size:12px;background:hsl(80, 100%, 96.2745098039%);border:1px solid #aaaa33;border-radius:2px;pointer-events:none;z-index:100;}#mermaid-svg-6jm9p1hwZs5O6ZpK .flowchartTitleText{text-anchor:middle;font-size:18px;fill:#333;}#mermaid-svg-6jm9p1hwZs5O6ZpK rect.text{fill:none;stroke-width:0;}#mermaid-svg-6jm9p1hwZs5O6ZpK .icon-shape,#mermaid-svg-6jm9p1hwZs5O6ZpK .image-shape{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-6jm9p1hwZs5O6ZpK .icon-shape p,#mermaid-svg-6jm9p1hwZs5O6ZpK .image-shape p{background-color:rgba(232,232,232, 0.8);padding:2px;}#mermaid-svg-6jm9p1hwZs5O6ZpK .icon-shape .label rect,#mermaid-svg-6jm9p1hwZs5O6ZpK .image-shape .label rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-6jm9p1hwZs5O6ZpK .label-icon{display:inline-block;height:1em;overflow:visible;vertical-align:-0.125em;}#mermaid-svg-6jm9p1hwZs5O6ZpK .node .label-icon path{fill:currentColor;stroke:revert;stroke-width:revert;}#mermaid-svg-6jm9p1hwZs5O6ZpK :root{–mermaid-font-family:\”trebuchet ms\”,verdana,arial,sans-serif;}#mermaid-svg-6jm9p1hwZs5O6ZpK .you>*{fill:#ffe6cc!important;stroke:#d79b00!important;color:#000!important;}#mermaid-svg-6jm9p1hwZs5O6ZpK .you span{fill:#ffe6cc!important;stroke:#d79b00!important;color:#000!important;}#mermaid-svg-6jm9p1hwZs5O6ZpK .you tspan{fill:#000!important;}#mermaid-svg-6jm9p1hwZs5O6ZpK .vendor>*{fill:#d5e8d4!important;stroke:#82b366!important;color:#000!important;}#mermaid-svg-6jm9p1hwZs5O6ZpK .vendor span{fill:#d5e8d4!important;stroke:#82b366!important;color:#000!important;}#mermaid-svg-6jm9p1hwZs5O6ZpK .vendor tspan{fill:#000!important;}

SaaS 软件即服务

应用（直接用）

数据/中间件

操作系统

虚拟化

服务器/存储/网络

PaaS 平台即服务

应用

数据/中间件

操作系统

虚拟化

服务器/存储/网络

IaaS 基础设施即服务

应用

数据/中间件

操作系统

虚拟化

服务器/存储/网络

传统自建（On-Premise）—— 你什么都自己管

应用

数据/中间件

操作系统

虚拟化

服务器/存储/网络

橙色 = 你自己管理，绿色 = 云厂商管理。

生活化类比（开饭店）：

• IaaS：租一个空店面 + 水电煤，灶台、装修、厨师你自己搞定。
• PaaS：租一个已经装修好、带灶台设备的"共享厨房"，你只管带菜和厨师来炒菜。
• SaaS：直接点外卖，别人做好端给你，你只管吃。

延伸模式（知道即可）：

• CaaS（Container as a Service，容器即服务）：介于 IaaS 和 PaaS 之间，提供容器的运行与编排，如阿里云 ACK、AWS ECS。
• FaaS（Function as a Service，函数即服务）：Serverless 的核心，你只写一个个函数，连服务器都不用管，如 AWS Lambda。
• DaaS（Desktop as a Service，桌面即服务）：云端的虚拟桌面，如阿里云无影。

2. 部署模式：公有云 / 私有云 / 混合云 / 多云

四、什么是"云原生"？它和"云计算"是什么关系？

1. 定义

云计算是一个更宽泛的概念（从 IaaS 到 SaaS 都算）；**云原生（Cloud Native）**是云计算发展到容器阶段后，一套"专门为了在云上充分发挥弹性、自动化优势而设计应用"的方法论。

CNCF（云原生计算基金会，云原生领域最权威的组织）给出的定义中，云原生的核心技术包括：

• 容器（Containers）：应用的标准化打包与运行单元；
• 服务网格（Service Mesh）：负责微服务之间通信的基础设施层；
• 微服务（Microservices）：把大应用拆成小而独立的服务；
• 不可变基础设施（Immutable Infrastructure）：容器镜像一旦构建好就不修改，要更新就重新构建、整体替换；
• 声明式 API（Declarative APIs）：你只描述"我想要什么状态"，系统自动去达成（如 K8s 的 YAML）。

2. 云原生的"四大支柱"（最常用的记忆模型）

#mermaid-svg-qaQ2L8giX9w2bEsN{font-family:\”trebuchet ms\”,verdana,arial,sans-serif;font-size:16px;fill:#333;}@keyframes edge-animation-frame{from{stroke-dashoffset:0;}}@keyframes dash{to{stroke-dashoffset:0;}}#mermaid-svg-qaQ2L8giX9w2bEsN .edge-animation-slow{stroke-dasharray:9,5!important;stroke-dashoffset:900;animation:dash 50s linear infinite;stroke-linecap:round;}#mermaid-svg-qaQ2L8giX9w2bEsN .edge-animation-fast{stroke-dasharray:9,5!important;stroke-dashoffset:900;animation:dash 20s linear infinite;stroke-linecap:round;}#mermaid-svg-qaQ2L8giX9w2bEsN .error-icon{fill:#552222;}#mermaid-svg-qaQ2L8giX9w2bEsN .error-text{fill:#552222;stroke:#552222;}#mermaid-svg-qaQ2L8giX9w2bEsN .edge-thickness-normal{stroke-width:1px;}#mermaid-svg-qaQ2L8giX9w2bEsN .edge-thickness-thick{stroke-width:3.5px;}#mermaid-svg-qaQ2L8giX9w2bEsN .edge-pattern-solid{stroke-dasharray:0;}#mermaid-svg-qaQ2L8giX9w2bEsN .edge-thickness-invisible{stroke-width:0;fill:none;}#mermaid-svg-qaQ2L8giX9w2bEsN .edge-pattern-dashed{stroke-dasharray:3;}#mermaid-svg-qaQ2L8giX9w2bEsN .edge-pattern-dotted{stroke-dasharray:2;}#mermaid-svg-qaQ2L8giX9w2bEsN .marker{fill:#333333;stroke:#333333;}#mermaid-svg-qaQ2L8giX9w2bEsN .marker.cross{stroke:#333333;}#mermaid-svg-qaQ2L8giX9w2bEsN svg{font-family:\”trebuchet ms\”,verdana,arial,sans-serif;font-size:16px;}#mermaid-svg-qaQ2L8giX9w2bEsN p{margin:0;}#mermaid-svg-qaQ2L8giX9w2bEsN .edge{stroke-width:3;}#mermaid-svg-qaQ2L8giX9w2bEsN .section–1 rect,#mermaid-svg-qaQ2L8giX9w2bEsN .section–1 path,#mermaid-svg-qaQ2L8giX9w2bEsN .section–1 circle,#mermaid-svg-qaQ2L8giX9w2bEsN .section–1 polygon,#mermaid-svg-qaQ2L8giX9w2bEsN .section–1 path{fill:hsl(240, 100%, 76.2745098039%);}#mermaid-svg-qaQ2L8giX9w2bEsN .section–1 text{fill:#ffffff;}#mermaid-svg-qaQ2L8giX9w2bEsN .node-icon–1{font-size:40px;color:#ffffff;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-edge–1{stroke:hsl(240, 100%, 76.2745098039%);}#mermaid-svg-qaQ2L8giX9w2bEsN .edge-depth–1{stroke-width:17;}#mermaid-svg-qaQ2L8giX9w2bEsN .section–1 line{stroke:hsl(60, 100%, 86.2745098039%);stroke-width:3;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled circle,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:lightgray;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:#efefef;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-0 rect,#mermaid-svg-qaQ2L8giX9w2bEsN .section-0 path,#mermaid-svg-qaQ2L8giX9w2bEsN .section-0 circle,#mermaid-svg-qaQ2L8giX9w2bEsN .section-0 polygon,#mermaid-svg-qaQ2L8giX9w2bEsN .section-0 path{fill:hsl(60, 100%, 73.5294117647%);}#mermaid-svg-qaQ2L8giX9w2bEsN .section-0 text{fill:black;}#mermaid-svg-qaQ2L8giX9w2bEsN .node-icon-0{font-size:40px;color:black;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-edge-0{stroke:hsl(60, 100%, 73.5294117647%);}#mermaid-svg-qaQ2L8giX9w2bEsN .edge-depth-0{stroke-width:14;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-0 line{stroke:hsl(240, 100%, 83.5294117647%);stroke-width:3;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled circle,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:lightgray;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:#efefef;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-1 rect,#mermaid-svg-qaQ2L8giX9w2bEsN .section-1 path,#mermaid-svg-qaQ2L8giX9w2bEsN .section-1 circle,#mermaid-svg-qaQ2L8giX9w2bEsN .section-1 polygon,#mermaid-svg-qaQ2L8giX9w2bEsN .section-1 path{fill:hsl(80, 100%, 76.2745098039%);}#mermaid-svg-qaQ2L8giX9w2bEsN .section-1 text{fill:black;}#mermaid-svg-qaQ2L8giX9w2bEsN .node-icon-1{font-size:40px;color:black;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-edge-1{stroke:hsl(80, 100%, 76.2745098039%);}#mermaid-svg-qaQ2L8giX9w2bEsN .edge-depth-1{stroke-width:11;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-1 line{stroke:hsl(260, 100%, 86.2745098039%);stroke-width:3;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled circle,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:lightgray;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:#efefef;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-2 rect,#mermaid-svg-qaQ2L8giX9w2bEsN .section-2 path,#mermaid-svg-qaQ2L8giX9w2bEsN .section-2 circle,#mermaid-svg-qaQ2L8giX9w2bEsN .section-2 polygon,#mermaid-svg-qaQ2L8giX9w2bEsN .section-2 path{fill:hsl(270, 100%, 76.2745098039%);}#mermaid-svg-qaQ2L8giX9w2bEsN .section-2 text{fill:#ffffff;}#mermaid-svg-qaQ2L8giX9w2bEsN .node-icon-2{font-size:40px;color:#ffffff;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-edge-2{stroke:hsl(270, 100%, 76.2745098039%);}#mermaid-svg-qaQ2L8giX9w2bEsN .edge-depth-2{stroke-width:8;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-2 line{stroke:hsl(90, 100%, 86.2745098039%);stroke-width:3;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled circle,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:lightgray;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:#efefef;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-3 rect,#mermaid-svg-qaQ2L8giX9w2bEsN .section-3 path,#mermaid-svg-qaQ2L8giX9w2bEsN .section-3 circle,#mermaid-svg-qaQ2L8giX9w2bEsN .section-3 polygon,#mermaid-svg-qaQ2L8giX9w2bEsN .section-3 path{fill:hsl(300, 100%, 76.2745098039%);}#mermaid-svg-qaQ2L8giX9w2bEsN .section-3 text{fill:black;}#mermaid-svg-qaQ2L8giX9w2bEsN .node-icon-3{font-size:40px;color:black;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-edge-3{stroke:hsl(300, 100%, 76.2745098039%);}#mermaid-svg-qaQ2L8giX9w2bEsN .edge-depth-3{stroke-width:5;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-3 line{stroke:hsl(120, 100%, 86.2745098039%);stroke-width:3;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled circle,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:lightgray;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:#efefef;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-4 rect,#mermaid-svg-qaQ2L8giX9w2bEsN .section-4 path,#mermaid-svg-qaQ2L8giX9w2bEsN .section-4 circle,#mermaid-svg-qaQ2L8giX9w2bEsN .section-4 polygon,#mermaid-svg-qaQ2L8giX9w2bEsN .section-4 path{fill:hsl(330, 100%, 76.2745098039%);}#mermaid-svg-qaQ2L8giX9w2bEsN .section-4 text{fill:black;}#mermaid-svg-qaQ2L8giX9w2bEsN .node-icon-4{font-size:40px;color:black;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-edge-4{stroke:hsl(330, 100%, 76.2745098039%);}#mermaid-svg-qaQ2L8giX9w2bEsN .edge-depth-4{stroke-width:2;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-4 line{stroke:hsl(150, 100%, 86.2745098039%);stroke-width:3;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled circle,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:lightgray;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:#efefef;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-5 rect,#mermaid-svg-qaQ2L8giX9w2bEsN .section-5 path,#mermaid-svg-qaQ2L8giX9w2bEsN .section-5 circle,#mermaid-svg-qaQ2L8giX9w2bEsN .section-5 polygon,#mermaid-svg-qaQ2L8giX9w2bEsN .section-5 path{fill:hsl(0, 100%, 76.2745098039%);}#mermaid-svg-qaQ2L8giX9w2bEsN .section-5 text{fill:black;}#mermaid-svg-qaQ2L8giX9w2bEsN .node-icon-5{font-size:40px;color:black;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-edge-5{stroke:hsl(0, 100%, 76.2745098039%);}#mermaid-svg-qaQ2L8giX9w2bEsN .edge-depth-5{stroke-width:-1;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-5 line{stroke:hsl(180, 100%, 86.2745098039%);stroke-width:3;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled circle,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:lightgray;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:#efefef;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-6 rect,#mermaid-svg-qaQ2L8giX9w2bEsN .section-6 path,#mermaid-svg-qaQ2L8giX9w2bEsN .section-6 circle,#mermaid-svg-qaQ2L8giX9w2bEsN .section-6 polygon,#mermaid-svg-qaQ2L8giX9w2bEsN .section-6 path{fill:hsl(30, 100%, 76.2745098039%);}#mermaid-svg-qaQ2L8giX9w2bEsN .section-6 text{fill:black;}#mermaid-svg-qaQ2L8giX9w2bEsN .node-icon-6{font-size:40px;color:black;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-edge-6{stroke:hsl(30, 100%, 76.2745098039%);}#mermaid-svg-qaQ2L8giX9w2bEsN .edge-depth-6{stroke-width:-4;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-6 line{stroke:hsl(210, 100%, 86.2745098039%);stroke-width:3;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled circle,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:lightgray;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:#efefef;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-7 rect,#mermaid-svg-qaQ2L8giX9w2bEsN .section-7 path,#mermaid-svg-qaQ2L8giX9w2bEsN .section-7 circle,#mermaid-svg-qaQ2L8giX9w2bEsN .section-7 polygon,#mermaid-svg-qaQ2L8giX9w2bEsN .section-7 path{fill:hsl(90, 100%, 76.2745098039%);}#mermaid-svg-qaQ2L8giX9w2bEsN .section-7 text{fill:black;}#mermaid-svg-qaQ2L8giX9w2bEsN .node-icon-7{font-size:40px;color:black;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-edge-7{stroke:hsl(90, 100%, 76.2745098039%);}#mermaid-svg-qaQ2L8giX9w2bEsN .edge-depth-7{stroke-width:-7;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-7 line{stroke:hsl(270, 100%, 86.2745098039%);stroke-width:3;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled circle,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:lightgray;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:#efefef;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-8 rect,#mermaid-svg-qaQ2L8giX9w2bEsN .section-8 path,#mermaid-svg-qaQ2L8giX9w2bEsN .section-8 circle,#mermaid-svg-qaQ2L8giX9w2bEsN .section-8 polygon,#mermaid-svg-qaQ2L8giX9w2bEsN .section-8 path{fill:hsl(150, 100%, 76.2745098039%);}#mermaid-svg-qaQ2L8giX9w2bEsN .section-8 text{fill:black;}#mermaid-svg-qaQ2L8giX9w2bEsN .node-icon-8{font-size:40px;color:black;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-edge-8{stroke:hsl(150, 100%, 76.2745098039%);}#mermaid-svg-qaQ2L8giX9w2bEsN .edge-depth-8{stroke-width:-10;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-8 line{stroke:hsl(330, 100%, 86.2745098039%);stroke-width:3;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled circle,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:lightgray;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:#efefef;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-9 rect,#mermaid-svg-qaQ2L8giX9w2bEsN .section-9 path,#mermaid-svg-qaQ2L8giX9w2bEsN .section-9 circle,#mermaid-svg-qaQ2L8giX9w2bEsN .section-9 polygon,#mermaid-svg-qaQ2L8giX9w2bEsN .section-9 path{fill:hsl(180, 100%, 76.2745098039%);}#mermaid-svg-qaQ2L8giX9w2bEsN .section-9 text{fill:black;}#mermaid-svg-qaQ2L8giX9w2bEsN .node-icon-9{font-size:40px;color:black;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-edge-9{stroke:hsl(180, 100%, 76.2745098039%);}#mermaid-svg-qaQ2L8giX9w2bEsN .edge-depth-9{stroke-width:-13;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-9 line{stroke:hsl(0, 100%, 86.2745098039%);stroke-width:3;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled circle,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:lightgray;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:#efefef;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-10 rect,#mermaid-svg-qaQ2L8giX9w2bEsN .section-10 path,#mermaid-svg-qaQ2L8giX9w2bEsN .section-10 circle,#mermaid-svg-qaQ2L8giX9w2bEsN .section-10 polygon,#mermaid-svg-qaQ2L8giX9w2bEsN .section-10 path{fill:hsl(210, 100%, 76.2745098039%);}#mermaid-svg-qaQ2L8giX9w2bEsN .section-10 text{fill:black;}#mermaid-svg-qaQ2L8giX9w2bEsN .node-icon-10{font-size:40px;color:black;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-edge-10{stroke:hsl(210, 100%, 76.2745098039%);}#mermaid-svg-qaQ2L8giX9w2bEsN .edge-depth-10{stroke-width:-16;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-10 line{stroke:hsl(30, 100%, 86.2745098039%);stroke-width:3;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled circle,#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:lightgray;}#mermaid-svg-qaQ2L8giX9w2bEsN .disabled text{fill:#efefef;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-root rect,#mermaid-svg-qaQ2L8giX9w2bEsN .section-root path,#mermaid-svg-qaQ2L8giX9w2bEsN .section-root circle,#mermaid-svg-qaQ2L8giX9w2bEsN .section-root polygon{fill:hsl(240, 100%, 46.2745098039%);}#mermaid-svg-qaQ2L8giX9w2bEsN .section-root text{fill:#ffffff;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-root span{color:#ffffff;}#mermaid-svg-qaQ2L8giX9w2bEsN .section-2 span{color:#ffffff;}#mermaid-svg-qaQ2L8giX9w2bEsN .icon-container{height:100%;display:flex;justify-content:center;align-items:center;}#mermaid-svg-qaQ2L8giX9w2bEsN .edge{fill:none;}#mermaid-svg-qaQ2L8giX9w2bEsN .mindmap-node-label{dy:1em;alignment-baseline:middle;text-anchor:middle;dominant-baseline:middle;text-align:center;}#mermaid-svg-qaQ2L8giX9w2bEsN :root{–mermaid-font-family:\”trebuchet ms\”,verdana,arial,sans-serif;}

云原生

微服务

应用拆分

服务注册与发现

服务网格 Istio

容器化

Docker

容器镜像

容器运行时

持续交付 DevOps

CI 持续集成

CD 持续部署

GitOps

容器编排

Kubernetes

服务自愈与弹性

声明式配置

3. 云计算 vs 云原生，一句话区分

• 云计算改变的是"资源怎么来"（从买机器变成租资源）；
• 云原生改变的是"应用怎么设计、怎么交付、怎么运维"（为云而生的应用架构）。

打个比方：云计算是"电网"（你不用自己发电了，插上就有电）；云原生是"按照用电的特点重新设计的电器"（能自动调压、按需耗电、坏了自动换）。

五、★ 核心：云计算 / 云原生完整分层全景图

这是整个系列最重要的一张图。 把老师讲过的所有技术，按照"从下到上、谁为谁服务"的顺序放进分层模型里。

#mermaid-svg-rd6vQhc1foG80tCe{font-family:\”trebuchet ms\”,verdana,arial,sans-serif;font-size:16px;fill:#333;}@keyframes edge-animation-frame{from{stroke-dashoffset:0;}}@keyframes dash{to{stroke-dashoffset:0;}}#mermaid-svg-rd6vQhc1foG80tCe .edge-animation-slow{stroke-dasharray:9,5!important;stroke-dashoffset:900;animation:dash 50s linear infinite;stroke-linecap:round;}#mermaid-svg-rd6vQhc1foG80tCe .edge-animation-fast{stroke-dasharray:9,5!important;stroke-dashoffset:900;animation:dash 20s linear infinite;stroke-linecap:round;}#mermaid-svg-rd6vQhc1foG80tCe .error-icon{fill:#552222;}#mermaid-svg-rd6vQhc1foG80tCe .error-text{fill:#552222;stroke:#552222;}#mermaid-svg-rd6vQhc1foG80tCe .edge-thickness-normal{stroke-width:1px;}#mermaid-svg-rd6vQhc1foG80tCe .edge-thickness-thick{stroke-width:3.5px;}#mermaid-svg-rd6vQhc1foG80tCe .edge-pattern-solid{stroke-dasharray:0;}#mermaid-svg-rd6vQhc1foG80tCe .edge-thickness-invisible{stroke-width:0;fill:none;}#mermaid-svg-rd6vQhc1foG80tCe .edge-pattern-dashed{stroke-dasharray:3;}#mermaid-svg-rd6vQhc1foG80tCe .edge-pattern-dotted{stroke-dasharray:2;}#mermaid-svg-rd6vQhc1foG80tCe .marker{fill:#333333;stroke:#333333;}#mermaid-svg-rd6vQhc1foG80tCe .marker.cross{stroke:#333333;}#mermaid-svg-rd6vQhc1foG80tCe svg{font-family:\”trebuchet ms\”,verdana,arial,sans-serif;font-size:16px;}#mermaid-svg-rd6vQhc1foG80tCe p{margin:0;}#mermaid-svg-rd6vQhc1foG80tCe .label{font-family:\”trebuchet ms\”,verdana,arial,sans-serif;color:#333;}#mermaid-svg-rd6vQhc1foG80tCe .cluster-label text{fill:#333;}#mermaid-svg-rd6vQhc1foG80tCe .cluster-label span{color:#333;}#mermaid-svg-rd6vQhc1foG80tCe .cluster-label span p{background-color:transparent;}#mermaid-svg-rd6vQhc1foG80tCe .label text,#mermaid-svg-rd6vQhc1foG80tCe span{fill:#333;color:#333;}#mermaid-svg-rd6vQhc1foG80tCe .node rect,#mermaid-svg-rd6vQhc1foG80tCe .node circle,#mermaid-svg-rd6vQhc1foG80tCe .node ellipse,#mermaid-svg-rd6vQhc1foG80tCe .node polygon,#mermaid-svg-rd6vQhc1foG80tCe .node path{fill:#ECECFF;stroke:#9370DB;stroke-width:1px;}#mermaid-svg-rd6vQhc1foG80tCe .rough-node .label text,#mermaid-svg-rd6vQhc1foG80tCe .node .label text,#mermaid-svg-rd6vQhc1foG80tCe .image-shape .label,#mermaid-svg-rd6vQhc1foG80tCe .icon-shape .label{text-anchor:middle;}#mermaid-svg-rd6vQhc1foG80tCe .node .katex path{fill:#000;stroke:#000;stroke-width:1px;}#mermaid-svg-rd6vQhc1foG80tCe .rough-node .label,#mermaid-svg-rd6vQhc1foG80tCe .node .label,#mermaid-svg-rd6vQhc1foG80tCe .image-shape .label,#mermaid-svg-rd6vQhc1foG80tCe .icon-shape .label{text-align:center;}#mermaid-svg-rd6vQhc1foG80tCe .node.clickable{cursor:pointer;}#mermaid-svg-rd6vQhc1foG80tCe .root .anchor path{fill:#333333!important;stroke-width:0;stroke:#333333;}#mermaid-svg-rd6vQhc1foG80tCe .arrowheadPath{fill:#333333;}#mermaid-svg-rd6vQhc1foG80tCe .edgePath .path{stroke:#333333;stroke-width:2.0px;}#mermaid-svg-rd6vQhc1foG80tCe .flowchart-link{stroke:#333333;fill:none;}#mermaid-svg-rd6vQhc1foG80tCe .edgeLabel{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-rd6vQhc1foG80tCe .edgeLabel p{background-color:rgba(232,232,232, 0.8);}#mermaid-svg-rd6vQhc1foG80tCe .edgeLabel rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-rd6vQhc1foG80tCe .labelBkg{background-color:rgba(232, 232, 232, 0.5);}#mermaid-svg-rd6vQhc1foG80tCe .cluster rect{fill:#ffffde;stroke:#aaaa33;stroke-width:1px;}#mermaid-svg-rd6vQhc1foG80tCe .cluster text{fill:#333;}#mermaid-svg-rd6vQhc1foG80tCe .cluster span{color:#333;}#mermaid-svg-rd6vQhc1foG80tCe div.mermaidTooltip{position:absolute;text-align:center;max-width:200px;padding:2px;font-family:\”trebuchet ms\”,verdana,arial,sans-serif;font-size:12px;background:hsl(80, 100%, 96.2745098039%);border:1px solid #aaaa33;border-radius:2px;pointer-events:none;z-index:100;}#mermaid-svg-rd6vQhc1foG80tCe .flowchartTitleText{text-anchor:middle;font-size:18px;fill:#333;}#mermaid-svg-rd6vQhc1foG80tCe rect.text{fill:none;stroke-width:0;}#mermaid-svg-rd6vQhc1foG80tCe .icon-shape,#mermaid-svg-rd6vQhc1foG80tCe .image-shape{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-rd6vQhc1foG80tCe .icon-shape p,#mermaid-svg-rd6vQhc1foG80tCe .image-shape p{background-color:rgba(232,232,232, 0.8);padding:2px;}#mermaid-svg-rd6vQhc1foG80tCe .icon-shape .label rect,#mermaid-svg-rd6vQhc1foG80tCe .image-shape .label rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-rd6vQhc1foG80tCe .label-icon{display:inline-block;height:1em;overflow:visible;vertical-align:-0.125em;}#mermaid-svg-rd6vQhc1foG80tCe .node .label-icon path{fill:currentColor;stroke:revert;stroke-width:revert;}#mermaid-svg-rd6vQhc1foG80tCe :root{–mermaid-font-family:\”trebuchet ms\”,verdana,arial,sans-serif;}#mermaid-svg-rd6vQhc1foG80tCe .phys>*{fill:#dae8fc!important;stroke:#6c8ebf!important;color:#000!important;}#mermaid-svg-rd6vQhc1foG80tCe .phys span{fill:#dae8fc!important;stroke:#6c8ebf!important;color:#000!important;}#mermaid-svg-rd6vQhc1foG80tCe .phys tspan{fill:#000!important;}#mermaid-svg-rd6vQhc1foG80tCe .os>*{fill:#e1d5e7!important;stroke:#9673a6!important;color:#000!important;}#mermaid-svg-rd6vQhc1foG80tCe .os span{fill:#e1d5e7!important;stroke:#9673a6!important;color:#000!important;}#mermaid-svg-rd6vQhc1foG80tCe .os tspan{fill:#000!important;}#mermaid-svg-rd6vQhc1foG80tCe .virt>*{fill:#ffe6cc!important;stroke:#d79b00!important;color:#000!important;}#mermaid-svg-rd6vQhc1foG80tCe .virt span{fill:#ffe6cc!important;stroke:#d79b00!important;color:#000!important;}#mermaid-svg-rd6vQhc1foG80tCe .virt tspan{fill:#000!important;}#mermaid-svg-rd6vQhc1foG80tCe .cont>*{fill:#d5e8d4!important;stroke:#82b366!important;color:#000!important;}#mermaid-svg-rd6vQhc1foG80tCe .cont span{fill:#d5e8d4!important;stroke:#82b366!important;color:#000!important;}#mermaid-svg-rd6vQhc1foG80tCe .cont tspan{fill:#000!important;}#mermaid-svg-rd6vQhc1foG80tCe .cn>*{fill:#f8cecc!important;stroke:#b85450!important;color:#000!important;}#mermaid-svg-rd6vQhc1foG80tCe .cn span{fill:#f8cecc!important;stroke:#b85450!important;color:#000!important;}#mermaid-svg-rd6vQhc1foG80tCe .cn tspan{fill:#000!important;}

① 物理基础设施层（云的地基）

服务器: CPU / 内存 / 网卡 / BMC

存储: 磁盘 / RAID / LUN / DAS·NAS·SAN

网络: 交换机 / 路由器 / VLAN / 防火墙

② 操作系统层

Linux(CentOS/Ubuntu) / Windows Server

内核: 进程 / 内存 / 文件系统 / 设备管理

③ 虚拟化与云管理平台层（IaaS）

Hypervisor: KVM / ESXi / Xen / Hyper-V

管理: vCenter / libvirt / OpenStack

云平台特性: 热迁移 / HA / 快照 / 模板

④ 容器与编排层（CaaS）

容器: Docker / containerd

编排: Kubernetes (K8s)

镜像仓库: Harbor

⑤ 云原生应用与管理层（PaaS / 云原生）

微服务: Spring Cloud / Dubbo

服务网格: Istio / Linkerd

CI/CD: Jenkins / GitLab CI / ArgoCD

可观测性: Prometheus / Grafana / ELK / Jaeger

Serverless: 函数计算 / Lambda

⑥ 用户与应用层

业务系统 / 网页 / App / 钉钉 / SaaS 软件

各层职责与对应篇目

关键认知：下层是上层的"地基"，上层不必关心下层的具体实现——这叫"分层解耦"。 你在 K8s 里创建一个 Pod，不需要知道它最终落在哪个物理机、用了哪块磁盘、经过了哪台交换机，但这条链路客观存在。学习的过程，就是把这条"向下看不见的链路"逐层搞清楚。

六、★ 技术速查表：每个技术"在哪、干嘛、和谁同类"

这张表直接解决你的核心困惑。建议打印出来反复看。

1. 计算 / 虚拟化类

2. 存储类

3. 网络类

4. 容器 / 云原生类（第 4、5 篇详解）

七、学完本篇，你应该建立的 3 个核心认知

八、本系列阅读路线

#mermaid-svg-a7wydrftxFux4z2n{font-family:\”trebuchet ms\”,verdana,arial,sans-serif;font-size:16px;fill:#333;}@keyframes edge-animation-frame{from{stroke-dashoffset:0;}}@keyframes dash{to{stroke-dashoffset:0;}}#mermaid-svg-a7wydrftxFux4z2n .edge-animation-slow{stroke-dasharray:9,5!important;stroke-dashoffset:900;animation:dash 50s linear infinite;stroke-linecap:round;}#mermaid-svg-a7wydrftxFux4z2n .edge-animation-fast{stroke-dasharray:9,5!important;stroke-dashoffset:900;animation:dash 20s linear infinite;stroke-linecap:round;}#mermaid-svg-a7wydrftxFux4z2n .error-icon{fill:#552222;}#mermaid-svg-a7wydrftxFux4z2n .error-text{fill:#552222;stroke:#552222;}#mermaid-svg-a7wydrftxFux4z2n .edge-thickness-normal{stroke-width:1px;}#mermaid-svg-a7wydrftxFux4z2n .edge-thickness-thick{stroke-width:3.5px;}#mermaid-svg-a7wydrftxFux4z2n .edge-pattern-solid{stroke-dasharray:0;}#mermaid-svg-a7wydrftxFux4z2n .edge-thickness-invisible{stroke-width:0;fill:none;}#mermaid-svg-a7wydrftxFux4z2n .edge-pattern-dashed{stroke-dasharray:3;}#mermaid-svg-a7wydrftxFux4z2n .edge-pattern-dotted{stroke-dasharray:2;}#mermaid-svg-a7wydrftxFux4z2n .marker{fill:#333333;stroke:#333333;}#mermaid-svg-a7wydrftxFux4z2n .marker.cross{stroke:#333333;}#mermaid-svg-a7wydrftxFux4z2n svg{font-family:\”trebuchet ms\”,verdana,arial,sans-serif;font-size:16px;}#mermaid-svg-a7wydrftxFux4z2n p{margin:0;}#mermaid-svg-a7wydrftxFux4z2n .label{font-family:\”trebuchet ms\”,verdana,arial,sans-serif;color:#333;}#mermaid-svg-a7wydrftxFux4z2n .cluster-label text{fill:#333;}#mermaid-svg-a7wydrftxFux4z2n .cluster-label span{color:#333;}#mermaid-svg-a7wydrftxFux4z2n .cluster-label span p{background-color:transparent;}#mermaid-svg-a7wydrftxFux4z2n .label text,#mermaid-svg-a7wydrftxFux4z2n span{fill:#333;color:#333;}#mermaid-svg-a7wydrftxFux4z2n .node rect,#mermaid-svg-a7wydrftxFux4z2n .node circle,#mermaid-svg-a7wydrftxFux4z2n .node ellipse,#mermaid-svg-a7wydrftxFux4z2n .node polygon,#mermaid-svg-a7wydrftxFux4z2n .node path{fill:#ECECFF;stroke:#9370DB;stroke-width:1px;}#mermaid-svg-a7wydrftxFux4z2n .rough-node .label text,#mermaid-svg-a7wydrftxFux4z2n .node .label text,#mermaid-svg-a7wydrftxFux4z2n .image-shape .label,#mermaid-svg-a7wydrftxFux4z2n .icon-shape .label{text-anchor:middle;}#mermaid-svg-a7wydrftxFux4z2n .node .katex path{fill:#000;stroke:#000;stroke-width:1px;}#mermaid-svg-a7wydrftxFux4z2n .rough-node .label,#mermaid-svg-a7wydrftxFux4z2n .node .label,#mermaid-svg-a7wydrftxFux4z2n .image-shape .label,#mermaid-svg-a7wydrftxFux4z2n .icon-shape .label{text-align:center;}#mermaid-svg-a7wydrftxFux4z2n .node.clickable{cursor:pointer;}#mermaid-svg-a7wydrftxFux4z2n .root .anchor path{fill:#333333!important;stroke-width:0;stroke:#333333;}#mermaid-svg-a7wydrftxFux4z2n .arrowheadPath{fill:#333333;}#mermaid-svg-a7wydrftxFux4z2n .edgePath .path{stroke:#333333;stroke-width:2.0px;}#mermaid-svg-a7wydrftxFux4z2n .flowchart-link{stroke:#333333;fill:none;}#mermaid-svg-a7wydrftxFux4z2n .edgeLabel{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-a7wydrftxFux4z2n .edgeLabel p{background-color:rgba(232,232,232, 0.8);}#mermaid-svg-a7wydrftxFux4z2n .edgeLabel rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-a7wydrftxFux4z2n .labelBkg{background-color:rgba(232, 232, 232, 0.5);}#mermaid-svg-a7wydrftxFux4z2n .cluster rect{fill:#ffffde;stroke:#aaaa33;stroke-width:1px;}#mermaid-svg-a7wydrftxFux4z2n .cluster text{fill:#333;}#mermaid-svg-a7wydrftxFux4z2n .cluster span{color:#333;}#mermaid-svg-a7wydrftxFux4z2n div.mermaidTooltip{position:absolute;text-align:center;max-width:200px;padding:2px;font-family:\”trebuchet ms\”,verdana,arial,sans-serif;font-size:12px;background:hsl(80, 100%, 96.2745098039%);border:1px solid #aaaa33;border-radius:2px;pointer-events:none;z-index:100;}#mermaid-svg-a7wydrftxFux4z2n .flowchartTitleText{text-anchor:middle;font-size:18px;fill:#333;}#mermaid-svg-a7wydrftxFux4z2n rect.text{fill:none;stroke-width:0;}#mermaid-svg-a7wydrftxFux4z2n .icon-shape,#mermaid-svg-a7wydrftxFux4z2n .image-shape{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-a7wydrftxFux4z2n .icon-shape p,#mermaid-svg-a7wydrftxFux4z2n .image-shape p{background-color:rgba(232,232,232, 0.8);padding:2px;}#mermaid-svg-a7wydrftxFux4z2n .icon-shape .label rect,#mermaid-svg-a7wydrftxFux4z2n .image-shape .label rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-a7wydrftxFux4z2n .label-icon{display:inline-block;height:1em;overflow:visible;vertical-align:-0.125em;}#mermaid-svg-a7wydrftxFux4z2n .node .label-icon path{fill:currentColor;stroke:revert;stroke-width:revert;}#mermaid-svg-a7wydrftxFux4z2n :root{–mermaid-font-family:\”trebuchet ms\”,verdana,arial,sans-serif;}

第1篇 全景图（建立全局观·你在这里）

第2篇 云的地基服务器·存储·网络

第3篇 操作系统与虚拟化KVM/ESXi/OpenStack/热迁移

第4篇 容器与K8sDocker/容器编排（云原生核心）

第5篇 云原生生态微服务/DevOps/可观测/Serverless

下一篇：我们从最底层的"地基"讲起——为什么云计算要先懂服务器、存储、网络？ 你会搞清楚 RAID 0/1/5/6/10 到底怎么选、DAS/NAS/SAN 的本质区别、LUN 是什么、VLAN 为什么能隔离、iSCSI 和 NFS 分别在什么场景下用。