November 2019
Beginner to intermediate
406 pages
9h 21m
Chinese
Content preview from Java持续交付
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部署应用程序
｜
209
4.
如果
Dockerfile
不在代码库的根目录下，则需要指定该文件所在的目录，如图
10-5
所示。
图10-5：指定Dockerfile所在的目录
这样，构建管道就可以自动为应用程序创建
Docker
镜像，并且随时可以部署到你的平
台上。
部署机制
我们首先要弄清楚服务进入生产环境的机制，换句话说，就是如何告诉平台，让它知道
有一个新的可用版本。一旦你明白了这一点，就可以让
CD
管道自动来执行该操作。
目前的大多数平台，包括
Kubernetes
、
Amazon
和
Cloud Foundry
，都提供了
RESTful
API
作为管理部署的主要方式。但是，大多数人不经常使用
API
，因此他们还提供了基
于
API
的如下工具，以便让交互变得更加容易。
图形界面
通常以网站的形式提供部署操作和管理功能。这有助于你熟悉新平台的工作方式，
或者快速检查平台的状态，但不适合自动化部署。
命令行界面
通常以
Bash
命令行的形式提供，相当于对
RESTful API
的封装。
CLI
的优点是可以
轻松地编写命令行脚本，适合自动化构建。
除此之外，一些平台服务商和第三方利用现有的
RESTful API
或者
CLI
，为不同的自动
化构建工具开发插件，以管道的方式来满足常见需求。
插件示例 ：
Kubernetes
如第
4
章所述，
Kubernetes
是一个编排平台，用来部署封装在容器中的不可变服务。在
第
8
章中，我们介绍过如何在本地使用
Docker
和
Kubernetes
来模拟生产环境。现在我
们将介绍如何使用
Jenkins
的插件，自动将镜像部署到生产环境的 ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.