Jenkins 2.0新时代:从CI到CD - DockOne.io



Jenkins 2.0新时代:从CI到CD - DockOne.io

自从去年9月底Jenkins的创始人Kohsuke Kawaguchi提出Jenkins 2.0(后称2.0)的愿景草案之后,整个Jenkins社区为之欢欣鼓舞,不管是官方博客还是Google论坛,大家都在热烈讨论和期盼2.0的到来。4月20日,历经Alpha(2/29)、Beta(3/24)、RC(4/7)3个版本的迭代,2.0终于正式发布。这也是Jenkins面世11年以来(算上前身Hudson)的首次大版本升级。那么,这次升级具体包含了哪些内容呢?

外部

从外部来看,2.0最大的三个卖点分别是Pipeline as Code,全新的开箱体验和1.x兼容性。

Pipeline as Code是2.0的精髓所在,是帮助Jenkins实现CI(Continuous Integration)到CD(Continuous Delivery)华丽转身的关键推手。所谓Pipeline,简单来说,就是一套运行于Jenkins上的工作流框架,将原本独立运行于单个或者多个节点的任务连接起来,实现单个任务难以完成的复杂发布流程(例如下图)。Pipeline的实现方式是一套Groovy DSL(类似Gradle),任何发布流程都可以表述为一段Groovy脚本,并且Jenkins支持从代码库直接读取脚本,从而实现了Pipeline as Code的理念。

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