Understanding Jenkins Pipeline as Code: Benefits and Usage

Jenkins is the most widely used open‑source continuous integration server in enterprises; today we explore pipeline as code.

Remember to bookmark; you will definitely use it later.

First, let's understand that before pipelines we used a large number of freestyle‑type jobs. These jobs have the characteristic that all configurations are done on the web UI, which creates a problem.

When we need to modify these parameters in bulk, we have to repeatedly edit each job's configuration in the console.

After Jenkins 2.0, a core feature called pipeline was introduced. We can describe the entire pipeline process as code, store the code in version control, and write such code directly in our project. This solves configuration duplication issues and brings many benefits.

The benefit is that when we have multiple projects, we can manage them with a unified pipeline code. Adding new pipeline steps later just means adding code.

Finally, let's look at the format of pipeline code. This is the pipeline we will write later.

Let's summarize the core points we shared today:

Freestyle projects have the problem that all configurations are on the UI, making modifications inconvenient.

Pipeline‑type projects describe the pipeline as code, so bulk modifications only require changing the source code, which is very convenient for operations.

Finally, we pose a question: if you have multiple Jenkinsfiles, each with thousands of lines, management becomes difficult. What practice should we use to solve this?

We will share this in the next episode; thank you for watching, and if this helped you, please like and share!