Jenkins Delivery Pipeline

 ​​ ​​ ​​ ​​​​ Devops Tutorial 22 -​​ Jenkins​​ Delivery​​ Pipeline

What you will Learn:

  • Stages in Continuous delivery and deployment

  • Continuous Integration

  • What is a Pipeline

  • Install ‘Managed Scripts’ plugin

  • Add path of shell executable

  • Setup​​ Delivery​​ pipeline​​ (create jobs)

  • Setup Delivery pipeline (chain jobs)

  • Setup Delivery pipeline (install​​ ‘Delivery pipeline’​​ plugin)

Stages in Continuous delivery and deployment​​ 

  • Stage 1:​​ We start with creating or​​ building​​ a​​ software​​ product

  • Stage 2: We then​​ deploy​​ it to test environment

  • Stage 3: We then​​ test​​ it

  • Stage 4: We finally​​ release​​ it to production environment​​ 

Now, all the stages have Jenkins jobs associated with them.​​ 

Continuous Integration

All the above​​ jobs​​ that we talked about​​ are chained​​ or integrated​​ together.​​ What this means is that, once the ‘Build’ jobs are executed successfully, the ‘Deploy’ jobs are triggered. The successful ‘Deploy’ jobs trigger ‘Test’ jobs and so on.​​ 

So all jobs are chained in a continuous integration fashion

​​ 

What is a Pipeline

Pipeline is​​ simply​​ a group of jobs that are chained with each other

The above pipeline can also be referred to as continuous delivery pipeline​​ since all jobs are integrated together.

Install ‘Managed Scripts’ plugin

Manage jenkins > Manage Plugins > Install ‘Managed Scripts’ plugin​​ 

Add path of shell executable

Manage jenkins > Configure System > Add path of shell executable

You can find out the path by running the ‘where sh’ command in Git bash window

Setup​​ Delivery​​ pipeline in Jenkins​​ (create jobs)

Start Jenkins and login​​ 



Let us create 3 simple freestyle jobs. We will chain them later

Select ‘Execute shell’ from the ‘Add build step’ dropdown, see below

​​ Enter​​ an echo statement, see below

Apply and save

Similarly create ‘DeployJob’​​ 

Similarly create ‘TestJob’​​ 

So we have created 3 jobs

Important note: Make sure that the 3 jobs are running fine​​ individually

Setup Delivery pipeline in Jenkins (chain jobs)

We will now chain the 3 jobs that we have created. To do that, let us configure DeployJob first

Select ‘Build after other projects are built’ checkbox

Enter ‘BuildJob’ in the text field. So what this means is that, ‘DeployJob’ will get executed only if ‘BuildJob’ is success

Apply and Save

Similarly configure ‘TestJob’

Apply and Save

So we have chained the 3 jobs.​​ 

To validate this, execute ‘BuildJob’​​ 

Notice below that DeployJob gets executed automatically after BuildJob is success​​ 

Notice below that TestJob gets executed automatically after DeployJob is success

Setup Delivery pipeline in Jenkins (‘Delivery pipeline’ plugin)

Install ‘Delivery pipeline’ plugin

Important note:​​ Restart jenkins after installing plugin

In the next article, we will continue and see how to add a delivery pipeline view.

Thank you for reading!

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