Jenkins Tutorial

1. JENKINS TUTORIAL
Mamun @mamunr7

2. What is Jenkins

3. The Big IDEA
Get something done automatically (hands-free) that involves:
Multiple Steps
Steps have dependencies
May have to execute multiple things on multiple servers

4. One Example of What You Can do with Jenkins
 At 3:21 on Sunday
 Get token from Vault using predefined authentication
variables (inserted by OPS)
 Login to Google Cloud using that token
 Copy 2TB of data from HDFS
 Process that data using a Python program
 Copy output to Google Dataflow
 If it fails or takes more than 60 minutes, page on-call using
Pagerduty plugin
 If it succeeds, send our team an email.
 Delete the token, because security does not allow tokens
to live outside Vault.
 Keep detailed logs for 30 last runs.
 Keep other metadata like run-times, also.

5. Another Example
 Grab new version of code from git repo
 Integrate it with maven or some other tool
 Deploy it to 500 servers
 Do some automated testing
 Decided if this new version is good or not
 If automated testing fails, roll the whole thing
back and page on-call

6. There are Other Comparable Tools

7. You Can Use Jenkins on AWS
(if you don’t fee like managing your own)

8. Installation
Java
Jenkins
Done 

9. Jenkins Architecture
 You can have many slaves
 Each slave can have labels
 Nothing except java is needed on
slaves
 Just a jar file that the master pushes
during agent installation

10. Login to Jenkins via your Favorite Browser

11. First Page You See (Your Mileage May Vary)

12. Manage Jenkins Screen

13. Build a New Job (Project)

14. Build a New Job (2)

15. Build a New Job (3)

16. Users

17. Roles

18. BUILD HISTORY

19. Job Status Summary of Each Recurring Job

20. Global Tool Configuration

21. How Many Plugins are There?

22. Plugins Management

23. Views

24. Doing simple things like execute a script on a server

25. Install a Slave Agent on a New VM

26. Sometimes This Happens After a Slave Reboot

27. Job Console Output

28. Each Job has its own space

29. Jenkins and Selenium Testing Tool (software) Work well together

30. Example of How Jenkins Enables CICD Pipelines

31. Multi-step Python Code Job on Jenkins

32. Kick off a Build Right Now