Lab Information
The Nautilus DevOps team has recently setup a Jenkins server, which they want to use for some CI/CD jobs. Before that they want to install some plugins which will be used in most of the jobs. Please find below more details about the task
Click on the Jenkins button on the top bar to access the Jenkins UI. Login using username admin and password Adm!n321.
Once logged in, install the Git and GitLab plugins. You may need to restart Jenkins to complete the plugin installation; if required, opt to Restart Jenkins when installation is complete and no jobs are running on the plugin installation/update page (Update Centre).
Note:
After restarting Jenkins, wait for the login page to reappear before proceeding.
For tasks involving web UI changes, capture screenshots to share for review or consider using screen recording software like loom.com for documentation and sharing.
Lab Solutions
🧠Part 1: Lab Step-by-Step Guidelines
Step 1: Open Jenkins UI
Click the Jenkins button from the lab top bar.
Login using:
Field Value
Username admin
Password Adm!n321
Step 2: Open Plugin Manager
From the Jenkins dashboard:
Manage Jenkins
Then click:
Plugins
Step 3: Install Git Plugin
Go to:
Available plugins
Search for:
Git
Check the box for:
Git
Step 4: Install GitLab Plugin
In the search box type:
GitLab
Check the box for:
GitLab
Step 5: Install Selected Plugins
Click:
Install
or
Install without restart
Step 6: Restart Jenkins (If Prompted)
If Jenkins displays:
Restart Jenkins when installation is complete and no jobs are running
Enable/check that option.
Wait until Jenkins restarts completely.
Step 7: Verify Jenkins Is Back Online
Wait for the login page to reappear.
Login again using:
Username Password
admin Adm!n321
Step 8: Verify Plugins Installed
Go to:
Manage Jenkins → Plugins → Installed plugins
Verify both plugins appear:
Git
GitLab
🧠Part 2: Simple Step-by-Step Explanation (Beginner Friendly)
What Are Jenkins Plugins?
Plugins add extra features to Jenkins.
Without plugins, Jenkins only has basic functionality.
Why Install the Git Plugin?
The Git plugin allows Jenkins to:
Clone repositories
Pull source code
Trigger builds from Git commits
This is essential for CI/CD pipelines.
Why Install the GitLab Plugin?
The GitLab plugin connects Jenkins with GitLab.
It helps Jenkins:
Receive webhooks
Trigger jobs automatically
Integrate merge requests and pipelines
Why Jenkins Sometimes Restarts
Some plugins modify Jenkins core components.
A restart ensures:
New plugins load correctly
Jenkins recognizes new functionality
Why Verify Installed Plugins
Checking Installed Plugins confirms:
Installation succeeded
Jenkins loaded the plugins correctly
CI/CD jobs can use them later
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