Integrate Jenkins with github and Automatically kick off Jenkins when new build is pushed to git hub

Integrate Jenkins with github and 
Automatically kick off Jenkins when new build is pushed to git hub:

Get web hook url from Jenkins.

Go to Jenkins

Click manage Jenkins

Click Configure system

Go to GitHub Plugin Configuration

Click Advanced

Check specify another hook url for github configuration

Copy the hook url and uncheck the check box

Go to github repository

Go to settings

Click Webhooks and services

In webhook section, click Add webhook

Paste the url to the Payload URL

Now, select Which events would you like to trigger this webhook?

Everything or every push or select other events from the options such as Dev team push then kick off the execution.

You can also select content type

You can leave the active checked

Click Add webhook

Now, go to Jenkins

Click a jenkin job

Click configure

In build triggers section, check Build when a change is pushed to Github

Click Save

Push to Github

Cmd prompt

Git status --- to know the status

Git commit –am “comment”

Git push

Execution starts in Jenkins

Integrate Jenkins with github:

Go to Jenkins

Click manage Jenkins

Manage plugins

Click tab available

Search github

Check github integration plugin

Click download now and install after restart

This download the plugin, download other dependencies as well

Check restart Jenkins when installation is complete

Now go to git hub

Go to your repository and copy the URL

Create job in Jenkins:

Click new item

Give job name

Select freestyle project. You can select pipeline also

Click ok

In general tab , check github project

Paste the URL  of the project copied above

Scroll down, In source code management section check the radio button GIT

You have to paste another URL to Repository URL, this you got from github-clone or download button

Mention the branch in which you want to build. Default is master

Scroll down to build triggers

Check which trigger is suitable for your purpose. I am selecting GitHub hook trigger for GitScm polling

There are other options as well if you need.

Click save

Jenkins: Create job, schedule job, send email notification

Configure Email-Jenkinds Notification:
Click Manage Jenkins
Click Configure Systems
Go to Email Notification section
Give the SMTP server name for example, for gmail: it is smtp.gmail.com
Check the box "Use SMTP Authentication"
Click Advanced - give username and password. username will be the email from which the email will be sent.
check "Use SSL". Make sure if you need to check this box or not depending upon your email.
Give the SMTP port
Give the email address at Reply-To Address
Give charset as UTF-8
Test the email configuration by checking - test config by sending test email. You give the receipent email address here.
click Apply and Save
Incase you get trouble getting email from jenkins , then open your email, go to my account, go to signing into google(for gmail), Turn on the Allow less secure app

Send Email:
Go to any jobs
Go to configure
Click Add post build action
Click Email Notification
add receipient email -- this will email to this address if email fails
Click Apply and Save
Now to run, click Build Now
To change the command, click the job and click configure
When the test case fails and you get email, you can click the link in the email which will take you to the jenkins site where you can click console output to see the log.
You can add plugins to send email notification in Json and XML format


Craete new job:
Click New item
Give name, check radio Freestyle project and click OK
Click drop down Add Build Step and click Execute Windows batch command
inside Build type below command:
java -version: This will give java version , simple code for the example purpose. This is cmd command or .bat command.

Schedule jobs:
Open the job
Click Configure
in Build Triggers section, click Build Periodically
For the scheduling commands(called cron pattern) , click help and get from there. There are examples also in the help.
Online resource: wikipedia has good explanation of the cron pattern.
To run at 7pm and 15 min: 15 19 * * *, 8 pm : H 20 * * *
after you write the cron pattern, click Apply and Save
And the execution starts.