Jenkins and Tomcat setup

1. Jenkins :used for Continuous  Integration  and continuous delivery
Help video playlist for jenkins and Tomcat :
https://www.youtube.com/watch?v=Fi9pgrMlQZY&list=PLhW3qG5bs-L_ZCOA4zNPSoGbnVQ-rp_dG&index=2


2. ******************* Jenkins installation *******************************
3. Download Jenkins war file from - https://jenkins.io/
4. Place the war file at E:\Jenkins
5. Go to windows command prompt  where jenkins.war is placed  and run -
E:\Jenkins\ java -jar jenkins.war
OR
6. E:\Jenkins\ java -jar jenkins.war --httpPort=9090  ( To start jenkins (standalone) on a diff port )
7. Capture the password , or get it from E:\Jenkins\secrets\initialAdminPassword
8. Do not save the password if asked by browser
9. Go to browser - http://localhost:8080 (Jenkins window should show up)
10. Select plugins to install ---> Click suggested and click install
11. Get started with Jenkins
username : admin
password  : admin123  ( password is captured at step  7 above)
12. From C:\Users\<logged inuser>\.jenkins   move all stuff to E:\Jenkins\JenkinsHome


13. ******************* Tomcat installation *******************************
14. Download Tomcat and unzip it and place in E:\Tomcat folder
15. Copy/Place the jenkins.war file inside E:\Tomcat\webapps    folder
16. Step 4 :  Set Environment Variables
System Variable:
JENKINS_HOME = E:\Jenkins\JenkinsHome
CATALINA_HOME = E:\Selenium\Tomcat
JAVA_HOME = E:\Selenium\Java\jdk131
JRE_HOME      = C:\Program Files\Java\jre-10.0.2   ( without semicolumn)
CLASSPATH     = E:\Selenium\Tomcat\lib;
PATH          = %PATH%; %JAVA_HOME%\bin;%CATALINA_HOME%\bin;%CLASSPATH%\servlet-api.jar;


17. verify if  Jenkins is running on tomcat : http://localhost:8080/jenkins
To start Tomcat  run      E:\Tomcat\bin\startup.sh
To shutdown tomcat     E:\Tomcat\bin\shutdown.sh
18. Verify if  Tomcat started http://localhost:8080
19. To restart running  Jenkins  http://localhost:8080/jenkins/restart
20. To Start and Stop Tomcat from command prompt :
To start --> E:\Tomcat\bin\startup 
To Stop  -->E:\Tomcat\bin\ shutdown
21. To see all commands list for CLI  http://localhost:8080/jenkins/cli/ 
21. How to change default port 8080 : Go to E:\Tomcat\conf  >> Edit server.xml >> Search "Connector port" >>Replace "8080" by your port number >>Restart tomcat server.




Common Plugins:

• Role-based Authorization Strategy
• Deploy to container Plugin
• Credentials Plugin 
• Email Extension Plugin
• Build pipeline
• Delivery Pipeline Plugin
• Blue ocean
• poll mailbox trigger plugin
• Build Monitor view

status notifier  tool for Jenkins : CatLight.io

+++++++++++++++  Automatic Deployment Steps  +++++++++++++++++++++++

https://youtu.be/j5D8SLxn6YA?list=PLhW3qG5bs-L_ZCOA4zNPSoGbnVQ-rp_dG

Add Post build actions: Deploy war/ear to container

war/EAR files : **/*.war

context path : sample  ==> without .war extension

containers : Add Container (eg Tomcat9)

Manager user name : deployer

Manager password  : deployer 

Tomcat URL   : http://localhost:8080/jenkins/

e:\Tomcat Folder >> conf >>  tomcat-user.xml

 >> add below line at matching place 

<user username="deployer" password="deployer" roles="role1"/>