Downloading and Configuring Tomcat:

1. Download Tomcat:

   Search for the latest version of Tomcat on Google and obtain the download link. For example, you can find the link at https://dlcdn.apache.org/tomcat/tomcat-10/v10.1.19/bin/apache-tomcat-10.1.19.tar.gz.

2. Navigate to Opt Directory:

    sudo su -
    cd /opt
   

3. Download and Extract Tomcat:

    wget https://dlcdn.apache.org/tomcat/tomcat-10/v10.1.19/bin/apache-tomcat-10.1.19.tar.gz
    tar -xvzf apache-tomcat-10.1.19.tar.gz
   

4. Rename Tomcat Directory:

    mv apache-tomcat-10.1.19 tomcat
   

5. Start Tomcat Server:

    cd /opt/tomcat/bin
    ./startup.sh
   

6. Access Tomcat Manager:

   Open a web browser and navigate to public_ip:8080. Ensure that port 8080 is open in the security group of your instance.

7. Update Context Configuration:

   After receiving a 403 error when accessing the manager app, update the context.xml files:

    find / -name context.xml
    vi /opt/tomcat/webapps/host-manager/META-INF/context.xml
    vi /opt/tomcat/webapps/manager/META-INF/context.xml
   

   Comment out the lines containing <Valve class ...> by adding <!-- at the beginning and --> at the end.

8. Configure Users for Manager App:

    cd /opt/tomcat/conf/
    vi tomcat-users.xml
   

   Add the following users:

    <role rolename="manager-gui"/>
    <role rolename="manager-script"/>
    <role rolename="manager-jmx"/>
    <role rolename="manager-status"/>
    <user username="admin" password="admin@4253" roles="manager-gui, manager-script, manager-jmx, manager-status"/>
    <user username="deployer" password="deployer" roles="manager-script"/>
    <user username="tomcat" password="s3cret" roles="manager-gui"/>
   

9. Restart Tomcat:

   Create symbolic links for startup and shutdown scripts:

    ln -s /opt/tomcat/bin/startup.sh /usr/local/bin/tomcatup
    ln -s /opt/tomcat/bin/shutdown.sh /usr/local/bin/tomcatdown
   

   You can now start and stop Tomcat using tomcatup and tomcatdown.

Integrating Tomcat with Jenkins:

1. Install "Deploy to container" Plugin:

   • Log in to Jenkins UI.

   • Navigate to Manage Jenkins > Manage Plugins > Available.

   • Search for "Deploy to container" and install it without restarting.

2. Add Credentials:

   • Go to Credentials > System > Global credentials (unrestricted) > Add credentials.

   • Choose Username with password.

   • Enter the following details:

     • Username: deployer

     • Password: (Provide the password)

     • ID: tomcat_deployer

     • Description: Use this credentials to deploy artifacts on Tomcat server

3. Create Jenkins Job:

   • Name: DemoDeployOnTomcat

   • Select Maven Project.

   • SCM: Git (Add your repository URL)

     

   • Build:

     • Root POM: pom.xml

     • Goals and options: clean install

• Post Build Actions:

  • Deploy war/ear to container

    • WAR/EAR files: **/*.war (Artifact built by Maven)

    • Containers: Tomcat 9.x Remote

      • Credentials: Choose the credentials added earlier

      • Tomcat URL: http://public_ip:8080

4. Build Jenkins Job:

   Trigger the Jenkins job to build the project.

5. Verify Deployment:

   • Go to the Tomcat server's manager app.

   • Navigate to "List apps" and verify the deployed web application.

     

     

     

Following these steps will ensure the smooth setup and integration of Tomcat with Jenkins, allowing for efficient deployment of artifacts.