simple-devops-project-2

Simple DevOps Project 2

In this project we are creating Jenkins CI CD of git > github > jenkins > maven to build and send .war file > to ansible server and deploy .war file with playbook > to tomcat 8 server.

Prerequisites

• Ansible server
• Jenkins with Maven Server
• Tomcat Server
• Install Publish Over SSH plugin
• Enable connection between Ansible and Jenkins

Install "Publish Over SSH"

Login to Jenkins Dashboard >> Manage Jenkins > Manage Plugins > Available > Publish over SSH

Enable connection between Ansible and Jenkins

Login to Jenkins Dashboard >> Manage Jenkins > Configure System > Publish Over SSH > SSH Servers

• SSH Servers:
  • Name : ansible_server
  • Hostname:<ServerIP>
  • username: ansadm
  • password: *******

Test the connection by clicking Test Connection and save

Create Playbooks

• Create dicrectory playbooks on /opt

  mkdir /opt/playbooks

• Create a copywarfile.yml playbook file under /opt/playbooks directory on Ansible server

  # copywarfile.yml
  ---
  - hosts: all
    become: true
    tasks:
      - name: copy jar/war onto tomcat servers
          copy:
            src: /opt/playbooks/wabapp/target/webapp.war
            dest: /usr/tomcat8/webapps

Create SSH key and copy to Tomcat server

• Login to tomcat user and create ansadm user, set password and add to sudo

sudo useradd ansadm
sudo passwd ansadm
sudo echo "ansadm ALL=(ALL:ALL) NOPASSWD: ALL" >> /etc/sudoers

• Now login to Ansible server generate SSH key and copy to tomcat server

ssh-keygen
ssh-copy-id ansadm@<docker-host-IP>

Add tomcat server details to /etc/ansible/hosts (if you are using other hosts file update server info there)

echo "<tomcat-server_IP>" >> /etc/ansible/hosts

Jenkins CI CD new item Setup

Create Jenkins job, Fill the following details,

Login to Jenksing Dashboard > click New Item

• Enter item name: sample devops project 1
• Source Code Management: - Repository: https://github.com/maheshkn400/hello-world.git - Branches to build : */master
• Build:
  • Root POM:pom.xml
  • Goals and options : clean install package
• Add post-build steps
  • Send files or execute commands over SSH
    • SSH Server : ansible_server
    • Source fiels: webapp/target/*.war
    • Remote directory: //opt//playbooks
• Add post-build steps
  • Send files or execute commands over ssH
    • SSH Server : ansible_server
    • Exec command: ansible-playbook /opt/playbooks/copywarfile.yml

Run the job and you should be able to seen build has been deployed on Tomcat server.

I'm Happy To Get Suggestions 😄