This is ansible host file for my blog https://medium.com/appgambit/configure-jenkins-with-ansible-7bfaa387fb1c

Playbook-jenkins.yml

---
- name: Demo for SampleApp-Server
  hosts:
    - SampleApp-Server
  gather_facts: true
  become: yes
  become_method: sudo
  tags: [jenkins]

  tasks:
    - name: Update the software package repository
      yum:
        name: "*"
        update_cache: yes
    - name: Install dependencies
      package:
        name: "{{ item }}"
        state: present
      with_items:
        - java-1.8.0-openjdk
        - git
        - texlive-latex
        - wget
        - deltarpm
    - name: Download jenkins repo
      command: wget -O /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat-stable/jenkins.repo
    - name: Import Jenkins CI key
      rpm_key:
        key: https://pkg.jenkins.io/redhat-stable/jenkins.io.key
        state: present
    - name: Install Jenkins
      yum:
        name: "jenkins"
        state: present
    - name: Allow port 8080
      shell: iptables -I INPUT -p tcp --dport 8080 -m state --state NEW,ESTABLISHED -j ACCEPT
    - name: Start the server
      service:
        name: jenkins
        state: started
    - wait_for:
        port: 8080
        command: cat /var/lib/jenkins/secrets/initialAdminPassword
    - name: Get Admin Password
      become: yes
      become_method: sudo
      command: cat /var/lib/jenkins/secrets/initialAdminPassword