CONFIGURATION TASKS WITH ANSIBLE PLAYBOOK

Ensure you have Ansible installed on your control machine. You can install Ansible using the following command:

sudo apt update
sudo apt install ansible
ansible –version

Save your key.pem on ubuntu server

vi key.pem

chmod 600 key.pem

Pwd

For MacUsers Only (Copy Key.pem to Ec2)

scp -i ~/Desktop/20.pem ~/Desktop/20.pem ubuntu@52.207.218.240:/tmp/

ssh -i ~/Desktop/20.pem ubuntu@52.207.218.240

sudo mv /tmp/20.pem /home/ubuntu/

sudo chown ubuntu:ubuntu /home/ubuntu/20.pem 

Create Your Inventory File

Create an inventory file vi host.ini that lists your EC2 instances. For example:

[ec2_instances]
ec2_instance ansible_host=3.15.0.203 ansible_user=ubuntu ansible_ssh_private_key_file=/home/ubuntu/key.pem

Create Your Playbook
Create a playbook file (install_git_java.yml) with the following content:

---
- name: Install Git and Java on EC2 Instances
  hosts: ec2_instances
  become: yes

  tasks:
    - name: Update and upgrade apt packages
      apt:
        update_cache: yes
        upgrade: dist

    - name: Install Git
      apt:
        name: git
        state: present

    - name: Install Java
      apt:
        name: openjdk-11-jdk
        state: present

This playbook does the following:

1. Updates the apt package cache and upgrades all packages.
2. Installs Git.
3. Installs Java (OpenJDK 11).

 Run the Playbook

Run the playbook using the following command:

ansible-playbook -i host.ini install_git_java.yml

Playbook to Install Jenkins

---
- name: Install Jenkins on EC2 Instances
  hosts: ec2_instances
  become: yes

  tasks:
    - name: Update apt package index
      apt:
        update_cache: yes

    - name: Install Java (Jenkins dependency)
      apt:
        name: openjdk-11-jdk
        state: present

    - name: Install required packages
      apt:
        name: 
          - gnupg
          - software-properties-common
        state: present

    - name: Add Jenkins repository key to the system
      apt_key:
        url: https://pkg.jenkins.io/debian/jenkins.io.key
        state: present

    - name: Add Jenkins repository to the sources list
      apt_repository:
        repo: deb http://pkg.jenkins.io/debian-stable binary/
        state: present

    - name: Update apt package index (again)
      apt:
        update_cache: yes

    - name: Install Jenkins
      apt:
        name: jenkins
        state: present

    - name: Ensure Jenkins is started and enabled on boot
      systemd:
        name: jenkins
        enabled: yes
        state: started

Playbook for Installing Docker

---
- name: Install Docker
  hosts: servers
  become: yes

  tasks:
    - name: Update the apt package index
      apt:
        update_cache: yes

    - name: Install Docker
      apt:
        name: 
          - apt-transport-https
          - ca-certificates
          - curl
          - software-properties-common
        state: present

    - name: Add Docker GPG key
      apt_key:
        url: https://download.docker.com/linux/ubuntu/gpg
        state: present

    - name: Add Docker repository
      apt_repository:
        repo: deb https://download.docker.com/linux/ubuntu focal stable
        state: present

    - name: Update the apt package index again
      apt:
        update_cache: yes

    - name: Install Docker CE
      apt:
        name: docker-ce
        state: present