WizardBrew Guide – Linux Cheat Sheet

🛠️ Ansible Deployment Setup

Project: Ansible Deployment Date: 17/04/2025 Engineer: Parvez M B Email: parvez@gal**intelli****.com

📦 Step 1: Set Up the Virtual Machine

Create a VM on GCP or AWS
OS: Ubuntu Server

apt update && apt upgrade -y 

                    apt install docker.io -y

🐳 Step 2: Create Docker Containers


                --== Process ==-- 
                Ansible-master 
                    Target1:
                    Target2:


            --== Commands below ==-- 
            docker run -it -d --name ansible-master ubuntu /bin/bash 

            docker run -it -d --name target1 ubuntu /bin/bash

            docker run -it -d --name target2 ubuntu /bin/bash
            docker ps

📦 Step 3: Configure Ansible-Master Container

  --== Process ==-- 
                    Login to the container: 
                    Install required packages:
                    Install Software Properties Common:
                    Add Ansible Repository and Install Ansible:
                    Install Ansible:
                    Check Version to verify Ansible:

 --== Commands below ==-- 
            docker exec -it ansible-master bash
                apt update

                apt install python-is-python3 vim iputils-ping openssh-client -y 

                apt install software-properties-common

                add-apt-repository --yes --update ppa:ansible/ansible

                apt install ansible

                ansible --version

🎯 Step 4: Configure Target Machines

Target1 Setup


                            --== Process ==-- 
                            Login target1 container 
                                update the packages
                                Install required packages like vim python3  & ping
                                Install OpenSSH server and Client for interation.


            --== Commands below ==-- 
            docker exec -it target1 bash 

            apt update 

            apt install vim python-is-python3 iputils-ping 

            apt-get install openssh-client openssh-server -y

Note: YOu can either install pyton3 or the minimal and point it to pyton3 using python-is-python3

🔗 SSH Configuration


                        --== Process ==-- 
                        Go to the directory of SSH 
                        Open sshd_congig file for changes
                        Change the permission and allow Root Login 'Yes'
                        Allow the Password Auth set it to 'Yes'
                        Set the root password of the target machine


                
                    --== Command below ==-- 
                    cd /etc/ssh 

                            vi sshd_config

                            PermitRootLogin yes 

                            PasswordAuthentication yes 

                            service ssh start
                            passwd root

🌐 Step 5: Network & Host Setup


            --== Process ==-- 
            Find ip of docker or container # Get IP (e.g., 172.17.0.3)
            Go back to the Master node and configure details
             Go into ansible folder to configure in master 
            edit the host file in Inventory aff target ip to host file


            --== Commands below ==-- 
            docker inspect target1  

            docker exec -it ansible-master bash 

            cd /etc/ansible 

            vi hosts
            # Add:
            172.17.0.3

Note: you can either use cmd to find ip
             hostname -i |
            docker inspect target1 |
            docker inspect -f '{{ .NetworkSettings.IPAddress }}' ContainerID

🔐 Step 6: SSH Key Setup

             Create Keygen and transfer the ssh key using ssh-copy-id user@ip  to target machine. so you can ssh into it.
            
            ssh-keygen 

ssh-copy-id root@172.17.0.3 

ssh root@172.17.0.3

📜 Step 7: Create Ansible Playbook

#Go to the path  /etc/ansible/playbooknginx.yaml 

            
- hosts: all 
    
  tasks: 
      
    - name: Ensure nginx is installed 
        
      apt: 
        name: nginx 
        
        state: latest

🛠️ Install nginx using Ansible

 - hosts: all
          tasks:
            - name: Ensure nginx is installed
              apt:
                name: nginx
                state: latest

This task installs the latest version of nginx on all target hosts using the apt module.

Run the playbook:

ansible-playbook playbooknginx.yaml

🔁 Step 8: Repeat for Target2

Follow same steps as Target1
Update /etc/ansible/hosts with Target2 IP (e.g., 172.17.0.4)
Run playbook again

✅ Deployment Verified

🎉 Ansible installed and configured across master and targets.