Ansible Install Package.md

Problem Statement

---

The Nautilus Application development team wanted to test some applications on app servers in Stratos Datacenter. They shared some pre-requisites with the DevOps team, and packages need to be installed on app servers. Since we are already using Ansible for automating such tasks, please perform this task using Ansible as per details mentioned below:

• Create an inventory file /home/thor/playbook/inventory on jump host and add all app servers in it.

• Create an Ansible playbook /home/thor/playbook/playbook.yml to install httpd package on all app servers using Ansible yum module.

• Make sure user thor should be able to run the playbook on jump host.

Solution

---

1. Navigate to the playbook directory:

   cd /home/thor/playbook/

2. Create and edit the inventory file:

   Open the inventory file with your preferred text editor:

   vi inventory

   Add the following content to define the app servers:

   [app_servers]
   stapp01 ansible_host=172.16.238.10 ansible_user=tony ansible_ssh_pass=Ir0nM@n
   stapp02 ansible_host=172.16.238.11 ansible_user=steve ansible_ssh_pass=Am3ric@
   stapp03 ansible_host=172.16.238.12 ansible_user=banner ansible_ssh_pass=BigGr33n

3. Verify connectivity to the app servers:

   Run a basic Ansible command to ensure you can communicate with the app servers:

   ansible app_servers -m ping -i inventory

   You should see a response indicating successful communication:

   stapp03 | SUCCESS => {
       "ansible_facts": {
           "discovered_interpreter_python": "/usr/bin/python3"
       },
       "changed": false,
       "ping": "pong"
   }
   stapp01 | SUCCESS => {
       "ansible_facts": {
           "discovered_interpreter_python": "/usr/bin/python3"
       },
       "changed": false,
       "ping": "pong"
   }
   stapp02 | SUCCESS => {
       "ansible_facts": {
           "discovered_interpreter_python": "/usr/bin/python3"
       },
       "changed": false,
       "ping": "pong"
   }
   

4. Create and edit the Ansible playbook:

   Open the playbook file for editing:

   vi playbook.yml

   Add the following YAML configuration to install the httpd package:

   ---
   - hosts: app_servers
     become: yes
     become_user: root
     tasks:
       - name: Install httpd package on all servers
         yum:
           name: httpd
           state: present

5. Run the Ansible playbook:

   Execute the playbook to apply the configuration to all specified servers:

   ansible-playbook -i inventory playbook.yml

   The output should confirm that the httpd package was installed successfully on all servers:

   PLAY [app_servers] **********************************************************************
   
   TASK [Gathering Facts] ******************************************************************
   ok: [stapp03]
   ok: [stapp01]
   ok: [stapp02]
   
   TASK [Install httpd package on all servers] *********************************************
   ok: [stapp01]
   ok: [stapp02]
   ok: [stapp03]
   
   PLAY RECAP ******************************************************************************
   stapp01                    : ok=2    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0
   stapp02                    : ok=2    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0
   stapp03                    : ok=2    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0