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Ansible Lineinfile Module.md

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Problem Statement

The Nautilus DevOps team want to install and set up a simple httpd web server on all app servers in Stratos DC. They also want to deploy a sample web page using Ansible. Therefore, write the required playbook to complete this task as per details mentioned below.

We already have an inventory file under /home/thor/ansible directory on jump host. Write a playbook playbook.yml under /home/thor/ansible directory on jump host itself. Using the playbook perform below given tasks:

Install httpd web server on all app servers, and make sure its service is up and running.

Create a file /var/www/html/index.html with content:

This is a Nautilus sample file, created using Ansible!

Using_lineinfile_ Ansible module add some more content in /var/www/html/index.html file. Below is the content:

Welcome to xFusionCorp Industries!

Also make sure this new line is added at the top of the file.

The /var/www/html/index.html file's user and group owner should be apache on all app servers.

The /var/www/html/index.html file's permissions should be 0777 on all app servers.

Note: Validation will try to run the playbook using command ansible-playbook -i inventory playbook.yml so please make sure the playbook works this way without passing any extra arguments.

Solution

  1. Navigate to the Ansible Directory

    cd /home/thor/ansible

  2. Create the Ansible Playbook File

    Use a text editor to create and edit the playbook.yml file.

    vi playbook.yml

  3. Add the Playbook Content

    Insert the following YAML configuration into the playbook.yml file:

    ---
- hosts: all
  become: yes
  tasks:
    - name: Install httpd on all servers
      yum:
        name: httpd
        state: present

    - name: Start and enable httpd service
      service:
        name: httpd
        state: started
        enabled: yes

    - name: Create /var/www/html/index.html with initial content
      copy:
        dest: /var/www/html/index.html
        content: |
          This is a Nautilus sample file, created using Ansible!
        owner: apache
        group: apache
        mode: '0777'

    - name: Add additional content to /var/www/html/index.html
      lineinfile:
        path: /var/www/html/index.html
        line: Welcome to xFusionCorp Industries!
        insertbefore: BOF
        create: yes

5.Run the Playbook

Execute the following command to run the playbook using the inventory file:

ansible-playbook -i inventory playbook.yml

Expected Output

Upon running the playbook, you should see output similar to the following:

PLAY [all] ******************************************************************************

TASK [Gathering Facts] ******************************************************************
ok: [stapp01]
ok: [stapp02]
ok: [stapp03]

TASK [Install httpd on all servers] *****************************************************
changed: [stapp01]
changed: [stapp02]
changed: [stapp03]

TASK [Start and enable httpd service] *****************************************************
changed: [stapp01]
changed: [stapp02]
changed: [stapp03]

TASK [Create /var/www/html/index.html with initial content] *******************************
changed: [stapp01]
changed: [stapp02]
changed: [stapp03]

TASK [Add additional content to /var/www/html/index.html] *******************************
changed: [stapp01]
changed: [stapp02]
changed: [stapp03]

PLAY RECAP ******************************************************************************
stapp01                    : ok=5    changed=4    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0
stapp02                    : ok=5    changed=4    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0
stapp03                    : ok=5    changed=4    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0