Ansible Lineinfile Module

 Question : 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 only. Therefore, prepare the required playbook to complete this task. Find more details about the task below.

We already have an inventory file under /home/thor/ansible on jump host. Create a playbook.yml under /home/thor/ansible on jump host itself.

Using the playbook 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 0755 on all app servers.

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

Please Note :-  Perform the below commands based on your question  server,  user name & other details might differ . So please read task carefully before executing. All the Best 👍

Solution:  

1. Go through the folder mentioned in task and create inventory & playbook files

    cd   /home/thor/ansible 

2. Create a playbook file   as per the task  ( refer to Video below for clarity )

thor@jump_host ~/ansible$ vi playbook.yml - name: Install httpd and setup index.html   hosts: stapp01, stapp02, stapp03   become: yes   tasks:     - name: Install httpd       package:         name: httpd         state: present     - name: Start service httpd, if not started       service:         name: httpd         state: started     - name: Add content in index.html. Create file if it does not exist and set file attributes       copy:         dest: /var/www/html/index.html         content: This is a Nautilus sample file, created using Ansible!         mode: "0755"         owner: apache         group: apache     - name: Update content in index.html       lineinfile:         path: /var/www/html/index.html         insertbefore: BOF         line: Welcome to xFusionCorp Industries!

3. Post file saved , run below command to execute the playbook

   

thor@jump_host ~/ansible$ ansible-playbook -i inventory playbook.yml   PLAY [Install httpd and setup index.html] **********************************************************   TASK [Gathering Facts] ***************************************************************************** ok: [stapp01] ok: [stapp03] ok: [stapp02]   TASK [Install httpd] ******************************************************************************* changed: [stapp03] changed: [stapp02] changed: [stapp01]   TASK [Start service httpd, if not started] ********************************************************* changed: [stapp01] changed: [stapp02] changed: [stapp03]   TASK [Add content in index.html. Create file if it does not exist and set file attributes] ********* changed: [stapp01] changed: [stapp02] changed: [stapp03]   TASK [Update content in index.html] **************************************************************** changed: [stapp01] changed: [stapp03] changed: [stapp02]   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     thor@jump_host ~/ansible$

4. validate the task by curl on app server and check

      

thor@jump_host ~/ansible$ ansible all -a "cat /var/www/html/index.html" -i inventory stapp02 | CHANGED | rc=0 >> Welcome to xFusionCorp Industries! This is a Nautilus sample file, created using Ansible! stapp03 | CHANGED | rc=0 >> Welcome to xFusionCorp Industries! This is a Nautilus sample file, created using Ansible! stapp01 | CHANGED | rc=0 >> Welcome to xFusionCorp Industries! This is a Nautilus sample file, created using Ansible! thor@jump_host ~/ansible$ thor@jump_host ~/ansible$ thor@jump_host ~/ansible$ curl http://stapp01 Welcome to xFusionCorp Industries! This is a Nautilus sample file, created using Ansible!thor@jump_host ~/ansible$ thor@jump_host ~/ansible$ thor@jump_host ~/ansible$ curl http://stapp02 Welcome to xFusionCorp Industries! This is a Nautilus sample file, created using Ansible!thor@jump_host ~/ansible$ thor@jump_host ~/ansible$ curl http://stapp03 Welcome to xFusionCorp Industries! This is a Nautilus sample file, created using Ansible!thor@jump_host ~/ansible$ thor@jump_host ~/ansible$

5. Click on Finish & Confirm to complete the task successful

Happy Learning!!!!

Apart from this if you need more clarity,  I have made a  tutorial video on this , please go through and share your comments. Like and share the knowledge