100-Days-Of-DevOps-Challenge-KodeKloud

Managing Jinja2 Templates Using Ansible

One of the Nautilus DevOps team members is working on to develop a role for httpd installation and configuration. Work is almost completed, however there is a requirement to add a jinja2 template for index.html file. Additionally, the relevant task needs to be added inside the role. The inventory file ~/ansible/inventory is already present on jump host that can be used. Complete the task as per details mentioned below:

• Update ~/ansible/playbook.yml playbook to run the httpd role on App Server 2.

• Create a jinja2 template index.html.j2 under /home/thor/ansible/role/httpd/templates/ directory and add a line This file was created using Ansible on <respective server> (for example This file was created using Ansible on stapp01 in case of App Server 1). Also please make sure not to hard code the server name inside the template. Instead, use inventory_hostname variable to fetch the correct value.

• Add a task inside /home/thor/ansible/role/httpd/tasks/main.yml to copy this template on App Server 2 under /var/www/html/index.html. Also make sure that /var/www/html/index.html file’s permissions are 0777.

• The user/group owner of /var/www/html/index.html file must be respective sudo user of the server (for example tony in case of stapp01).

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.

Steps

1. Move into ansible directory and check each files

    cd ansible
    ls
    cat inventory
    cat playbook.yml
    ls role
   

2. Create index.html.j2 file

    vi role/httpd/templates/index.html.j2
   

   copy paste the following line:

    <p> This file was created using Ansible on  </p>
   

3. Update main.yml of httpd role

    vi role/httpd/tasks/main.yml
   

   add these lines at the below:

    - name: Copy index.html template
      ansible.builtin.template:
        src: index.html.j2
        dest: /var/www/html/index.html
        mode: '0777'
        owner: ""
        group: ""
   

   Or you can replace all contents with this YAML file

4. Add target hosts in playbook.yml

    hosts: all
   

   playbook.yml file should be look like this:

    ---
    - hosts: all 
      become: yes
      become_user: root
      roles:
        - role/httpd
   

5. Run the playbook command:

    ansible-playbook -i inventory playbook.yml
   

6. verify with curl

    curl http://stapp01
    curl http://stapp02
    curl http://stapp03
   

   

7. Further check?

   login into each app server and run this command

    ls -la /var/www/html
   

    [tony@stapp01 ~]$ ls -la /var/www/html
    total 12
    drwxr-xr-x 2 root root 4096 Oct 25 02:47 .
    drwxr-xr-x 4 root root 4096 Oct 25 02:46 ..
    -rwxrwxrwx 1 tony tony   57 Oct 25 02:47 index.html
    [tony@stapp01 ~]$ 
   

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