Ansible Replace Module

 Task:

There is data on all app servers in Stratos DC. The Nautilus development team shared some requirement with the DevOps team to alter some of the data as per recent changes. The DevOps team is working to prepare an Ansible playbook to accomplish the same. Below you can find more details about the task.

Create a playbook.yml under /home/thor/ansible on jump host; an inventory is already place under /home/thor/ansible on Jump host itself.

We have a file /opt/security/blog.txt on app server 1. Using Ansible replace module replace string xFusionCorp to Nautilus in that file.

We have a file /opt/security/story.txt on app server 2. Using Ansiblereplace module replace string Nautilus to KodeKloud in that file.

We have a file /opt/security/media.txt on app server 3. Using Ansible replace module replace string KodeKloud to xFusionCorp Industries in that file.

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.

Step 1) Verify the inventory file

thor@jump_host ~/ansible$ cat inventory 

stapp01 ansible_host=172.16.238.10 ansible_ssh_pass=Ir0nM@n ansible_user=tony

stapp02 ansible_host=172.16.238.11 ansible_ssh_pass=Am3ric@ ansible_user=steve

stapp03 ansible_host=172.16.238.12 ansible_ssh_pass=BigGr33n ansible_user=banner

thor@jump_host ~/ansible$ 

thor@jump_host ~/ansible$ cat ansible.cfg 

[defaults]

host_key_checking = False

thor@jump_host ~/ansible$ 

Step 2) Create a playbook

thor@jump_host ~/ansible$ cat playbook.yml 

---

- name: create a blank replace

  hosts: all

  become: true

  tasks:

    - name: Replace a String

      replace:

        path: /opt/security/blog.txt

        regexp: 'xFusionCorp'

        replace: "Nautilus"

      when: (ansible_user == "tony")

    - name: Replace a String

      replace:

        path: /opt/security/story.txt

        regexp: 'Nautilus'

        replace: "KodeKloud"

      when: (ansible_user == "steve")

    - name: Replace a String

      replace:

        path: /opt/security/media.txt

        regexp: 'KodeKloud'

        replace: "xFusionCorp Industries"

      when: (ansible_user == "banner")

Step 3) Run the playbook

thor@jump_host ~/ansible$ ansible-playbook -i inventory playbook.yml

PLAY [create a blank replace] ************************************************************************************************

TASK [Gathering Facts] *******************************************************************************************************

ok: [stapp03]

ok: [stapp02]

ok: [stapp01]

TASK [Replace a String] ******************************************************************************************************

skipping: [stapp02]

skipping: [stapp03]

changed: [stapp01]

TASK [Replace a String] ******************************************************************************************************

skipping: [stapp01]

skipping: [stapp03]

changed: [stapp02]

TASK [Replace a String] ******************************************************************************************************

skipping: [stapp01]

skipping: [stapp02]

changed: [stapp03]

PLAY RECAP *******************************************************************************************************************

stapp01                    : ok=2    changed=1    unreachable=0    failed=0    skipped=2    rescued=0    ignored=0   

stapp02                    : ok=2    changed=1    unreachable=0    failed=0    skipped=2    rescued=0    ignored=0   

stapp03                    : ok=2    changed=1    unreachable=0    failed=0    skipped=2    rescued=0    ignored=0