100-Days-Of-DevOps-Challenge-KodeKloud

Ansible Install Package

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 samba package on all app servers using Ansible yum module.
Make sure user thor should be able to run the playbook on jump host.

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.

Steps

Move into playbook directory
```
 cd playbook
```
Create two files inventory and playbook.yml:
```
 touch inventory playbook.yml
```

Update inventory file with these contents:

 [app]
 stapp01 ansible_user=tony ansible_ssh_password=Ir0nM@n
 stapp02 ansible_user=steve ansible_ssh_password=Am3ric@
 stapp03 ansible_user=banner ansible_ssh_password=BigGr33n

 [all:vars]
 ansible_ssh_common_args='-o StrictHostKeyChecking=no'

Update the playbook.yml with the contents from this playbook YAML file

Run the ansible playbook command:

 ansible-playbook -i inventory playbook.yml

Good to Know?

Ansible Package Management

yum Module: Red Hat/CentOS package management
apt Module: Debian/Ubuntu package management
package Module: Generic package manager (auto-detects)
dnf Module: Modern Red Hat package manager

Package Operations

Install: state: present or state: installed
Remove: state: absent or state: removed
Update: state: latest updates to newest version
Hold: Prevent package updates

Package Management Best Practices

Idempotency: Safe to run multiple times
Version Pinning: Specify exact versions for stability
Repository Management: Ensure proper repositories configured
Dependency Handling: Package managers handle dependencies

Cross-Platform Considerations

Package Names: May differ between distributions
Package Managers: Different tools (yum, apt, dnf, zypper)
Repository Configuration: Different repo formats
Service Names: Services may have different names

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