Brief Introduction of Ansible

Ansible is an IT automation open source tool which automates application deployment,managing and configuring on many numbers of systems very easily and doing infra service orchestration ,cloud provisioning and many other things.

What is Ansible

Ansible is very easy to deploy because it does not use any agents on the client side.

Ansible uses playbook to execute automation jobs and Play book uses YAML language which is very simple language and easy to understand for the human.

Ansible is totally agentless which means Ansible works by associating your hubs through ssh(by default).

In the wake of associating with your hubs, Ansible pushes little projects called as "Ansible Modules". Ansible runs that modules on your hubs and evacuates them when wrapped up. Ansible manages your inventory in simple text files (These are the hosts file). Ansible uses the hosts record where one can aggregate the hosts and can control the activities on a particular gathering in the playbooks.

Ansible

Advantage of Ansible

Agentless: Ansible is completely agentless which means Ansible works by connecting your nodes through ssh.
Documentation: Documentation of ansible is very simple and easy
Ansible uses YAML language which is very simple language and easy to understand.
Ansible is open source IT automation tools.

yum:
     name: httpd
     state: latest

The above task connect to the node and check if httpd package is already installed and it is latest version or not.If it it latest version nothing will be happen.

How ansible works

Ansible need to be installed on one machine its called control machine and need to define the systems in the inventory file which is the text file on which configuration will done.