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-just documenting to play with Ansible
+# Ansible Quick Overview
+
+---
+
+### **What is Ansible?**
+Ansible is an automation tool for configuring systems and deploying applications using YAML files.
+
+---
+
+### **Core Concepts**
+
+- **Playbook**: A YAML file with tasks.
+  ```yaml
+  - hosts: all
+    tasks:
+      - name: Install nginx
+        apt:
+          name: nginx
+          state: present
+  ```
+
+- **Inventory**: List of servers to manage.
+  ```ini
+  [webservers]
+  192.168.1.10
+  ```
+
+- **Modules**: Actions like `apt`, `copy`, `service`.
+
+---
+
+### **Key Commands**
+
+- **Run Playbook**: 
+  ```bash
+  ansible-playbook playbook.yml
+  ```
+
+- **Check if hosts are reachable**:
+  ```bash
+  ansible all -m ping
+  ```
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