Connect AWS EC2 SSH

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### ✅ **Standard SSH Method (with PEM file)**
#### 🧾 Requirements:
– EC2 instance is **running**
– Security Group allows **port 22 (SSH)** from your IP
– You have the **EC2 public IP or DNS**
– You have the **`.pem` key file** (e.g., `my-key.pem`)

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### 🖥️ **Command to SSH into EC2:**

ssh -i /path/to/your-key.pem ubuntu@ec2-xx-xx-xx-xx.compute-1.amazonaws.com

Replace:
– `/path/to/your-key.pem` → with the full path to your PEM file
– `ubuntu` → with the correct EC2 username (see below)
– `ec2-xx-xx-xx-xx.compute-1.amazonaws.com` → with your EC2 Public DNS or IP

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### 🧑‍💻 Common EC2 usernames by AMI:
| OS | Username |
|—-|———-|
| Ubuntu | `ubuntu` |
| Amazon Linux | `ec2-user` |
| CentOS | `centos` |
| RHEL | `ec2-user` |
| Debian | `admin` |

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### 🧱 Example for your saved info:
If you're using the PEM file at `D:awsk.pem` (as mentioned before) and your host is:

ec2-16-170-254-93.eu-north-1.compute.amazonaws.com

Then run this in your terminal (Git Bash/WSL/Ubuntu/Windows Terminal):

ssh -i "D:awsk.pem" ubuntu@ec2-16-170-254-93.eu-north-1.compute.amazonaws.com

**Windows CMD or PowerShell:**
You may need to convert path:

ssh -i "D:/aws/k.pem" ubuntu@ec2-16-170-254-93.eu-north-1.compute.amazonaws.com

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### 🔒 Permission Error?
Run:

chmod 400 /path/to/k.pem

If on Windows, ensure the file is not accessible by others.

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Need help connecting from Windows with **PuTTY** or using **IAM user instead of PEM**? Let me know.