Upgrade AWS instance and Ubuntu Commands to check system resources

 Check system resources:

lscpu   # Check CPU details
free -h # Check RAM
df -h   # Check storage

Step 1: Check Instance Compatibility
Login to AWS Console → Go to EC2 Dashboard.
Select your t2.large instance.
Click on Instance Settings → Change Instance Type.
Check if c6i.4xlarge is available in the same Availability Zone.
If not, you may need to create a new instance and migrate your data.
 
Step 2: Stop the Instance
Go to EC2 Dashboard.
Select the t2.large instance.
Click Instance State → Stop Instance.
⚠️ Warning: Stopping the instance will cause temporary downtime.
Step 3: Change Instance Type
Select your stopped t2.large instance.
Click on Actions → Instance Settings → Change Instance Type.
From the dropdown, select c6i.4xlarge.
Click Apply.
Step 4: Start the Upgraded Instance
Select your instance.
Click Instance State → Start Instance.
Verify that your application is working as expected.