Resizing the storage of an AWS EC2 instance involves a few steps. The process depends on whether your instance is EBS-backed or instance-store-backed.
For EBS-backed Instances:
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Stop the Instance:
- Before making any changes to the instance, it's recommended to stop it to prevent any potential data corruption.
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Open the AWS Console:
- Log in to the AWS Management Console.
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Navigate to EC2 Dashboard:
- Go to the EC2 Dashboard.
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Locate the Instance:
- Find and select the instance for which you want to change the storage.
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Identify the Root Volume:
- In the "Description" tab, find the "Root device" information. Note down the EBS volume ID.
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Create a Snapshot (Optional but recommended):
- It's a good practice to create a snapshot of your existing volume before making any changes. This provides a backup in case something goes wrong.
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Modify Volume Size:
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In the EC2 Dashboard, navigate to "Volumes" in the left-hand menu.
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Find the EBS volume ID associated with your instance's root device. Select the volume and click on "Actions" > "Modify Volume".
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Adjust the size of the volume and click "Modify".
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Start the Instance:
- Go back to your instance in the EC2 Dashboard and click "Actions" > "Start".
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SSH into the Instance:
- Once the instance is running, SSH into it.
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Resize the File System:
- If you've extended the root volume, you'll need to extend the file system to utilize the additional space. The specific commands will depend on the operating system you're using.
For Instance-store-backed Instances:
Resizing the root volume of an instance-store-backed instance is more complex. It often involves creating an AMI (Amazon Machine Image) of the instance, launching a new instance from that AMI with a larger root volume, and migrating your data.
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Create an AMI:
- Stop your instance and create an AMI from it.
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Launch a New Instance:
- Launch a new instance from the AMI you created, selecting a larger root volume size.
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Migrate Data:
- Once the new instance is running, you'll need to migrate your data from the old instance to the new one. This might involve copying files, databases, etc.
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Test and Verify:
- After migrating, thoroughly test your new instance to ensure everything is working correctly.
Remember, always back up your data before making significant changes to your instances.