29 lines
1.2 KiB
Markdown
29 lines
1.2 KiB
Markdown
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## AWS EC2 - Elastic IP
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### Requirements
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* An EC2 instance with public IP (not elastic IP)
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### Objectives
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1. Write down the public IP of your EC2 instance somewhere and stop & start the instance. Does the public IP address is the same? why?
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2. Handle this situation so you have the same public IP even after stopping and starting the instance
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### Solution
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1. Go to EC2 service -> Instances
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1. Write down current public IP address
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2. Click on "Instance state" -> Stop instance -> Stop
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3. Click on "Instance state" -> Start Instance
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4. Yes, the public IP address has changed
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2. Let's use an Elastic IP address
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1. In EC2 service, under "Network & Security" click on "Elastic IP"
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2. Click on the "Allocate elastic IP address" button
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3. Make sure you select "Amazon's pool of IPv4 addresses" and click on "Allocate"
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4. Click on "Actions" and then "Associate Elastic IP address"
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1. Select "instance", choose your instance and provide its private IP address
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2. Click on "Associate"
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5. Now, if we go back to the instance page, we can see it is using the Elastic IP address as its public IP
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Note: to remove it, use "disassociate" option and don't forget to also release it so you won't be billed.
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