Update AWS CloudFront configuration using AWS CLI

Regardless of whether you just need to make a quick manual change or it’s part of your CI/CD process, AWS CLI can be very useful for both scenarios.

Let’s dig into updating AWS CloudFront with AWS CLI!

Prerequisite

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1. You have AWS CLI installed
2. You have jq installed (not required but useful)

Update AWS CloudFront configuration using AWS CLI

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Getting ETag

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A Distribution ETag is required to update its configuration

aws cloudfront get-distribution-config --id {ID-OF-DISTRIBUTION} | jq '. | .ETag'

Take note of the ETag value; you will need it later.

Getting CloudFront configuration

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aws cloudfront get-distribution-config --id {ID-OF-DISTRIBUTION} | jq '. | .DistributionConfig' > /tmp/cloudfront-{ID-OF-DISTRIBUTION}

Now you can modify configuration file.

Updating CloudFront configuration

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Now we will send the modified configuration file to the AWS CloudFront distribution.

aws cloudfront update-distribution --id {ID-OF-DISTRIBUTION} --if-match {ETag-value} --distribution-config file:///tmp/cloudfront-{ID-OF-DISTRIBUTION}

That’s it! Your changes got deployed and applied.

Troubleshooting

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The If-Match version is missing or not valid for the resource.

If you see this error, you have used the wrong ETag value for --if-match. After you run update-distribution, your CloudFront’s ETag will change, and you will need to obtain it again.

The End

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That’s it! I hope you found something useful in this post! If your company needs some help with AWS, get in touch.