Tag Archives: S3

You might be paying too much for S3

Actually… you almost definitely are. There’s almost a hoarder’s instinct with S3 and related cloud storage. You keep things in there that you might not need any more, because it can be hard to identify what’s needed. However that’s not what I’m talking about

I’m talking about Aborted multipart uploads.

S3 includes options for multipart uploads on large files. This makes uploads more reliable, by breaking them up into smaller chunks, and makes them resumable, by starting again from a failed chunk. A lot of S3 clients have multipart built-in, so you might well be doing a multipart upload without even knowing it.

However when a multipart upload aborts and does not complete, the slot can be held open – there is literally no timeout – and it’s an object in your account, for which you’ll be charged.

Luckily, AWS provide ways to deal with this. You just have to search them out

If you’re using PowerShell, as I am, you can use the Remove-S3MultipartUploads cmdlet. If you’re using, say, node.js, you can use s3-upload-cleaner. There’s a way to clean these up in your chosen SDK, you just need to know about it and act on it.

There’s even a way to do this with an S3 bucket lifecycle policy, as explained by Jeff Barr here.

Now go forth, and stop paying too much for S3. Also, clean out the attic while you’re in there. You don’t need most of those files, do you? Hoarder.

Web-enabled S3 bucket migration using OctopusDeploy and PowerShell

I recently had to move a fairly large, fairly heavily trafficked web-enabled S3 bucket between two different AWS accounts. This turned out to be ever so slightly more than a simple drag-and-drop or copy operation.

Why? Well because it was web-enabled, mostly. Web-enabled S3 buckets have some restrictions on what they can be called, and buckets must be given a unique name. So you can’t just create a new webenabledbucket.com.au bucket in account B, copy the data across, flip the DNS and delete the bucket from account A. AWS won’t let you.

You have to have an intermediate stage where your files┬ácan live while the old bucket is deleted and the new one is provisioned. Which is where OctopusDeploy and the mighty Robot Army came to the rescue. Continue reading →