Once upon a time I was a good little sysadmin that dutifully automated everything I could get my hands on. My independent spirit served me well in those days. It taught me to get stuff done and guided me to higher paying employment opportunities. That is until the day that it ganged up with my entrepreneurial spirit and they convinced me that I could do much cooler things on my own. I gleefully drank their koolaid and have since started my own automation consultancy, Howell IT.
An instance with an IAM Role has temporary security credentials that are automatically rotated. So they're easy to get from your instance, but they expire regularly.
Using them is a bit tough. CloudFormation can't use temporary credentials directly. The Amazon Linux AMI has Python boto installed, and it's now smart enough to find and use those credentials for you automatically. Here's a one-liner you can put in a script to fetch a file from S3 bucket b , key k to local file f :.
Here's a full example template that downloads an S3 asset onto a new EC2 instance using cloudinit, returning its contents as a Stack Output :. Stack Overflow for Teams — Collaborate and share knowledge with a private group.
Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. How can I securely download a private S3 asset onto a new EC2 instance with cloudinit? Ask Question. Asked 9 years, 4 months ago. Active 4 years, 10 months ago.
Viewed 19k times. Christopher Christopher And found a much better way to do this using the aws s3 cp command, like I described in my answer see above or below — Anton Danilchenko. Anton Danilchenko Anton Danilchenko 2, 23 23 silver badges 23 23 bronze badges. Hope it helps anyone who forgot to include this. Hilmi Marzuqi Hilmi Marzuqi 11 1 1 bronze badge.
Please make sure that the read permission has been given correctly. ZoomRui ZoomRui 19 5 5 bronze badges. Dino Dino 1 1 1 bronze badge. John John 37 1 1 silver badge 6 6 bronze badges. I recommend against rhetoric questions in answers. They risk being misunderstood as not an answer at all. You are trying to answer the question at the top of this page, aren't you?
Otherwise please delete this post. Please phrase this as an explained conditional answer, in order to avoid the impression of asking a clarification question instead of answering for which a comment should be used instead of an answer, compare meta. For example like "If your problem is I know I'm too late to this post.
But thought I'll add something no one mentioned here. You can try the below steps and see if it works for you. These steps did not work for me but I have seen these working for others. You can definitely try. Note - If you are wondering, let me tell you that you do not need to specify any region in the below commands. To download the files as per your requirements, you can use the following command -.
To download the files one from the images folder in s3 and the other not in any folder from the bucket that I created, the following command can be used -. And then we include the two files from the excluded files. Let us say we have three files in our bucket, file1, file2, and file3. And then with the help of include, we can include the files which we want to download. Example - --include "file1" will include the file1. To download the entire bucket, use the below command -. The above command downloads all the files from the bucket you specified in the local folder.
As you may have noticed, we have used sync or cp in the above commands. Just for your knowledge, the difference between the sync and cp is that the sync option syncs your bucket with the local folder whereas the cp command copies the objects you specified to the local folder.
For our purpose to download files from s3 we can use either one of sync or cp.
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