Tags » aws
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What comes after AWS?
Whatever displaces public cloud as the default model for large-scale computing has to be more than “AWS, but 3% better”.
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TIL: Getting a boto3 Session for an IAM role using Python
Why I use Sessions in boto3, and the Python function I use to create them.
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Finding a mystery IAM access key
Using the GetAccessKeyInfo and GetAccessKeyLastUsed APIs can help us trace an IAM key back to its source.
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Tag your infrastructure-as-code resources with a link to their definitions
Applying a default tag that points to the IaC definition makes it easy to go from the console to the code.
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Parsing CloudFront logs with Python
A couple of functions I use to get access to CloudFront logs as easy-to-use iterators.
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s3tree: viewing a tree of objects in S3 in my terminal
A script to give me a quick overview of some objects in a hierarchical view.
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Getting alerts about flaky ECS tasks in Slack
When ECS is “unable to consistently start tasks successfully”, we get a Slack alert that tells us to investigate.
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Publishing lots and lots of messages to SNS
Careful use of the
PublishBatch
API makes it quick and easy for me to send thousands of messages into SNS. -
A Python function to iterate through an S3 Bucket Inventory
Getting something that looks more like the output of the ListObjectsV2 API.
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Experimenting with jq as a tool for filtering JSON
I wanted to learn jq’s more powerful features, so I tried to filter some JSON from the AWS Secrets Manager CLI.
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Beware delays in SQS metric delivery
A mysterious problem with SQS-based autoscaling and an over-eager CloudWatch Alarm.
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Why is Amazon Route 53 named that way?
Digging into the history of Route 53, DNS, and port number assignments.
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Getting a monthly cloud costs report in Slack
Sending the AWS bill to Slack, so everyone can be more informed and intentional about spending.
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When is my EventBridge cron expression going to run next?
The AWS console will tell you when your EventBridge rule is going to run… if you know where to look.
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Finding misconfigured or dangling CloudWatch Alarms
A Python script that finds CloudWatch Alarms which are based on a now non-existent source.
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Listing deleted secrets in AWS Secrets Manager with boto3 and the AWS CLI
Diving into the internals of the AWS SDK to find deleted secrets.
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Downloading objects from/uploading files to S3 with progress bars in Python
Making it easier to see how long a file transfer will take, in the terminal.
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Screaming in the Cloud: Using the Cloud to Preserve the Future
I joined Corey Quinn to discuss my DynamoDB calculator and using the cloud to preserve digital collections.
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Creating short-lived, temporary roles for experimenting with AWS IAM policy documents
Create short-lived, temporary roles for experimenting with AWS IAM policy documents
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A script to copy images from Docker Hub to Amazon ECR
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Two Python functions for getting CloudTrail events
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S3 prefixes are not directories
Although an S3 prefix looks a lot like a directory path, they aren’t the same. Whether or not you include a trailing slash can change the behaviour.
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S3 keys are not file paths
Although an S3 key looks a lot like a file path, they aren’t always the same, and the distinction can trip you up.
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Getting every item from a DynamoDB table with Python
A Python function that generates every item in a DynamoDB table.
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Moving messages between SQS queues
You can send messages to a DLQ if they fail processing. What if you fix the bug, and you want to resend the failed messages?
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A deletion canary: testing your S3 bucket permissions
If you’ve tried to disable deletions in your S3 buckets, how do you know they’re working?
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Finding the CPU and memory bottlenecks in an ECS cluster
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November 2019 scripts: downloading podcasts, retrying flaky errors, Azure and AWS
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An AWS costs graph that works for me
How I get a Cost Explorer graph for the last 30 days of spending, broken down by service.
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Streaming large objects from S3 with ranged GET requests
Reliably reading a large object by stitching together multiple GetObject requests into a single Java InputStream.
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Listing even more keys in an S3 bucket with Python
Python functions for getting a list of keys and objects in an S3 bucket.
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TIL: DynamoDB: Conditional updates on nested fields
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Working with really large objects in S3
Code for processing large objects in S3 without downloading the whole thing first, using file-like objects in Python.
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Getting credentials for an assumed IAM Role
A script that creates temporary credentials for an assumed IAM role, and stores them in ~/.aws/credentials.
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Finding SNS topics without any subscriptions
I’m trying out Go, and I wrote a tool to help me find SNS topics that don’t have any subscriptions.
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A basic error logger for Python Lambdas
A snippet to make it a bit easier to debug errors in AWS Lambda functions written in Python.
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Implementing parallel scan in DynamoDB with Scanamo
Prototype code for running a parallel scan against a DynamoDB table, and using Scanamo to serialise rows as Scala case classes.
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Two shortcuts for using S3 in the shell
Two shell functions for editing and inspecting S3 objects as if they were local files.
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Getting every message in an SQS queue
Code for saving every message from an SQS queue, and then saving the messages to a file, or resending them to another queue.
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Listing keys in an S3 bucket with Python, redux
Python functions for getting a list of keys and objects in an S3 bucket.
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Downloading logs from Amazon CloudWatch
A detailed breakdown of how I wrote a Python script to download logs from CloudWatch.
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Listing keys in an S3 bucket with Python
A short Python function for getting a list of keys in an S3 bucket.