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Can you answer these questions?
View all unanswered questionsThese questions still don't have an answer
Best practices
0
votes
0
replies
27
views
DynamoDB single‑table design: modeling a QuestionGroup listing over granular items
Question
I’m using DynamoDB with a single‑table design and need guidance on supporting a new access pattern.
Current model
We currently store data at a granular level, where each item represents a ...
- 163
0
votes
0
answers
43
views
Creating CA in AWS IoT with CDK
I'm trying to create CA in AWS IoT Core.
return new iot.CfnCACertificate(this.stack, id, {
autoRegistrationStatus: args.autoRegistration === true ? 'ENABLE' : 'DISABLE',
...
- 124k
-1
votes
0
answers
55
views
AWS DMS CDC from MongoDB fails with "Expected to read X operations as part of transaction but read Y" when using transactions
Problem
I am using AWS DMS to perform CDC (Change Data Capture) from MongoDB to PostgreSQL.
Full load works fine
CDC fails with the following error:
[SOURCE_CAPTURE] E: Expected to read 4 operations ...
- 1
Tooling
0
votes
0
replies
76
views
Automate the testing of AWS connect IVR call flows
I want to automate the testing of IVR call flows present in Amazon connect.
Tool should test the quality and validation testing of the call flow including playing correct voice prompts, take in the ...
1
vote
0
answers
45
views
AWS CLI returns UnknownOperationException when logging in
I've been using the AWS CLI on my Ubuntu machine for several months with no problem. A few days ago, the browser page opened by aws login began failing: I see <UnknownOperationException/> and ...
- 2,856
Recommended answers
View all recommended answersThese answers have been recommended
Best practices
0
votes
2
replies
81
views
Is it possible to run SQL UPDATE queries directly on data stored in S3 (e.g., via Redshift, Iceberg, or Athena)?
I’m trying to understand whether it’s possible to directly modify data stored in Amazon S3 using SQL style queries.
My goal is something like:
UPDATE my_table
SET column = value
WHERE condition;
...
- 273k
Answer
Amazon S3 is an object storage service. Files (objects) cannot be modified -- they can only be replaced, deleted or newly created. Fortunately, Iceberg supports the ability to update data by writing ...
Advice
1
vote
3
replies
90
views
Transparently send RDS traffic via an EC2 instance
Hey AWS / Postgres folks,
Running into a tricky situation.
Clients currently connect directly to my RDS Postgres endpoint using the usual host/user/password. Now I need every connection to first pass ...
- 273k
Answer
Unclear that this could possibly be completely transparent to the client. The current RDS endpoint name is going to be an AWS-created identifier, such as mydb.abcd.us-west-1.rds.amazonaws.com, which ...
View answer
- 80.1k
1
vote
1
answer
87
views
InvalidClientTokenId with boto3 on get_policy
I am strangely getting an InvalidClientTokenId error when running get_policy, while all other previous calls have succeeded.
I can successfully authenticate:
import boto3
session = boto3.Session(...
- 80.1k
Answer
Accepted
The standard way to create an AWS service client looks like this: import boto3 # Create an IAM client using the default session iam_client = boto3.client('iam') But in your case, you are supplying a ...
View answer
- 80.1k
Advice
2
votes
5
replies
126
views
Preparing for AWS Cloud Practitioner exam – are W3Schools notes sufficient?
I’m currently preparing for the AWS Certified Cloud Practitioner (CLF-C02) exam. So far, I’ve been studying AWS basics using W3Schools AWS tutorials and Skill builder Essentail course. However, I ...
- 3,422
Answer
A good place to discuss AWS Certifications is: https://www.reddit.com/r/AWSCertifications/ Cloud Practitioner is fairly high-level, so online courses are sufficient. For later certifications, you'll ...
Advice
0
votes
2
replies
96
views
Can anyone explain the overall architecture of AWS Lambda backend to me?
I have experience in frameworks like Django, Flask and FastAPI. Now I have a project requirement to do this in Lambda architecture.
Do I need to just vibe code it or learn and understand first, then ...
- 80.1k
Answer
In response to your question on whether you need to understand Lambda before diving in: no, but understanding is much better than not understanding. Recommend that you read the plentiful documentation ...
View answer
- 80.1k
See what's trending
View all trending questionsThese are the most active questions in AWS Collective
1159
votes
44
answers
993k
views
Downloading an entire S3 bucket?
I noticed that there does not seem to be an option to download an entire s3 bucket from the AWS Management Console.
Is there an easy way to grab everything in one of my buckets? I was thinking about ...
- 3,095
1016
votes
42
answers
770k
views
"UNPROTECTED PRIVATE KEY FILE!" Error using SSH into Amazon EC2 Instance (AWS) [closed]
I've created a new linux instance on Amazon EC2, and as part of that downloaded the .pem file to allow me to SSH in.
When I tried to ssh with:
ssh -i myfile.pem <public dns>
I got:
@@@@@@@@@@@@@...
- 60.9k
338
votes
71
answers
730k
views
Amazon S3 - How to fix 'The request signature we calculated does not match the signature' error?
I have searched on the web for over two days now, and probably have looked through most of the online documented scenarios and workarounds, but nothing worked for me so far.
I am on AWS SDK for PHP V2....
- 1,211
485
votes
38
answers
352k
views
How to get an AWS EC2 instance ID from within that EC2 instance?
How can I find out the instance id of an ec2 instance from within the ec2 instance?
556
votes
23
answers
643k
views
Change key pair for ec2 instance
How do I change the key pair for my ec2 instance in AWS management console? I can stop the instance, I can create new key pair, but I don't see any link to modify the instance's key pair.
- 70.2k
Learn something new
These are the most recent articles in AWS Collective
0
votes
413
views
1 minute read
AWS Management Console now supports simultaneous sign-in for multiple AWS accounts
AWS has changed the way we interact with AWS console for sign-in. Jan 16, 2025 AWS has announced the support for multiple console sessions for signing into different aws accounts in the same browser.
...
- 12k
4
votes
637
views
8 minute read
How to achieve fast, scalable, robust & cost optimized scaling of tasks on AWS ECS
Summary
There are multiple use cases to containerize and host proprietary applications on AWS ECS which is “a fully managed container orchestration service that makes it easy for you to deploy, manage,...
- 3,024
8
votes
695
views
2 minute read
Overcoming Front-End Back-End Coupling with AWS Event-Driven Architecture
introduction
As a developer, I've always been interested in event-driven architectures (EDAs) and how they can improve the overall performance and scalability of web applications. However, I never ...
- 1,055
6
votes
1k
views
1 minute read
Always-on access for your data in Amazon S3, using cross-Region replication and Multi-Region Access Points (MRAP)
To improve durability of your data in the cloud, you should replicate it to multiple locations. For data in Amazon S3, it is automatically stored across multiple devices spanning a minimum of three ...
- 1,125
6
votes
1k
views
3 minute read
Local development, testing, and debugging of serverless applications defined in Terraform using AWS SAM CLI
One question we hear from developers using Terraform and AWS Lambda functions is how to locally test the Lambda function. Here’s a great example — I have a simple terraform file with a Lambda function....
- 159
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