AWS Collective
A collective for developers who utilize Amazon Web Services' infrastructure and platform capabilities. The AWS Collective is organized and managed by the Stack Overflow community as a resource for developers.
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Pinned Bulletins
View all 1 bulletinsAWS has some news to share
Bulletin
2 min read
438
views
Can you answer these questions?
View all unanswered questionsThese questions still don't have an answer
0
votes
0
answers
18
views
psycopg2 OperationalError: could not open certificate file "/root/.postgresql/postgresql.crt": Permission denied (AWS RDS, Celery worker, Docker)
I am facing a PostgreSQL SSL issue while running a Celery worker inside Docker that connects to an AWS RDS PostgreSQL instance.
[2026年01月02日 13:46:09,119: ERROR/ForkPoolWorker-8] Task app.tasks....
0
votes
0
answers
25
views
POSTGRES_HOST needed in user data to launch EC2 but postgres needs to be deployed in RDS to create POSTGRES_HOST, how to break this loop in cdk?
I am using aws-cdk to create an EC2 instance running Amazon Linux 2023 and an RDS instance running PostgreSQL 18.1
My EC2 instance will run a python application inside docker
This python application ...
0
votes
0
answers
31
views
DuckDB AWS Credential refresh
I am running a DuckDB job in an AWS Fargate container. It is accessing .parquet files on S3 through the DuckLake extension. The container assumes an IAM role which DuckDB can access via CREATE SECRET (...
0
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0
answers
9
views
Why does Milvus fail with "fs == nullptr" when loading large HNSW indexes from S3 storage?
I’m running into a fatal error when loading a large HNSW index in Milvus 2.6.7, deployed via Docker, and backed by S3-compatible object storage.
Here is the setup:
Collection size: ~50 million ...
0
votes
0
answers
43
views
Network HTTP/2 requests from Next.js frontend randomly stalled/queued towards node backend EC2 behind ALB
I have a Next.js frontend and Node.js backend application running on AWS. There are two environment levels:
Staging: Separate EC2 instances for frontend and backend
Production: Separate EC2 instances ...
Recommended answers
View all recommended answersThese answers have been recommended
1
vote
1
answer
120
views
Presigned URL for S3 - Check your key and signing method
I am trying to get an object from my S3 bucket using pre-signed URLs (from the AWS docs):
import boto3
from botocore.config import Config
from botocore.exceptions import ClientError
def ...
Answer
Accepted
I have found in the past that things like this that seem simple and should just work, and aren't easily reproduced by others, are sometimes caused by the use of an older SDK that's incompatible with ...
Best practices
1
vote
1
replies
146
views
How do I determine the correct order of Lambda layers in AWS?
I’m working with AWS Lambda and need to attach multiple Lambda layers to a function. I know that AWS allows you to specify the order of layers, but I’m unclear on how the ordering actually affects ...
Answer
The merge order is the order in which the layers were added to the function, the last layer added/merged wins, and files are overwritten under /opt. This article on potential hijacks explains in more ...
3
votes
1
answer
330
views
Self-signed certificate error when forcing SSL connecting to RDS PSQL [closed]
Hoping to get yalls help on the issue I am now sort of desperate about
Context:
I am deploying a docker container on EC2 Ubuntu, where it is used by two images - one for my Prisma-NestJs-based API and ...
Answer
Accepted
The AWS RDS certificates will not be pulled down by running update-ca-certificates. You have two options: Don't verify the cert, and just use sslmode require or no-verify Verify the cert using ...
1
vote
1
answer
131
views
Exporting Incremental RDS Snapshot into an S3 Bucket
I would like to ask two questions;
1- if RDS snapshots are incremental when we exported the incremental snapshot in to s3 via ExportTask will it be the only partial data or full data.
2- When data is ...
Answer
Accepted
The very first snapshot of an RDS database contains all of the DB's data. Subsequent snapshots are performed incrementally, but from your perspective a snapshot is a point in time view of the entire ...
1
vote
2
answers
149
views
AWS CloudFormation deploy template stored in an S3 bucket [closed]
Trying to deploy a CloudFormation template that is stored in an S3 bucket as the template size is larger than 51kb so cant be done direct (from what I am led to believe and have seen when trying)
...
Answer
Accepted
The aws cloudformation deploy command is a higher-level abstraction over CloudFormation stacks than the aws cloudformation xxxx-stack commands. When using aws cloudformation deploy, it's designed to ...
See what's trending
View all trending questionsThese are the most active questions in AWS Collective
1158
votes
44
answers
986k
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 ...
1016
votes
42
answers
769k
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:
@@@@@@@@@@@@@...
334
votes
71
answers
721k
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....
485
votes
38
answers
351k
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
641k
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.
Learn something new
These are the most recent articles in AWS Collective
0
votes
359
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.
...
4
votes
570
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,...
8
votes
689
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 ...
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 ...
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....
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