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Questions tagged [amazon-lambda]

This tag is for questions about Amazon Web Services' "Lambda".

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Creating a custom CloudWatch Event to monitor every new commit for GitHub repository instead of CodeCommit repo state change

Could you please assist me in understanding if it is possible to create a custom CloudWatch Event to monitor every new commit for GitHub repositories instead of CodeCommit repo state changes? It has ...
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AWS Lambda triggered by SQS - Maximize Messages per Call

i have a pretty busy SQS Queue which triggers a Lambda function. However, i think it would make a great cost reduction if one Lambda Call would contain 10 messages instead of 1-5 messages. SQS ...
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1 answer
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How do you set a self-destruct or maximum uptime in AWS?

Situation We have a sandbox AWS account for trying things out. It is not for production, purely just for playing around with all the toys that AWS provide. We want to encourage everyone to explore and ...
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1 vote
1 answer
189 views

CloudFront does not seem to invoke lambda@edge function

I have a CloudFront distribution. The origin is an S3 bucket that uses OAI. I have created a lambda@edge function following directions from https://aws.amazon.com/blogs/compute/implementing-default-...
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20 views

Build pipeline to upload .jar package to AWS Lambda

So far according to the documentation at https://docs.aws.amazon.com/lambda/latest/dg/java-package.html, the only way to upload .jar code to an AWS Lambda function would be to manually upload the file ...
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1 answer
19 views

Sending push notification to s3 origin website from lambda

I want to send a websockets notification from lambda function to clients, on a website hosted via s3 origin with cloudfront. Could someone help me with this, please? Thanks.
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1 vote
1 answer
106 views

What is causing BadRequestException when calling the ExecuteStatement operation on Aurora Serverless db

I have a lambda function that retrieves records from AWS Aurora Serverless db. Now I thought of adding api gateway to trigger the lambda function but I get this error Connect an AWS Lambda function ...
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50 views

Extracting data from Google Analytics GA4 property using AWS Lambda

I am trying to extract GA4 data and store it in a S3 bucket using AWS lambda function. But I am getting an error. "<HttpError 400 when requesting https://analyticsreporting.googleapis.com/v4/...
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12 views

Google cloud functions contains whole application code unlike aws lambda which contains only function specific code

I was using aws lambda for few projects. In lambda i can package only function specific code so every function has only its own code. and now i am using google cloud functions for my new project. I've ...
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-2 votes
1 answer
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How does efs pricing works lambda?

Does the pricing only applicable for storage or there are also other charges associated wit it? for eg: if a lambda function puts 1Gb/s of file on efs via a private vpc then how much it will charge ...
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Async lambda function times out even though in same vpc

I have a lambda function which should invoke another lambda function asynchronously but every times I run it times out no matter how many minutes I give it to the function. They are both in same ...
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Long processes in AWS lambda

Forgive me if this question is answered elsewhere but most references to long lived AWS Lambda are about process runaway or something going wrong. My question is: is Lambda (or whatever is Microsoft'...
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1 answer
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Deploying a Serverless site behind CloudFront

I use Serverless to deploy a website to an AWS Lambda. This works fine. I now want to use CloudFront to proxy access to this Lambda and cache requests for static files. I have set up a CloudFront ...
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Does freezing the cgroup wait for TCP send buffers to be flushed?

What guarantees are there for flushing the TCP send buffers, if any, when the freezer subsystem freezes a cgroup? Consider the following scenario: Server A, which runs in a cgroup, sends data to ...
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1 vote
1 answer
1k views

How can I search across CloudWatch log groups on AWS?

I have a number of lambda functions which run my serverless backend. Something somewhere is misbehaving, and I need to bring up/search all the logs from a particular time — from all log groups, not ...
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1 vote
0 answers
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Is there a 1:1 correspondence between CodeDeploy applications and a Lambda?

We're investigating CodeDeploy for automating deployments of a service that is comprised of: Multiple Lambdas, with some triggered by SQS queues and others accepting HTTP requests via API Gateway API ...
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1 answer
153 views

Lambda with VPC long cold start

I have few lambda functions that are connecting to Mongo Atlas cluster. Connection between Mongo Atlas and my AWS account is done via VPC Peering. Lambda functions are attached to this VPC. I'm ...
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1 vote
1 answer
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How can I track user requests to my external API on AWS?

I'm a bit of a beginner but I'm working on creating an external API with AWS SAM (using API Gateway and Lambda), and I want a way to track & monitor usage. Some options I was considering: 1. Store ...
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-1 votes
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How to add IP to in existing inbound rule in a security group of Amazon EC2?

I am using Amazon API via a Lambda function to allow my teammates access my server. Using post method I am invoking this lambda function to add teammate's IPs in inbound rule. I want to add IPs to an ...
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How can I set up my HostedZone so that it delegates to a parent DNS record in another AWS account?

Introduction I have some TypeScript code that uses CDK to create an API Gateway and a Lambda. It works and deploys to a standard AWS URL. So far so good. I now need to transfer the API Gateway so that ...
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1 vote
0 answers
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Autoscaling - lifecylehook implementation

I'm trying to implement my first ASG with a lifecycle hook and I am having this issue: LifecycleHandlerFunction: Encountered unsupported property Role The following resource(s) failed to create: [...
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2 answers
279 views

Modify AWS Lambda function inside CloudFormation stack

I've launched this stack and needed to update it's Lamdba function, I've made some amendments and hit deploy, a new version of function was saved, however Lambda application still refers to the first ...
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Kubernetes + AWS Lambda [closed]

I currently have an API service running on AWS Lambda, but it's getting expensive due to high AWS costs. My aim is to replace 95 % of the usage with a cluster of servers and still handle peaks with ...
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How to access a private ELB URL in AWS Lambda

I have an ELB that is pointing HTTPS (443) - https://dummyendpint.com. This is in Private VPC and exposed to only whitelisted IP addresses. Now I am working on this endpoint (https://dummyendpint.com) ...
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0 votes
1 answer
462 views

AWS lamba start_instances gives pending response but console still shows stopped

I have a lambda function that I have setup to start an instance: import boto3 ec2 = boto3.client('ec2') response = ec2.start_instances( InstanceIds=['i-xxx'] ) print(response) The response looks ...
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How do i add nodejs runtime layer layer to my Python Lambda on AWS?

wscat test In my Python lambda I want to use wscat which requires node: $ /opt/wscat-layer/bin/wscat /usr/bin/env: node: No such file or directory Question: How do I add nodejs runtime to my Python ...
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5 votes
1 answer
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How to stop Lambda from incurring CloudTrail charges related to CreateLogStream?

I manage an actually not very big website, but Lambda is used extensively, invoked many times per site visit, resulting in hundreds of thousands of calls per month. I noticed a spike in CloudTrail ...
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1 vote
1 answer
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403 when using Terraform to attach Lambda Function to Target Group w/ ALB

I'm able to create Instances, Target Groups, and ALBs just fine with Terraform, but am getting stuck when trying to use Lambda Functions. It looks like the Lambda function gets created OK along with ...
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0 votes
1 answer
35 views

What could be a best solution for ElasticBeanstalk environment stop/start for cost saving

So i have a use case where we only need Elasticbeanstalk environment only in weekdays and in business hours only. So here at the moment i'm using a lambda function which terminates App environment and ...
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0 votes
1 answer
240 views

How to stream CloudWatch log group to specific Lambda function version?

When creating a new subscription filter for a CloudWatch log group, the AWS Console doesn't seem to offer a way to select a specific Lambda fn version. This is important for CI/CD where I might want ...
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2 votes
1 answer
776 views

AWS CloudFormation - Creating Layer Version and Function that uses layer

I have a Cloudformation template that currently looks roughly like the following. Resources: MyLayer: Type: AWS::Lambda::LayerVersion Properties: CompatibleRuntimes: - nodejs12....
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0 votes
1 answer
166 views

Lambda connect to mongodb which only allow localhost connection in ec2

I have a MongoDB which only allow connection from localhost, running on my ec2. Currently, only my nodejs app which runs on the same ec2 instance connects to the mongodb using this command mongoose....
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3 votes
1 answer
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Can't deploy same lambda in multiple regions from s3 bucket

We are deploying a lambda using CloudFormation SAM templates. We would like to package the lambda into an S3 bucket, then deploy the AWS::Serverless::Function in multiple regions. However, lambda code ...
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2 votes
1 answer
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Resizing images using AWS Lambda - issue

I'm trying to resize images automatically using Amazon S3/Lambda. The problem is I cannot get any connection to Amazon S3 buckets while creating a Lambda function. Creating a new blank function in ...
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0 votes
1 answer
236 views

Compiling and running untrusted code on a server

In teaching CS, students submit their code to our server and we compile and run with unit tests. Similar to Codeforces, Codewars, and HackerRank. How should we be configuring servers for this? Launch ...
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2 votes
2 answers
1k views

AWS Lambda automatically use latest layer

We have a server-less stack that relies on multiple AWS Lambdas to perform tasks. To help make code re-usable we have multiple Lambda Layers shared across the Lambdas. Our issue is, when we make a ...
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1 vote
0 answers
65 views

Serverless Lambda infrastructure for listening to Websocket

I'm still new in the AWS Lambda & Api Gateway world, but it seems a good fit to my new project. I still have some concerns, and I'll be very happy if you can assist. In my new project (Financial ...
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0 votes
2 answers
48 views

Using AWS lambda or Google Functions to run the a large number of parallel instances of the same script with different arguments [closed]

I have a script for collecting data for different social media hashtags. The script currently makes a bunch of sequential HTTP requests, formats the data into a Pandas data frame, and saves it to a ...
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1 vote
0 answers
55 views

AWS data storage: how much to store with Cognito

I am new here. This is rather a choice-based question rather than purely technical one. Many mobile apps authenticate with Cognito, and I am going to use the same for ease of use + free tier ...
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2 votes
1 answer
401 views

How can I get AWS cloudwatch logs into GCP stack driver logs viewer?

I have set up the "connector account" thing in Stackdriver, and I'm able to see metrics in GCP, which is super cool! I would now like to also get all cloudwatch logs into google's logging tool. Can ...
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1 vote
1 answer
37 views

How does AWS Lambda pass logs to CloudWatch Logs?

AWS somehow aggregate stdout and stderr of a lambda. I once bumped to a situation where a subthread of a lambda process stopped logging in the middle(using async technology was such a bad idea). I'm ...
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1 vote
1 answer
2k views

Why can't my AWS Lambda connect to my AWS RDS proxy?

I can connect to my database locally just fine (of course with the normal DB endpoint, not the proxy endpoint). However, I just can't seem to get my lambda function to connect to the same database ...
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1 vote
1 answer
485 views

AWS API Gateway to Fargate, only charge when request is running

From the following link, it seems possible to call a Fargate task from the API Gateway: https://aws.amazon.com/blogs/compute/introducing-amazon-api-gateway-private-endpoints/ But, does the task have ...
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2 votes
1 answer
660 views

Is DynamoDB latency almost the same as RDS latency?

I am exploring using AWS Lambda through Laravel Vapor. Avoiding the use of Redis can save us ~$56/mo (t2.small at ~$24, NAT Gateway at ~$32). Instead of Redis, I plan to use DynamoDB which is much ...
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2 votes
2 answers
455 views

Trigger AWS Lambda by S3 object GET

My Problem I have a public S3 bucket which serves as a storage solution for large files (GBs) that I send to colleagues and clients. The files are auto-deleted after a few weeks. The problem with ...
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1 answer
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How to decrypt Secure String values in Parameter Store using .NET Core's AmazonSimpleSystemsManagementClient

I have the following code in a Lambda function: var ssmConfig = new AmazonSimpleSystemsManagementConfig { RegionEndpoint = RegionEndpoint.APSoutheast2 }; ...
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Can't connect to a public accessible AWS RDS

I was running a serverless web application on a lambda inside a VPC, and connecting to a Aurora-MySQL RDS instance, with inbound rules to allow traffic from the security group of the lambda The ...
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5 votes
2 answers
336 views

How to choose between Elastic Container Service (ECS) or Elastic Container Registry (ECR), Elastic Beanstalk, and Lambda?

Background: I've worked with EC2 and RDS. Recently I received a query from a client in which he wants to develop both mobile and web applications using Amazon Web Services, and need advice on which ...
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1 vote
1 answer
1k views

using an aws lambda as a node webserver

I have heard of people using AWS lambdas as a place to run node express webservers which to my mind is an awful idea for the following reasons: it is hard to run them in a similar state locally This ...
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2 votes
1 answer
102 views

Using Lambda functions to create a REST API

We have a web app that is powered by an API made up of AWS Lambda functions. For the API, we have three environments (prod, staging, and demo). We were developing the functions using serverless-...
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