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Greg Swallow

Hi all! I am brand new to serverless and I'm jumping in as a pretty dense "sysadmin" type. When I run serverless deploy... on a stack I just cloned, it creates an AWS::ApiGateway::Deployment resource whose name changes each time serverless deploy is run:

    ApiGatewayDeployment1622610163204: {
      "Type": "AWS::ApiGateway::Deployment",
      Properties: {
        RestApiId: {
          Ref: ApiGatewayRestApi
        StageName: dev
      DependsOn: [

Problem is I have an AWS::WAFv2::WebAclAssociation resource that's created with static cloudformation and it fails with a WAFNonexistentItemException error (https://docs.aws.amazon.com/waf/latest/APIReference/API_AssociateWebACL.html):

    Type: AWS::WAFv2::WebACLAssociation
      ResourceArn: !Join
        - ""
        - - "arn:aws:apigateway:${opt:region, self:provider.region}::/restapis/"
          - !Ref ApiGatewayRestApi
          - "/stages/${self:provider.stage}"
      WebACLArn: !GetAtt WafWebACL.Arn
The stage doesn't exist until the AWS::ApiGateway::Deployment resource exists, so I assume I need to DependsOn that resource but its name changes. Is there a variable I should be looking for as part of a plugin that I can use?
Greg Swallow
I think the answer is ${sls:instanceId}
Ben Collier
Hi all - having an issue with deployment of a few of our lambdas. AWS is complaining that it can't find the relevant shared object files (.so) - we've tried turning off "slim" and also specifying the .so files in the DockerExtraFiles parameter, but none of these seem to work. Has anyone else experienced this, and is there anything obvious we may be doing wrong. These lambdas all work absolutely fine locally.
Aditya Agarwal

Hello all, I am writing a lambda authoriser and want to use context.identity.sourceIp, method.request.headers.Authorization as identitySource. When I deploy the application to AWS, the authorizer is set up correctly and things are working fine.

But when I run my code locally (I am using serverless-offline), I get the error Serverless Offline only supports retrieving tokens from the headers (λ: my-auth). Here is the complete code:

    handler: handlers/auth.auth
    vpc: ${self:custom.vpc}
    handler: handlers/lambda-trigger.lambdaTrigger
    timeout: 10
      - http:
          method: post
          path: /lambda-trigger
          cors: true
            name: auth
            type: REQUEST
            identitySource: method.request.header.Authorization, context.identity.sourceIp
            resultTtlInSeconds: 0
Aleksei Tcelishchev

Hi all - having an issue with deployment of a few of our lambdas. AWS is complaining that it can't find the relevant shared object files (.so) - we've tried turning off "slim" and also specifying the .so files in the DockerExtraFiles parameter, but none of these seem to work. Has anyone else experienced this, and is there anything obvious we may be doing wrong. These lambdas all work absolutely fine locally.

if you're packing locally then you have to use same type of distro for docker image to build packages at as lambda env looks like so use f.e. public.ecr.aws/lambda/python:3.8 or ec2 instance with amazon linux
also using layers is highly recommended for this

mr. Romeijn
Hello, I have a question regarding AWS Lambda event config. I've made a Lambda with an onSuccess handler which works fine when using the Event invocation type. I want to add a http api event but obviously this does not invoke the associated function with the Event invocation type. Is this possible to configure? Could not find anything regarding this in the docs
Trevor Marburger
Hello - the serverless docs mention that all GCP Cloud Function event types are supported, but I am only seeing HTTP & PubSub examples in the documentation. Has anyone successfully deployed a GCF with a Cloud Storage object.finalize trigger?
Trevor Marburger

@ambhojgoyal - did you ever find a solution to this? If so, what is it - I am running into the same limitation

What will be the event type for google cloud storage like pub/sub has :"providers/cloud.pubsub/eventTypes/topic.publish" ?


Hi all, I'm developing a serverless plugin and my use-case requires me to automatically add resources to the serverless configuration BEFORE variable resolution happens. I used to accomplish this by adding those resources in the plugins constructor by modifying this.serverless.service.resources but this no longer works since serverless 2.46.0

Is there a more appropriate way to add auto-generated resources to serverless prior to variable resolution? Or alternatively is there a way to manually call variable resolution on an autogenerated resource?
I'm facing this challenge because my plugin auto-generates resources from static files in the repository that contain serverless variables, but aren't directly referenced in serverless.yaml

Gareth McCumskey
@ubaniabalogun I would recommend asking the question as an issue in the GitHub project. That way the team and community who work on the framework can answer that and maybe make sure that the process you used to use is catered for in the new way of doing things
Muse Mekuria
Hi folks, I'm looking for a way to clean up serverless resources via lambda... is it possible at all to call serverless remove or something that produces the same effect from a lambda?
Gareth McCumskey
@sumew serverless remove does a few things but the biggest is to instruct CloudFormation to delete a stack. Perhaps look into the SDK documentation around the CloudFormation service to do that
Crystal R Williams
Hi, any time I run "sls deploy -v" I'm receiving the error "Error: Profile ___ does not exist". I've already tried a few things like running serverless config credentials with the correct profile that I want to use but it's still telling me profile doesn't exist with a different profile.
Gareth McCumskey
@CORT0619 Do you have a property called profile in your serverless.yml? The profile refers to an AWS connection profile stored in your ~/.aws/credentials file. If you do not have that file and you are referencing a profile in your serverless.yml you will see that message
Crystal R Williams
Yes, i added that after looking online and it does reference a named profile in my credentials file.
Crystal R Williams
@garethmcc do you know if it's possible to verify serverless is referencing the credentials file? i'm just at a loss because a few months ago I had no issue with this.
Gareth McCumskey
If you have a profile property it is referencing the profile in that credentials file
Aditya Avanth
Hi All,
I'm trying to enable cors on an AWS apigateway which is using lambda-proxy integration. The documentation says we can pass multiple origins to cors configuration (https://www.serverless.com/framework/docs/providers/aws/events/apigateway/#enabling-cors) , but when I check the integration response for OPTIONS method, The "Access-control-allow-origin" is only showing 1 origin. So, the api is failing when I'm firing the request from another origin. How to fix this? Any solutions Please?
Md. Aminul Islam Sarker

I am getting the following error. Is there any idea about it? Anyone?

cmdlet Select-String at command pipeline position 1
Supply values for the following parameters:
Select-String : Cannot bind argument to parameter 'Path' because it is an empty array.
At line:1 char:1

  • sls deploy
  • ~~
    • CategoryInfo : InvalidData: (:) [Select-String], ParameterBindingValidationException
    • FullyQualifiedErrorId : ParameterArgumentValidationErrorEmptyArrayNotAllowed,Microsoft.PowerShell.Commands.SelectStringCommand
I was running sls deploy command
I am trying to use https://nestjs.com/ in AWS serverless. So can you send me a working example?
I am not getting ssm value back on the lambda. Any idea? serverless/serverless#9676
Hey People, I'm unable to find examples of Azure Java functions using serverless, is it supported?
Diego Rainero
Hi all.
I can't find no documentation about timestream and serverless
is there some way to manage timestream? is it supported?
Daniel Craig
How can I upload a file to an s3 bucket at time of deploy?
Hello all,
node_modules aren't getting generated when i use serverless package any ideas?

Hello Everyone,

I have recently come across container support for lambda. To my knowledge, I know that serverless framework packages/zips the code and uploads to aws. Does anyone know if serverless framework supports this container workflow ?

By container workflow I mean: When we do serverless deploy:

  • Builds docker images corresponding to the lambda functions
    • Upload to ECR
    • Create or update lambda function to use the newly uploaded container image.

Thanks in advance.

what is the maximum timeout for serverless?
i put timeout: 60 but the gateway maximum seems to be 30?
@6ewis , I believe various resources have various timeouts. functions have 15, gateway has 30.
Does anyone know the implications on cost -- with a timeout of 60s?
  name: aws
  runtime: nodejs14.x
  stage: prod
  region: us-east-1
  timeout: 60
    lambda: true

Unable to find the reference to layer in resource section, especially when we enable the provisionedConcurrency or functionVersion set to true.

if we remove both provisionedConcurrency or functionVersion in serverless script, same code is working fine without any issues

  name: rtn
  name: aws
  region: us-west-2
  stackName: rtn-sls
    name: ${self:custom.S3BucketName.${opt:stage}}
    maxPreviousDeploymentArtifacts: 10
  deploymentPrefix: rtn/deployment
  runtime: nodejs12.x
  memorySize: 256
  timeout: 300

  # Lambda Configuration
  versionFunctions: false # Lambda Versioning

  # X-Ray Configuration
    lambda: true

  params: ${file(./env/${opt:stage}/parameters.json)}
  version: ${self:custom.params.Version}
  LayerVersion: ${self:custom.params.LayerVersion}
  s3Key: "https://s3.amazonaws.com/${self:custom.S3BucketName.${opt:stage}}/rtn-business-service/${self:custom.version}"

    devint: rtn-devint
    prod: rtn

  individually: true

    name: "rtn-api-router"
    handler: rtn-api-router.handler
      - !Ref rtnLayer
      artifact: "${self:custom.s3Key}/rtn-api-router-v${self:custom.version}.zip"
    provisionedConcurrency: 1

  - Resources:
        Type: AWS::Lambda::LayerVersion
            - nodejs12.x
            S3Bucket: ${self:custom.S3BucketName.${opt:stage}}
            S3Key: common-nodejs-lambda-layer/common-nodejs-lib-v${self:custom.LayerVersion}.zip
          LayerName: rtn-layer

Getting below error

Serverless Error ----------------------------------------

  ServerlessError: Could not find reference to layer: rtnLayer. Ensure that you are referencing layer defined in your service.
      at /Users/naveen/rtn-api-router/node_modules/serverless/lib/plugins/aws/package/compile/functions.js:739:15
      at Array.forEach (<anonymous>)
      at extractLayerConfigurationsFromFunction (/Users/naveen/rtn-api-router/node_modules/serverless/lib/plugins/aws/package/compile/functions.js:735:29)
      at AwsCompileFunctions.compileFunction (/Users/naveen/rtn-api-router/node_modules/serverless/lib/plugins/aws/package/compile/functions.js:458:9)
      at /Users/naveen/rtn-api-router/node_modules/serverless/lib/plugins/aws/package/compile/functions.js:680:64
      at Array.map (<anonymous>)
      at AwsCompileFunctions.compileFunctions (/Users/naveen/rtn-api-router/node_modules/serverless/lib/plugins/aws/package/compile/functions.js:680:37)
      at AwsCompileFunctions.tryCatcher (/Users/naveen/rtn-api-router/node_modules/bluebird/js/release/util.js:16:23)
      at Promise._settlePromiseFromHandler (/Users/naveen/rtn-api-router/node_modules/bluebird/js/release/promise.js:547:31)
      at Promise._settlePromise (/Users/naveen/rtn-api-router/node_modules/bluebird/js/release/promise.js:604:18)
      at Promise._settlePromise0 (/Users/naveen/rtn-api-router/node_modules/bluebird/js/release/promise.js:649:10)
      at Promise._settlePromises (/Users/naveen/rtn-api-router/node_modules/bluebird/js/release/promise.js:729:18)
      at _drainQueueStep (/Users/naveen/rtn-api-router/node_modules/bluebird/js/release/async.js:93:12)
      at _drainQueue (/Users/naveen/rtn-api-router/node_modules/bluebird/js/release/async.js:86:9)
      at Async._drainQueues (/Users/naveen/rtn-api-router/node_modules/bluebird/js/release/async.js:102:5)
      at Immediate.Async.drainQueues (/Users/naveen/rtn-api-router/node_modules/bluebird/js/release/async.js:15:14)
      at processImmediate (internal/timers.js:456:21)

Hi all. Any serverless experts out there open to some contract work?
My startup is requiring a 3 months+ contract laying down some initial architecture and implemention in node. Fully serverless stack on AWS.
Details here:

Pm for more details
Many thanks

Akshay Kumar
Hi! I am trying to setup a few lambda functions with integration:lambda. When I do this, whatever I return from lambda gets returned as body.
Before using the integration:lambda in serverless.yml, I was using mitty to take care of cors. Does this mean that I have to pass cors related configuration in serverless.yml instead?
I have something like return { statusCode: 200, body: JSON.stringify("") } in the handler. When I inspect the response I get { statusCode: 200, body: "" } as the body of the response for the request.
I tried to go through the docs related to API Gateway Events. but I was not able to figure out how to setup functions using path and query parameters. So I switched to integration: lambda, as in this case the path and query parameters are probably automatically parsed as object and return as properties of event. But this messed up the response returned by the handlers.
Akshay Kumar
Can someone point me to a sample with integration:lambda showing the serverless.yml and the handler code?
Akshay Kumar
Hi all, i am new to serverless with azure and not able to find any docs for armTemplate use method in serverless.yaml
Can someone point me to any documentation they know about?
Hi, is there anyway we can change lambda provisionedConcurrency based on cron schedule. Like AWS::ApplicationAutoScaling::ScalableTarget in SAM
Greg Swallow
I wrote a cloudformation template. Serverless insists on reading the contents of a multi-line string and pullling variables out of it.
Greg Swallow
seriously is there no concept of a here document in serverless?
Greg Swallow
Is this thing dead?
Gareth McCumskey
@gswallow Could you clarify what you mean by a here document?